fix artifacts

Bump dependencies

.all-contributorsrc

@@ -0,0 +1,342 @@
+{
+  "projectName": "diff2html",
+  "projectOwner": "rtfpessoa",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": true,
+  "commitConvention": "none",
+  "contributors": [
+    {
+      "login": "rtfpessoa",
+      "name": "Rodrigo Fernandes",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/902384?v=4",
+      "profile": "https://rtfpessoa.xyz",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "stockmind",
+      "name": "stockmind",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/5653847?v=4",
+      "profile": "https://github.com/stockmind",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "lantian",
+      "name": "Ivan Vorontsov",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/535545?v=4",
+      "profile": "https://github.com/lantian",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "brewern",
+      "name": "Nick Brewer",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/129300?v=4",
+      "profile": "http://www.nick-brewer.com",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "romellem",
+      "name": "Matt Wade",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/8504000?v=4",
+      "profile": "http://heyitsmattwade.com",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    },
+    {
+      "login": "mrfyda",
+      "name": "Rafael Cortês",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/593860?v=4",
+      "profile": "http://mrfyda.github.io",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "nmatpt",
+      "name": "Nuno Teixeira",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/5034733?v=4",
+      "profile": "https://github.com/nmatpt",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "kaishuu0123",
+      "name": "Koki Oyatsu",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/1567423?v=4",
+      "profile": "https://saino.me/",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    },
+    {
+      "login": "Jameskmonger",
+      "name": "James Monger",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/2037007?v=4",
+      "profile": "http://www.jamesmonger.com",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "wesssel",
+      "name": "Wessel van der Pal",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/7767299?v=4",
+      "profile": "http://wesssel.github.io/",
+      "contributions": [
+        "security",
+        "code"
+      ]
+    },
+    {
+      "login": "jung-kim",
+      "name": "jk-kim",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/5281068?v=4",
+      "profile": "https://jung-kim.github.io",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "sss0791",
+      "name": "Sergey Semenov",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/1446970?v=4",
+      "profile": "https://github.com/sss0791",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    },
+    {
+      "login": "starpit",
+      "name": "Nick Mitchell",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/4741620?v=4",
+      "profile": "http://researcher.watson.ibm.com/researcher/view.php?person=us-nickm",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    },
+    {
+      "login": "samiraguiar",
+      "name": "Samir Aguiar",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/13439135?v=4",
+      "profile": "https://github.com/samiraguiar",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "pubkey",
+      "name": "pubkey",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/8926560?v=4",
+      "profile": "https://twitter.com/pubkeypubkey",
+      "contributions": [
+        "doc",
+        "code"
+      ]
+    },
+    {
+      "login": "iliyaZelenko",
+      "name": "Илья",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/13103045?v=4",
+      "profile": "https://github.com/iliyaZelenko",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "mohd-akram",
+      "name": "Mohamed Akram",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/1823771?v=4",
+      "profile": "https://akr.am",
+      "contributions": [
+        "bug",
+        "doc",
+        "code"
+      ]
+    },
+    {
+      "login": "emarcotte",
+      "name": "Eugene Marcotte",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/249390?v=4",
+      "profile": "https://github.com/emarcotte",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "dsabanin",
+      "name": "Dima Sabanin",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/8316?v=4",
+      "profile": "http://twitter.com/dimasabanin",
+      "contributions": [
+        "maintenance",
+        "code"
+      ]
+    },
+    {
+      "login": "benabbottnz",
+      "name": "Ben Abbott",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/2616473?v=4",
+      "profile": "https://github.com/benabbottnz",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "dickeylth",
+      "name": "弘树@阿里",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/2196373?v=4",
+      "profile": "http://webminer.js.org",
+      "contributions": [
+        "bug",
+        "doc"
+      ]
+    },
+    {
+      "login": "Rantanen",
+      "name": "Mikko Rantanen",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/385385?v=4",
+      "profile": "https://github.com/Rantanen",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "extend1994",
+      "name": "Ann",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/13430892?v=4",
+      "profile": "https://github.com/extend1994",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "escitalopram",
+      "name": "escitalopram",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/1155220?v=4",
+      "profile": "https://github.com/escitalopram",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "dependabot[bot]",
+      "name": "dependabot[bot]",
+      "avatar_url": "https://avatars0.githubusercontent.com/in/29110?v=4",
+      "profile": "https://github.com/apps/dependabot",
+      "contributions": [
+        "security",
+        "maintenance"
+      ]
+    },
+    {
+      "login": "JoshuaKGoldberg",
+      "name": "Josh Goldberg",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/3335181?v=4",
+      "profile": "http://www.joshuakgoldberg.com",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "apeckham",
+      "name": "Aaron",
+      "avatar_url": "https://avatars.githubusercontent.com/u/14110?v=4",
+      "profile": "https://github.com/apeckham",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "pgrimaud",
+      "name": "Pierre Grimaud",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1866496?v=4",
+      "profile": "https://github.com/pgrimaud",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "domdomegg",
+      "name": "Adam Jones",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4953590?v=4",
+      "profile": "https://domdomegg.github.io/",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "charguer",
+      "name": "Arthur Charguéraud",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1830652?v=4",
+      "profile": "https://github.com/charguer",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "Pierrci",
+      "name": "Pierric Cistac",
+      "avatar_url": "https://avatars.githubusercontent.com/u/5020707?v=4",
+      "profile": "https://twitter.com/pierrci",
+      "contributions": [
+        "doc",
+        "code"
+      ]
+    },
+    {
+      "login": "xlith",
+      "name": "Civan Yavuzşen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/510560?v=4",
+      "profile": "https://github.com/xlith",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "timgates42",
+      "name": "Tim Gates",
+      "avatar_url": "https://avatars.githubusercontent.com/u/47873678?v=4",
+      "profile": "https://github.com/timgates42",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "campersau",
+      "name": "campersau",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4009570?v=4",
+      "profile": "https://github.com/campersau",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "dependabot-preview[bot]",
+      "name": "dependabot-preview[bot]",
+      "avatar_url": "https://avatars.githubusercontent.com/in/2141?v=4",
+      "profile": "https://github.com/apps/dependabot-preview",
+      "contributions": [
+        "code"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7
+}

.editorconfig

@@ -0,0 +1,16 @@
+# This file is for unifying the coding style for different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+max_line_length = 120
+
+[Makefile]
+indent_style = tab

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,44 @@
+### Step -1: Before filling an issue check out troubleshooting section
+
+- Go to [README.md#Troubleshooting](https://github.com/rtfpessoa/diff2html#troubleshooting)
+
+### Step 0: Describe your environment
+
+- OS: **\_**
+- diff2html version: **\_**
+- Using diff2html directly or using diff2html-ui helper: **\_**
+- Extra flags: **\_**
+
+### Step 1: Describe the problem:
+
+#### Steps to reproduce:
+
+1. ***
+2. ***
+3. ***
+
+#### diff example:
+
+```diff
+diff --git describe.c
+index fabadb8,cc95eb0..4866510
+--- a/describe.c
++++ b/describe.c
+@@@ -98,20 -98,12 +98,20 @@@
+   return (a_date > b_date) ? -1 : (a_date == b_date) ? 0 : 1;
+ }
+```
+
+#### Observed Results:
+
+- What happened? This could be a description, log output, etc.
+
+#### Expected Results:
+
+- What did you expect to happen?
+
+#### Relevant Code:
+
+```
+// TODO(you): code here to reproduce the problem
+```

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+
+name: Bug report about: Create a report to help us improve title: "" labels: "" assignees: "" ---**Describe the bug** A
+clear and concise description of what the bug is.
+
+**To Reproduce** Steps to reproduce the behavior:
+
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior** A clear and concise description of what you expected to happen.
+
+**Screenshots** If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+
+- OS: [e.g. Windows, Linux, Mac]
+- Browser [e.g. Firefox, Chrome, Safari]
+- Version [e.g. 22]
+
+**Additional context** Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,12 @@
+---
+
+name: Feature request about: Suggest an idea for this project title: "" labels: "" assignees: "" ---**Is your feature
+request related to a problem? Please describe.** A clear and concise description of what the problem is. Ex. I'm always
+frustrated when [...]
+
+**Describe the solution you'd like** A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered** A clear and concise description of any alternative solutions or features
+you've considered.
+
+**Additional context** Add any other context or screenshots about the feature request here.

.github/workflows/ci.yml

@@ -0,0 +1,12 @@
+name: ci
+
+on:
+  pull_request:
+    branches: [master]
+
+jobs:
+  test-and-publish:
+    uses: ./.github/workflows/test-and-publish.yml
+    with:
+      environment: dev
+    secrets: inherit

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+name: release
+
+on:
+  push:
+    branches: [master]
+
+jobs:
+  test-and-publish:
+    uses: ./.github/workflows/test-and-publish.yml
+    with:
+      environment: production
+    secrets: inherit
+
+  publish-website:
+    runs-on: ubuntu-latest
+    container:
+      image: amazon/aws-cli
+    needs: [test-and-publish]
+    environment: 'production'
+    steps:
+      - name: Download docs
+        uses: actions/download-artifact@v4
+        with:
+          name: docs
+          path: docs/
+      - name: Publish to S3
+        working-directory: docs
+        env:
+          AWS_CF_DISTRIBUTION_ID: ${{ secrets.AWS_CF_DISTRIBUTION_ID }}
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
+        run: |
+          aws s3 sync --region eu-west-1 --delete . s3://diff2html.xyz --metadata-directive REPLACE --cache-control max-age=31557600
+          aws cloudfront create-invalidation --region eu-west-1 --distribution-id $AWS_CF_DISTRIBUTION_ID --paths /index.html /demo.html /sitemap.xml /robots.txt

.github/workflows/test-and-publish.yml

@@ -0,0 +1,148 @@
+name: test-and-publish
+
+on:
+  workflow_call:
+    inputs:
+      environment:
+        required: true
+        type: string
+
+jobs:
+  version:
+    runs-on: ubuntu-latest
+    container:
+      image: codacy/git-version
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Fix tar access
+        run: apk add --update --no-progress tar
+      - name: Fix git access
+        run: |
+          git config --global --add safe.directory /__w/diff2html/diff2html
+      - name: Get next version
+        run: |
+          export NEXT_VERSION="$(/bin/git-version --folder=$PWD --release-branch=master)"
+          echo "Next version is ${NEXT_VERSION}"
+          echo "${NEXT_VERSION}" > next-version.txt
+          echo "version=${NEXT_VERSION}" >> $GITHUB_ENV
+      - name: Get next npm tag name
+        run: |
+          if [ "${GITHUB_REF_NAME}" = "master" ]; then
+            export PUBLISH_TAG="latest"
+          elif [ "${GITHUB_REF_NAME}" = "next" ]; then
+            export PUBLISH_TAG="next"
+          else
+            export PUBLISH_TAG="pr"
+          fi
+          echo "Next tag is ${PUBLISH_TAG}"
+          echo "${PUBLISH_TAG}" > publish-tag.txt
+      - name: Upload versions
+        uses: actions/upload-artifact@v4
+        with:
+          name: versions
+          if-no-files-found: error
+          path: |
+            next-version.txt
+            publish-tag.txt
+
+  build:
+    runs-on: ubuntu-latest
+    needs: [version]
+    strategy:
+      matrix:
+        node-version: [16.x, 18.x, 20.x, 22.x]
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+      - name: Log environment setup
+        run: |
+          node -v
+          npm -v
+      - name: Install dependencies
+        run: npm install
+      - name: Build templates
+        run: npm run build:templates
+      - name: Build library
+        run: npm run build
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: [build]
+    environment: ${{ inputs.environment }}
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Download versions
+        uses: actions/download-artifact@v4
+        with:
+          name: versions
+      - name: Store version
+        run: echo "version=$(cat next-version.txt)" >> $GITHUB_ENV
+      - name: Configure Git
+        run: |
+          git config user.email "gh-actions@users.noreply.github.com"
+          git config user.name "GitHub Actions"
+      - name: Tag commit
+        uses: tvdias/github-tagger@v0.0.1
+        with:
+          repo-token: '${{ secrets.GITHUB_TOKEN }}'
+          tag: '${{ env.version }}'
+      - name: Install dependencies
+        run: npm install
+      - uses: actions/setup-node@v3
+        with:
+          registry-url: 'https://registry.npmjs.org'
+          node-version: '22.x'
+      - name: Configure NPM version
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          rm -f .npmrc
+          touch .npmrc
+          echo "//registry.npmjs.org/:_authToken=${NODE_AUTH_TOKEN}" >> .npmrc
+          echo "registry=https://registry.npmjs.org/" >> .npmrc
+          echo "access=public" >> .npmrc
+          echo "save-exact=true" >> .npmrc
+      - name: Version package
+        run: |
+          # Update version in packages to publish
+          npm version $(cat next-version.txt) -m "Release version %s"
+      - name: Publish to NPM
+        run: npm publish --tag $(cat publish-tag.txt)
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '22.x'
+          registry-url: 'https://npm.pkg.github.com'
+      - name: Configure NPM version
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          rm -f .npmrc
+          touch .npmrc
+          echo "//npm.pkg.github.com/:_authToken=${NODE_AUTH_TOKEN}" >> .npmrc
+          echo "@rtfpessoa:registry=https://npm.pkg.github.com/" >> .npmrc
+          echo "access=public" >> .npmrc
+          echo "save-exact=true" >> .npmrc
+      - name: Publish to GPR
+        run: |
+          # HACK: Override npm package name to be able to publish in GitHub
+          sed -i 's/^  "name":.*/  "name": "@rtfpessoa\/diff2html",/g' package.json
+          echo "Going to publish version $(cat next-version.txt) to GitHub"
+          npm publish --tag $(cat publish-tag.txt)
+          # HACK: Restore npm package name
+          sed -i 's/^  "name":.*/  "name": "diff2html",/g' package.json
+      - name: Upload docs
+        uses: actions/upload-artifact@v4
+        with:
+          name: docs
+          if-no-files-found: error
+          path: docs/

.gitignore

@@ -18,6 +18,29 @@ target/
 # Node
 node_modules/
 npm-debug.log
+yarn-error.log
+
+# Coverage
+coverage/
 
 # Bower
 bower_components/
+
+# Terraform
+/terraform/.terraform
+
+# Compiled templates
+/src/diff2html-templates.*
+
+# Compiled website
+/docs/
+
+# Bundles temporary typescript files compiled by webpack
+/bundles-out/
+
+# Web bundles
+/bundles/
+# CommonJS library
+/lib/
+# ESNext library
+/lib-esm/

.husky/.gitignore

@@ -0,0 +1 @@
+_

.husky/pre-commit

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+npm run lint:staged

.prettierrc.json

@@ -0,0 +1,16 @@
+{
+  "arrowParens": "avoid",
+  "bracketSpacing": true,
+  "htmlWhitespaceSensitivity": "css",
+  "insertPragma": false,
+  "jsxSingleQuote": false,
+  "printWidth": 120,
+  "proseWrap": "always",
+  "quoteProps": "as-needed",
+  "requirePragma": false,
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "all",
+  "useTabs": false
+}

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "typescript.tsdk": "node_modules/typescript/lib"
+}

CNAME

@@ -0,0 +1 @@
+diff2html.xyz

CODE_OF_CONDUCT.md

@@ -0,0 +1,61 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making
+participation in our project and our community a harassment-free experience for everyone, regardless of age, body size,
+disability, ethnicity, sex characteristics, gender identity and expression, level of experience, education,
+socio-economic status, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery and unwelcome sexual attention or advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take
+appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits,
+issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any
+contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the
+project or its community. Examples of representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed representative at an online or offline
+event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at
+rtfrodrigo [at] gmail [dot] com. All complaints will be reviewed and investigated and will result in a response that is
+deemed necessary and appropriate to the circumstances. The project team is obligated to maintain confidentiality with
+regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent
+repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at
+https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see https://www.contributor-covenant.org/faq

CONTRIBUTING.md

@@ -0,0 +1,61 @@
+## How to contribute to diff2html
+
+### Main rules
+
+- Before you open a ticket or send a pull request, [search](https://github.com/rtfpessoa/diff2html/issues) for previous
+  discussions about the same feature or issue. Add to the earlier ticket if you find one.
+
+- If you're proposing a new feature, make sure you create an issue to let other contributors know what you are working
+  on.
+
+- Before sending a pull request make sure your code is tested.
+
+- Before sending a pull request for a feature, be sure to run tests with `npm run test`.
+
+- Use the same coding style as the rest of the codebase, most of the check can be performed with `npm run run lint`.
+
+- Use `git rebase` (not `git merge`) to sync your work from time to time with the master branch.
+
+- After creating your pull request make sure the build is passing on
+  [CircleCI](https://circleci.com/gh/rtfpessoa/diff2html) and that [Codacy](https://www.codacy.com/app/Codacy/diff2html)
+  is also confident in the code quality.
+
+- In your pull request, do not commit the `dist` or `build` folder if you needed to build the release files.
+
+### Commit Style
+
+Writing good commit logs is important. A commit log should describe what changed and why. Follow these guidelines when
+writing one:
+
+1. The first line should be 50 characters or less and contain a short description of the change prefixed with the name
+   of the changed subsystem (e.g. "net: add localAddress and localPort to Socket").
+2. Keep the second line blank.
+3. Wrap all other lines at 72 columns.
+
+A good commit log can look something like this:
+
+```
+subsystem: explaining the commit in one line
+
+Body of commit message is a few lines of text, explaining things
+in more detail, possibly giving some background about the issue
+being fixed, etc. etc.
+
+The body of the commit message can be several paragraphs, and
+please do proper word-wrap and keep columns shorter than about
+72 characters or so. That way `git log` will show things
+nicely even when it is indented.
+```
+
+### Developer's Certificate of Origin 1.0
+
+By making a contribution to this project, I certify that:
+
+- (a) The contribution was created in whole or in part by me and I have the right to submit it under the open source
+  license indicated in the file; or
+- (b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate
+  open source license and I have the right under that license to submit that work with modifications, whether created in
+  whole or in part by me, under the same open source license (unless I am permitted to submit under a different
+  license), as indicated in the file; or
+- (c) The contribution was provided directly to me by some other person who certified (a), (b) or (c) and I have not
+  modified it.

CREDITS.md

@@ -0,0 +1,26 @@
+# Credits
+
+This is the list of all the kind people that have contributed to the diff2html project. This list is ordered by first
+contribution.
+
+Thanks, @rtfpessoa
+
+---
+
+Rodrigo Fernandes, [@rtfpessoa](https://github.com/rtfpessoa)
+
+JK Kim, [@codingtwinky](https://github.com/codingtwinky)
+
+Paulo Bu, [@pbu88](https://github.com/pbu88)
+
+Nuno Teixeira, [@nmatpt](https://github.com/nmatpt)
+
+Mikko Rantanen, [@Rantanen](https://github.com/Rantanen)
+
+Wolfgang Illmeyer, [@escitalopram](https://github.com/escitalopram)
+
+Jameskmonger, [@Jameskmonger](https://github.com/Jameskmonger)
+
+Rafael Cortês, [@mrfyda](https://github.com/mrfyda)
+
+Ivan Vorontsov, [@lantian](https://github.com/lantian)

LICENSE

@@ -1,20 +0,0 @@
-Copyright 2014 Rodrigo Fernandes https://rtfpessoa.github.io/
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LICENSE.md

@@ -0,0 +1,14 @@
+Copyright 2014-2016 Rodrigo Fernandes https://rtfpessoa.github.io/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -1,114 +1,613 @@
-# Diff to Html by [rtfpessoa](https://github.com/rtfpessoa)
+# diff2html
 
-Diff to Html generates pretty HTML diffs from git diff output.
+[![npm](https://img.shields.io/npm/v/diff2html)](https://www.npmjs.com/package/diff2html)
+[![node](https://img.shields.io/node/v/diff2html)](https://www.npmjs.com/package/diff2html)
+[![npm](https://img.shields.io/npm/l/diff2html)](https://www.npmjs.com/package/diff2html)
+[![GitHub Actions](https://github.com/rtfpessoa/diff2html/actions/workflows/release.yml/badge.svg)](https://github.com/rtfpessoa/diff2html/actions/workflows/release.yml)
+
+[![npm weekly downloads](https://img.shields.io/npm/dw/diff2html)](https://www.npmjs.com/package/diff2html)
+[![npm monthly downloads](https://img.shields.io/npm/dm/diff2html)](https://www.npmjs.com/package/diff2html)
+[![npm yearly downloads](https://img.shields.io/npm/dy/diff2html)](https://www.npmjs.com/package/diff2html)
+[![npm downloads](https://img.shields.io/npm/dt/diff2html)](https://www.npmjs.com/package/diff2html)
+
+[![jsdelivr CDN Downloads](https://data.jsdelivr.com/v1/package/npm/diff2html/badge)](https://www.jsdelivr.com/package/npm/diff2html)
+[![All Contributors](https://img.shields.io/badge/all_contributors-22-orange)](#contributors)
+
+diff2html generates pretty HTML diffs from git diff or unified diff output.
+
+## Table of Contents
+
+<!-- toc -->
+
+- [Features](#features)
+- [Online Example](#online-example)
+- [Distributions](#distributions)
+- [Usage](#usage)
+- [Diff Text Input](#diff-text-input)
+- [Diff2HtmlUI Usage](#diff2htmlui-usage)
+  - [Diff2HtmlUI API](#diff2htmlui-api)
+  - [Diff2HtmlUI Configuration](#diff2htmlui-configuration)
+  - [Diff2HtmlUI Browser](#diff2htmlui-browser)
+  - [Diff2HtmlUI Examples](#diff2htmlui-examples)
+- [Diff2Html Usage](#diff2html-usage)
+  - [Diff2Html API](#diff2html-api)
+  - [Diff2Html Configuration](#diff2html-configuration)
+  - [Diff2Html Browser](#diff2html-browser)
+  - [Diff2Html NPM / Node.js Library](#diff2html-npm--nodejs-library)
+  - [Diff2Html Examples](#diff2html-examples)
+- [Troubleshooting](#troubleshooting)
+  - [1. Out of memory or Slow execution](#1-out-of-memory-or-slow-execution)
+- [Contribute](#contribute)
+- [Contributors](#contributors)
+- [License](#license)
+- [Thanks](#thanks)
+
+<!-- tocstop -->
 
 ## Features
 
-* `line-by-line` and `side-by-side` diff
+- Supports git and unified diffs
 
-* new and old line numbers
+- Line by line and Side by side diff
 
-* inserted and removed lines
+- New and old line numbers
 
-* GitHub like style
+- Inserted and removed lines
 
-* Code syntax highlight
+- GitHub like visual style
+
+- Code syntax highlight
+
+- Line similarity matching
+
+- Easy code selection
 
 ## Online Example
 
-> Go to [Diff2HTML](http://rtfpessoa.github.io/diff2html/)
+> Go to [diff2html](https://diff2html.xyz/demo.html)
 
 ## Distributions
 
-* [WebJar](http://www.webjars.org/)
+- [jsdelivr CDN](https://www.jsdelivr.com/package/npm/diff2html)
+- [WebJar](http://www.webjars.org/)
+- [Node Library](https://www.npmjs.org/package/diff2html)
+- [NPM CLI](https://www.npmjs.org/package/diff2html-cli)
+- Manually use from jsdelivr or build the project:
+  - Browser / Bundle
+    - Parser and HTML Generator
+      - [bundles/js/diff2html.min.js](https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html.min.js) - includes the
+        diff parser and html generator
+    - Wrapper and helper adding syntax highlight, synchronized scroll, and other nice features
+      - [bundles/js/diff2html-ui.min.js](https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js) -
+        includes the wrapper of diff2html with highlight for all `highlight.js` supported languages
+      - [bundles/js/diff2html-ui-slim.min.js](https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui-slim.min.js) -
+        includes the wrapper of diff2html with "the most common" `highlight.js` supported languages
+      - [bundles/js/diff2html-ui-base.min.js](https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui-base.min.js) -
+        includes the wrapper of diff2html without including a `highlight.js` implementation. You can use it without
+        syntax highlight or by passing your own implementation with the languages you prefer
+  - NPM / Node.js library
+    - ES5
+      - [lib/diff2html.js](https://cdn.jsdelivr.net/npm/diff2html/lib/diff2html.js) - includes the diff parser and html
+        generator
+      - [lib/ui/js/diff2html-ui.js](https://cdn.jsdelivr.net/npm/diff2html/lib/ui/js/diff2html-ui.js) - includes the
+        wrapper of diff2html with highlight for all `highlight.js` supported languages
+      - [lib/ui/js/diff2html-ui-slim.js](https://cdn.jsdelivr.net/npm/diff2html/lib/ui/js/diff2html-ui-slim.js) -
+        includes the wrapper of diff2html with "the most common" `highlight.js` supported languages
+      - [lib/ui/js/diff2html-ui-base.js](https://cdn.jsdelivr.net/npm/diff2html/lib/ui/js/diff2html-ui-base.js)
+    - ES6
+      - [lib-esm/diff2html.js](https://cdn.jsdelivr.net/npm/diff2html/lib-esm/diff2html.js) - includes the diff parser
+        and html generator
+      - [lib/ui/js/diff2html-ui.js](https://cdn.jsdelivr.net/npm/diff2html/lib/ui/js/diff2html-ui.js) - includes the
+        wrapper of diff2html with highlight for all `highlight.js` supported languages
+      - [lib/ui/js/diff2html-ui-slim.js](https://cdn.jsdelivr.net/npm/diff2html/lib/ui/js/diff2html-ui-slim.js) -
+        includes the wrapper of diff2html with "the most common" `highlight.js` supported languages
+      - [lib/ui/js/diff2html-ui-base.js](https://cdn.jsdelivr.net/npm/diff2html/lib/ui/js/diff2html-ui-base.js) -
+        includes the wrapper of diff2html without including a `highlight.js` implementation. You can use it without
+        syntax highlight or by passing your own implementation with the languages you prefer
 
-* [Node Module](https://www.npmjs.org/package/diff2html)
+## Usage
 
-* [Bower Package](http://bower.io/search/?q=diff2html)
+Diff2Html can be used in various ways as listed in the [distributions](#distributions) section. The two main ways are:
 
-* [Node CLI](https://www.npmjs.org/package/diff2html-cli)
+- [Diff2HtmlUI](#diff2htmlui-usage): using this wrapper makes it easy to inject the html in the DOM and adds some nice
+  features to the diff, like syntax highlight.
+- [Diff2Html](#diff2html-usage): using the parser and html generator directly from the library gives you complete
+  control about what you can do with the json or html generated.
 
-* Manually download and import `dist/diff2html.min.js` into your page
+Below you can find more details and examples about each option.
 
-## How to use
+## Diff Text Input
 
-> Pretty HTML diff
+diff2html accepts the text contents of a
+[unified diff](https://www.gnu.org/software/diffutils/manual/html_node/Unified-Format.html) or the superset format git
+diff (https://git-scm.com/docs/git-diff) (not combined or word diff). To provide multiples files as input just
+concatenate the diffs (just like the output of git diff).
 
-    Diff2Html.getPrettyHtml(exInput, configuration)
+## Diff2HtmlUI Usage
 
-> Intermediate Json From Git Word Diff Output
+> Simple wrapper to ease simple tasks in the browser such as: code highlight and js effects
 
-    Diff2Html.getJsonFromDiff(exInput)
+- Invoke Diff2html
+- Inject output in DOM element
+- Enable collapsible file summary list
+- Enable syntax highlight of the code in the diffs
 
-> Check out the `index.html` for a complete example.
+### Diff2HtmlUI API
 
-## Configuration
-The HTML output accepts a Javascript object with configuration. Possible options:
+> Create a Diff2HtmlUI instance
 
-  - `inputFormat`: the format of the input data: `'diff'` or `'json'`, default is `'diff'`
-  - `outputFormat`: the format of the output data: `'line-by-line'` or `'side-by-side'`, default is `'line-by-line'`
-  - `showFiles`: show a file list before the diff: `true` or `false`, default is `false`
+```ts
+constructor(target: HTMLElement, diffInput?: string | DiffFile[]) // diff2html-ui, diff2html-ui-slim
+constructor(target: HTMLElement, diffInput?: string | DiffFile[], config: Diff2HtmlUIConfig = {}, hljs?: HighlightJS) // diff2html-ui-base
+```
 
+> Generate and inject in the document the Pretty HTML representation of the diff
 
-## Syntax Highlight
+```ts
+draw(): void
+```
 
-> Add the dependencies.
-Choose one color scheme, and add the main highlight code.
-If your favourite language is not included in the default package also add its javascript highlight file.
+> Enable extra features
+
+```ts
+synchronisedScroll(): void
+fileListToggle(startVisible: boolean): void
+highlightCode(): void
+stickyFileHeaders(): void
+```
+
+### Diff2HtmlUI Configuration
+
+- `synchronisedScroll`: scroll both panes in side-by-side mode: `true` or `false`, default is `true`
+- `highlight`: syntax highlight the code on the diff: `true` or `false`, default is `true`
+- `fileListToggle`: allow the file summary list to be toggled: `true` or `false`, default is `true`
+- `fileListStartVisible`: choose if the file summary list starts visible: `true` or `false`, default is `false`
+- `fileContentToggle`: allow each file contents to be toggled: `true` or `false`, default is `true`
+- `stickyFileHeaders`: make file headers sticky: `true` or `false`, default is `true`
+- [All the options](#diff2html-configuration) from Diff2Html are also valid configurations in Diff2HtmlUI
+
+### Diff2HtmlUI Browser
+
+#### Mandatory HTML resource imports
+
+```html
+<!-- CSS -->
+<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
+
+<!-- Javascripts -->
+<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js"></script>
+```
+
+#### Init
+
+```js
+const targetElement = document.getElementById('destination-elem-id');
+const configuration = { drawFileList: true, matching: 'lines' };
+
+const diff2htmlUi = new Diff2HtmlUI(targetElement, diffString, configuration);
+// or
+const diff2htmlUi = new Diff2HtmlUI(targetElement, diffJson, configuration);
+```
+
+#### Draw
+
+```js
+diff2htmlUi.draw();
+```
+
+#### Syntax Highlight
+
+**NOTE:** The highlight.js css should come before the diff2html css
 
 ```html
 <!-- Stylesheet -->
-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.6/styles/github.min.css">
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github.min.css" />
+<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
 
 <!-- Javascripts -->
-<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.6/highlight.min.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.6/languages/scala.min.js"></script>
+<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js"></script>
 ```
 
-> Invoke the highlightjs plugin
+> Pass the option `highlight` with value true or invoke `diff2htmlUi.highlightCode()` after `diff2htmlUi.draw()`.
 
 ```js
-document.addEventListener("DOMContentLoaded", function () {
-    // parse the diff to json
-    var diffJson = Diff2Html.getJsonFromDiff(lineDiffExample);
-
-    // collect all the file extensions in the json
-    var allFileLanguages = diffJson.map(function (line) {
-        return line.language;
-    });
-
-    // remove duplicated languages
-    var distinctLanguages = allFileLanguages.filter(function (v, i) {
-        return allFileLanguages.indexOf(v) == i;
-    });
-
-    // pass the languages to the highlightjs plugin
-    hljs.configure({languages: distinctLanguages});
-
-    // generate and inject the diff HTML into the desired place
-    document.getElementById("line-by-line").innerHTML = Diff2Html.getPrettyHtml(diffJson, { inputFormat: 'json' });
-    document.getElementById("side-by-side").innerHTML = Diff2Html.getPrettyHtml(diffJson, { inputFormat: 'json', outputFormat: 'side-by-side' });
-
-    // collect all the code lines and execute the highlight on them
-    var codeLines = document.getElementsByClassName("d2h-code-line-ctn");
-    [].forEach.call(codeLines, function (line) {
-        hljs.highlightBlock(line);
-    });
+document.addEventListener('DOMContentLoaded', () => {
+  const diffString = `diff --git a/sample.js b/sample.js
+  index 0000001..0ddf2ba
+  --- a/sample.js
+  +++ b/sample.js
+  @@ -1 +1 @@
+  -console.log("Hello World!")
+  +console.log("Hello from Diff2Html!")`;
+  const targetElement = document.getElementById('myDiffElement');
+  const configuration = { drawFileList: true, matching: 'lines', highlight: true };
+  const diff2htmlUi = new Diff2HtmlUI(targetElement, diffString, configuration);
+  diff2htmlUi.draw();
+  diff2htmlUi.highlightCode();
 });
 ```
 
-## Contributions
+When using the `auto` color scheme, you will need to specify both the light and dark themes for highlight.js to use.
 
-All the contributions are welcome.
+```html
+<link
+  rel="stylesheet"
+  href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github.min.css"
+  media="screen and (prefers-color-scheme: light)"
+/>
+<link
+  rel="stylesheet"
+  href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github-dark.min.css"
+  media="screen and (prefers-color-scheme: dark)"
+/>
+```
 
-To contribute just send a pull request with your changes and I will review it asap.
+#### Collapsable File Summary List
+
+> Add the dependencies.
+
+```html
+<!-- Javascripts -->
+<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js"></script>
+```
+
+> Invoke the Diff2HtmlUI helper Pass the option `fileListToggle` with value true or invoke
+> `diff2htmlUi.fileListToggle()` after `diff2htmlUi.draw()`.
+
+```js
+document.addEventListener('DOMContentLoaded', () => {
+  const targetElement = document.getElementById('myDiffElement');
+  var diff2htmlUi = new Diff2HtmlUI(targetElement, lineDiffExample, { drawFileList: true, matching: 'lines' });
+  diff2htmlUi.draw();
+  diff2htmlUi.fileListToggle(false);
+});
+```
+
+### Diff2HtmlUI Examples
+
+#### Example with plain HTML+CSS+JS
+
+```html
+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8" />
+    <!-- Make sure to load the highlight.js CSS file before the Diff2Html CSS file -->
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.7.1/styles/github.min.css" />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css"
+    />
+    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html-ui.min.js"></script>
+  </head>
+  <script>
+    const diffString = `diff --git a/sample.js b/sample.js
+index 0000001..0ddf2ba
+--- a/sample.js
++++ b/sample.js
+@@ -1 +1 @@
+-console.log("Hello World!")
++console.log("Hello from Diff2Html!")`;
+
+    document.addEventListener('DOMContentLoaded', function () {
+      var targetElement = document.getElementById('myDiffElement');
+      var configuration = {
+        drawFileList: true,
+        fileListToggle: false,
+        fileListStartVisible: false,
+        fileContentToggle: false,
+        matching: 'lines',
+        outputFormat: 'side-by-side',
+        synchronisedScroll: true,
+        highlight: true,
+        renderNothingWhenEmpty: false,
+      };
+      var diff2htmlUi = new Diff2HtmlUI(targetElement, diffString, configuration);
+      diff2htmlUi.draw();
+      diff2htmlUi.highlightCode();
+    });
+  </script>
+  <body>
+    <div id="myDiffElement"></div>
+  </body>
+</html>
+```
+
+#### StimulusJS with TypeScript
+
+```ts
+import { Controller } from '@hotwired/stimulus';
+
+import { Diff2HtmlUI, Diff2HtmlUIConfig } from 'diff2html/lib/ui/js/diff2html-ui-slim.js';
+
+// Requires `npm install highlight.js`
+import 'highlight.js/styles/github.css';
+import 'diff2html/bundles/css/diff2html.min.css';
+
+export default class extends Controller {
+  connect(): void {
+    const diff2htmlUi = new Diff2HtmlUI(this.diffElement, this.unifiedDiff, this.diffConfiguration);
+
+    diff2htmlUi.draw();
+  }
+
+  get unifiedDiff(): string {
+    return this.data.get('unifiedDiff') || '';
+  }
+
+  get diffElement(): HTMLElement {
+    return this.element as HTMLElement;
+  }
+
+  get diffConfiguration(): Diff2HtmlUIConfig {
+    return {
+      drawFileList: true,
+      matching: 'lines',
+    };
+  }
+}
+```
+
+## Diff2Html Usage
+
+### Diff2Html API
+
+> JSON representation of the diff
+
+```ts
+function parse(diffInput: string, configuration: Diff2HtmlConfig = {}): DiffFile[];
+```
+
+> Pretty HTML representation of the diff
+
+```ts
+function html(diffInput: string | DiffFile[], configuration: Diff2HtmlConfig = {}): string;
+```
+
+### Diff2Html Configuration
+
+The HTML output accepts a Javascript object with configuration. Possible options:
+
+- `outputFormat`: the format of the output data: `'line-by-line'` or `'side-by-side'`, default is `'line-by-line'`
+- `drawFileList`: show a file list before the diff: `true` or `false`, default is `true`
+- `srcPrefix`: add a prefix to all source (before changes) filepaths, default is `''`. Should match the prefix used when
+  [generating the diff](https://git-scm.com/docs/git-diff#Documentation/git-diff.txt---src-prefixltprefixgt).
+- `dstPrefix`: add a prefix to all destination (after changes) filepaths, default is `''`. Should match the prefix used
+  when [generating the diff](https://git-scm.com/docs/git-diff#Documentation/git-diff.txt---dst-prefixltprefixgt)
+- `diffMaxChanges`: number of changed lines after which a file diff is deemed as too big and not displayed, default is
+  `undefined`
+- `diffMaxLineLength`: number of characters in a diff line after which a file diff is deemed as too big and not
+  displayed, default is `undefined`
+- `diffTooBigMessage`: function allowing to customize the message in case of file diff too big (if `diffMaxChanges` or
+  `diffMaxLineLength` is set). Will be given a file index as a number and should return a string.
+- `matching`: matching level: `'lines'` for matching lines, `'words'` for matching lines and words or `'none'`, default
+  is `none`
+- `matchWordsThreshold`: similarity threshold for word matching, default is `0.25`
+- `maxLineLengthHighlight`: only perform diff changes highlight if lines are smaller than this, default is `10000`
+- `diffStyle`: show differences level in each line: `'word'` or `'char'`, default is `'word'`
+- `renderNothingWhenEmpty`: render nothing if the diff shows no change in its comparison: `true` or `false`, default is
+  `false`
+- `matchingMaxComparisons`: perform at most this much comparisons for line matching a block of changes, default is
+  `2500`
+- `maxLineSizeInBlockForComparison`: maximum number of characters of the bigger line in a block to apply comparison,
+  default is `200`
+- `compiledTemplates`: object ([Hogan.js](https://github.com/twitter/hogan.js/) template values) with previously
+  compiled templates to replace parts of the html, default is `{}`. For example:
+  `{ "tag-file-changed": Hogan.compile("<span class="d2h-tag d2h-changed d2h-changed-tag">MODIFIED</span>") }`
+- `rawTemplates`: object (string values) with raw not compiled templates to replace parts of the html, default is `{}`.
+  For example: `{ "tag-file-changed": "<span class="d2h-tag d2h-changed d2h-changed-tag">MODIFIED</span>" }`
+  > For more information regarding the possible templates look into
+  > [src/templates](https://github.com/rtfpessoa/diff2html/tree/master/src/templates)
+- `highlightLanguages`: Map of extension to language name, used for highlighting. This overrides the default language
+  detection based on file extensions.
+- `colorScheme`: color scheme to use for the diff, default is `light`. Possible values are `light`, `dark`, and `auto`
+  which will use the browser's preferred color scheme.
+
+### Diff2Html Browser
+
+Import the stylesheet and the library code.
+
+To load correctly in the Browser you need to include the stylesheet in the final HTML.
+
+```html
+<!-- CSS -->
+<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/diff2html/bundles/css/diff2html.min.css" />
+
+<!-- Javascripts -->
+<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/diff2html/bundles/js/diff2html.min.js"></script>
+```
+
+It will now be available as a global variable named `Diff2Html`.
+
+```js
+document.addEventListener('DOMContentLoaded', () => {
+  var diffHtml = Diff2Html.html('<Unified Diff String>', {
+    drawFileList: true,
+    matching: 'lines',
+    outputFormat: 'side-by-side',
+  });
+  document.getElementById('destination-elem-id').innerHTML = diffHtml;
+});
+```
+
+### Diff2Html NPM / Node.js Library
+
+```js
+const Diff2html = require('diff2html');
+const diffJson = Diff2html.parse('<Unified Diff String>');
+const diffHtml = Diff2html.html(diffJson, { drawFileList: true });
+console.log(diffHtml);
+```
+
+### Diff2Html Examples
+
+#### Example with Angular
+
+- Typescript
+
+```typescript
+import * as Diff2Html from 'diff2html';
+import { Component, OnInit } from '@angular/core';
+
+export class AppDiffComponent implements OnInit {
+  outputHtml: string;
+  constructor() {
+    this.init();
+  }
+
+  ngOnInit() {}
+
+  init() {
+    let strInput =
+      '--- a/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n+++ b/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n@@ -1035,6 +1035,17 @@ func Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (\n \n // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n \n+func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {\n+\tr0, _, e1 := Syscall6(SYS_PSELECT6, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))\n+\tn = int(r0)\n+\tif e1 != 0 {\n+\t\terr = errnoErr(e1)\n+\t}\n+\treturn\n+}\n+\n+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n+\n func read(fd int, p []byte) (n int, err error) {\n \tvar _p0 unsafe.Pointer\n \tif len(p) > 0 {\n';
+    let outputHtml = Diff2Html.html(strInput, { drawFileList: true, matching: 'lines' });
+    this.outputHtml = outputHtml;
+  }
+}
+```
+
+- HTML
+
+```html
+<!doctype html>
+<html>
+  <head>
+    <title>diff2html</title>
+  </head>
+  <body>
+    <div [innerHtml]="outputHtml"></div>
+  </body>
+</html>
+```
+
+- `.angular-cli.json` - Add styles
+
+```json
+"styles": [
+  "diff2html.min.css"
+]
+```
+
+#### Example with Vue.js
+
+```vue
+<template>
+  <div v-html="prettyHtml" />
+</template>
+
+<script>
+import * as Diff2Html from 'diff2html';
+import 'diff2html/bundles/css/diff2html.min.css';
+
+export default {
+  data() {
+    return {
+      diffs:
+        '--- a/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n+++ b/server/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go\n@@ -1035,6 +1035,17 @@ func Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (\n \n // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n \n+func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {\n+\tr0, _, e1 := Syscall6(SYS_PSELECT6, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))\n+\tn = int(r0)\n+\tif e1 != 0 {\n+\t\terr = errnoErr(e1)\n+\t}\n+\treturn\n+}\n+\n+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT\n+\n func read(fd int, p []byte) (n int, err error) {\n \tvar _p0 unsafe.Pointer\n \tif len(p) > 0 {\n',
+    };
+  },
+  computed: {
+    prettyHtml() {
+      return Diff2Html.html(this.diffs, {
+        drawFileList: true,
+        matching: 'lines',
+        outputFormat: 'side-by-side',
+      });
+    },
+  },
+};
+</script>
+```
+
+## Troubleshooting
+
+### 1. Out of memory or Slow execution
+
+#### Causes:
+
+- Big files
+- Big lines
+
+#### Fix:
+
+- Disable the line matching algorithm, by setting the option `{"matching": "none"}` when invoking diff2html
+
+## Contribute
+
+This is a developer friendly project, all the contributions are welcome. To contribute just send a pull request with
+your changes following the guidelines described in `CONTRIBUTING.md`. I will try to review them as soon as possible.
+
+## Contributors
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="https://rtfpessoa.xyz"><img src="https://avatars0.githubusercontent.com/u/902384?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rodrigo Fernandes</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=rtfpessoa" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/stockmind"><img src="https://avatars3.githubusercontent.com/u/5653847?v=4?s=100" width="100px;" alt=""/><br /><sub><b>stockmind</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=stockmind" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/lantian"><img src="https://avatars3.githubusercontent.com/u/535545?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ivan Vorontsov</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=lantian" title="Code">💻</a></td>
+    <td align="center"><a href="http://www.nick-brewer.com"><img src="https://avatars1.githubusercontent.com/u/129300?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Nick Brewer</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=brewern" title="Code">💻</a></td>
+    <td align="center"><a href="http://heyitsmattwade.com"><img src="https://avatars0.githubusercontent.com/u/8504000?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matt Wade</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3Aromellem" title="Bug reports">🐛</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=romellem" title="Code">💻</a></td>
+    <td align="center"><a href="http://mrfyda.github.io"><img src="https://avatars1.githubusercontent.com/u/593860?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rafael Cortês</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=mrfyda" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/nmatpt"><img src="https://avatars2.githubusercontent.com/u/5034733?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Nuno Teixeira</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=nmatpt" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://saino.me/"><img src="https://avatars0.githubusercontent.com/u/1567423?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Koki Oyatsu</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3Akaishuu0123" title="Bug reports">🐛</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=kaishuu0123" title="Code">💻</a></td>
+    <td align="center"><a href="http://www.jamesmonger.com"><img src="https://avatars2.githubusercontent.com/u/2037007?v=4?s=100" width="100px;" alt=""/><br /><sub><b>James Monger</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=Jameskmonger" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://wesssel.github.io/"><img src="https://avatars2.githubusercontent.com/u/7767299?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Wessel van der Pal</b></sub></a><br /><a href="#security-wesssel" title="Security">🛡️</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=wesssel" title="Code">💻</a></td>
+    <td align="center"><a href="https://jung-kim.github.io"><img src="https://avatars2.githubusercontent.com/u/5281068?v=4?s=100" width="100px;" alt=""/><br /><sub><b>jk-kim</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=jung-kim" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/sss0791"><img src="https://avatars1.githubusercontent.com/u/1446970?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sergey Semenov</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3Asss0791" title="Bug reports">🐛</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=sss0791" title="Code">💻</a></td>
+    <td align="center"><a href="http://researcher.watson.ibm.com/researcher/view.php?person=us-nickm"><img src="https://avatars3.githubusercontent.com/u/4741620?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Nick Mitchell</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3Astarpit" title="Bug reports">🐛</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=starpit" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/samiraguiar"><img src="https://avatars0.githubusercontent.com/u/13439135?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Samir Aguiar</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=samiraguiar" title="Documentation">📖</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://twitter.com/pubkeypubkey"><img src="https://avatars3.githubusercontent.com/u/8926560?v=4?s=100" width="100px;" alt=""/><br /><sub><b>pubkey</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=pubkey" title="Documentation">📖</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=pubkey" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/iliyaZelenko"><img src="https://avatars1.githubusercontent.com/u/13103045?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Илья</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=iliyaZelenko" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://akr.am"><img src="https://avatars0.githubusercontent.com/u/1823771?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mohamed Akram</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3Amohd-akram" title="Bug reports">🐛</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=mohd-akram" title="Documentation">📖</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=mohd-akram" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/emarcotte"><img src="https://avatars0.githubusercontent.com/u/249390?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Eugene Marcotte</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=emarcotte" title="Code">💻</a></td>
+    <td align="center"><a href="http://twitter.com/dimasabanin"><img src="https://avatars0.githubusercontent.com/u/8316?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dima Sabanin</b></sub></a><br /><a href="#maintenance-dsabanin" title="Maintenance">🚧</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=dsabanin" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/benabbottnz"><img src="https://avatars2.githubusercontent.com/u/2616473?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ben Abbott</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=benabbottnz" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://webminer.js.org"><img src="https://avatars1.githubusercontent.com/u/2196373?v=4?s=100" width="100px;" alt=""/><br /><sub><b>弘树@阿里</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3Adickeylth" title="Bug reports">🐛</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=dickeylth" title="Documentation">📖</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/Rantanen"><img src="https://avatars0.githubusercontent.com/u/385385?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mikko Rantanen</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/issues?q=author%3ARantanen" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/extend1994"><img src="https://avatars2.githubusercontent.com/u/13430892?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ann</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=extend1994" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/escitalopram"><img src="https://avatars0.githubusercontent.com/u/1155220?v=4?s=100" width="100px;" alt=""/><br /><sub><b>escitalopram</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=escitalopram" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/apps/dependabot"><img src="https://avatars0.githubusercontent.com/in/29110?v=4?s=100" width="100px;" alt=""/><br /><sub><b>dependabot[bot]</b></sub></a><br /><a href="#security-dependabot[bot]" title="Security">🛡️</a> <a href="#maintenance-dependabot[bot]" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="http://www.joshuakgoldberg.com"><img src="https://avatars1.githubusercontent.com/u/3335181?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Josh Goldberg</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=JoshuaKGoldberg" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/apeckham"><img src="https://avatars.githubusercontent.com/u/14110?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Aaron</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=apeckham" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/pgrimaud"><img src="https://avatars.githubusercontent.com/u/1866496?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pierre Grimaud</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=pgrimaud" title="Documentation">📖</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://domdomegg.github.io/"><img src="https://avatars.githubusercontent.com/u/4953590?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Adam Jones</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=domdomegg" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/charguer"><img src="https://avatars.githubusercontent.com/u/1830652?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Arthur Charguéraud</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=charguer" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://twitter.com/pierrci"><img src="https://avatars.githubusercontent.com/u/5020707?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pierric Cistac</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=Pierrci" title="Documentation">📖</a> <a href="https://github.com/rtfpessoa/diff2html/commits?author=Pierrci" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/xlith"><img src="https://avatars.githubusercontent.com/u/510560?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Civan Yavuzşen</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=xlith" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/timgates42"><img src="https://avatars.githubusercontent.com/u/47873678?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tim Gates</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=timgates42" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/campersau"><img src="https://avatars.githubusercontent.com/u/4009570?v=4?s=100" width="100px;" alt=""/><br /><sub><b>campersau</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=campersau" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/apps/dependabot-preview"><img src="https://avatars.githubusercontent.com/in/2141?v=4?s=100" width="100px;" alt=""/><br /><sub><b>dependabot-preview[bot]</b></sub></a><br /><a href="https://github.com/rtfpessoa/diff2html/commits?author=dependabot-preview[bot]" title="Code">💻</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification.
+Contributions of any kind welcome!
 
 ## License
 
-Copyright 2014 Rodrigo Fernandes. Released under the terms of the MIT license.
+Copyright 2014-present Rodrigo Fernandes. Released under the terms of the MIT license.
 
 ## Thanks
 
-This project is inspired in [pretty-diff](https://github.com/scottgonzalez/pretty-diff) by [Scott González](https://github.com/scottgonzalez).
+This project is inspired in [pretty-diff](https://github.com/scottgonzalez/pretty-diff) by
+[Scott González](https://github.com/scottgonzalez).
 
 ---

SECURITY.md

@@ -0,0 +1,35 @@
+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 2.9.x   | :white_check_mark: |
+| < 2.9   | :x:                |
+
+## Reporting a Vulnerability
+
+We take all security bugs in `diff2html` seriously. Thank you for the help improving the security of `diff2html`. We
+appreciate your efforts and responsible disclosure and will make every effort to acknowledge your contributions.
+
+Report security bugs by emailing the lead maintainer at `rtfrodrigo [at] gmail [dot] com`.
+
+The lead maintainer will acknowledge your email within 48 hours, and will send a more detailed response within 48 hours
+indicating the next steps in handling your report. After the initial reply to your report, the security team will
+endeavor to keep you informed of the progress towards a fix and full announcement, and may ask for additional
+information or guidance.
+
+Report security bugs in third-party modules to the person or team maintaining the module.
+
+## Disclosure Policy
+
+When the security team receives a security bug report, they will assign it to a primary handler. This person will
+coordinate the fix and release process, involving the following steps:
+
+- Confirm the problem and determine the affected versions.
+- Audit code to find any potential similar problems.
+- Prepare fixes for all releases still under maintenance. These fixes will be released as fast as possible.
+
+## Comments on this Policy
+
+If you have suggestions on how this process could be improved please submit a pull request.

bower.json

@@ -1,44 +0,0 @@
-{
-  "name": "diff2html",
-  "version": "1.1.0",
-  "homepage": "http://rtfpessoa.github.io/diff2html/",
-  "description": "Fast Diff to colorized HTML",
-  "keywords": [
-    "git",
-    "diff",
-    "pretty",
-    "side",
-    "line",
-    "side-by-side",
-    "line-by-line",
-    "character",
-    "highlight",
-    "pretty",
-    "color",
-    "html",
-    "diff2html",
-    "difftohtml",
-    "colorized"
-  ],
-  "authors": [
-    "Rodrigo Fernandes <rtfrodrigo@gmail.com>"
-  ],
-  "repository": {
-    "type": "git",
-    "url": "git://github.com/rtfpessoa/diff2html.git"
-  },
-  "main": "./src/diff2html.js",
-  "license": "MIT",
-  "moduleType": [
-    "globals",
-    "node"
-  ],
-  "ignore": [
-    "**/.*",
-    "node_modules",
-    "bower_components",
-    "package.json",
-    "release.sh",
-    "config.jscs.json"
-  ]
-}

config.jscs.json

@@ -1,49 +0,0 @@
-{
-  "disallowKeywords": [
-    "with"
-  ],
-  "disallowKeywordsOnNewLine": [
-    "else"
-  ],
-  "disallowMixedSpacesAndTabs": true,
-  "disallowMultipleVarDecl": "exceptUndefined",
-  "disallowNewlineBeforeBlockStatements": true,
-  "disallowQuotedKeysInObjects": true,
-  "disallowSpaceAfterObjectKeys": true,
-  "disallowSpaceAfterPrefixUnaryOperators": true,
-  "disallowSpacesInFunction": {
-    "beforeOpeningRoundBrace": true
-  },
-  "disallowSpacesInsideParentheses": true,
-  "disallowTrailingWhitespace": true,
-  "maximumLineLength": 120,
-  "requireCamelCaseOrUpperCaseIdentifiers": true,
-  "requireCapitalizedComments": true,
-  "requireCapitalizedConstructors": true,
-  "requireCurlyBraces": true,
-  "requireSpaceAfterKeywords": [
-    "if",
-    "else",
-    "for",
-    "while",
-    "do",
-    "switch",
-    "case",
-    "return",
-    "try",
-    "catch",
-    "typeof"
-  ],
-  "requireSpaceAfterLineComment": true,
-  "requireSpaceAfterBinaryOperators": true,
-  "requireSpaceBeforeBinaryOperators": true,
-  "requireSpaceBeforeBlockStatements": true,
-  "requireSpaceBeforeObjectValues": true,
-  "requireSpacesInFunction": {
-    "beforeOpeningCurlyBrace": true
-  },
-  "requireTrailingComma": null,
-  "validateIndentation": 2,
-  "validateLineBreaks": "LF",
-  "validateQuoteMarks": "'"
-}

css/diff2html.css

@@ -1,267 +0,0 @@
-/*
- *
- * Diff to HTML (diff2html.css)
- * Author: rtfpessoa
- *
- */
-
-.d2h-wrapper {
-    display: block;
-    margin: 0 auto;
-    text-align: left;
-    width: 100%;
-}
-
-.d2h-file-wrapper {
-    border: 1px solid #ddd;
-    border-radius: 3px;
-    margin-bottom: 1em;
-}
-
-.d2h-file-header {
-    padding: 5px 10px;
-    border-bottom: 1px solid #d8d8d8;
-    background-color: #f7f7f7;
-    font: 13px Helvetica, arial, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
-}
-
-.d2h-file-stats {
-    display: inline;
-    font-size: 12px;
-    text-align: center;
-    max-width: 15%;
-}
-
-.d2h-lines-added {
-    background-color: #ceffce;
-    border: 1px solid #b4e2b4;
-    color: #399839;
-    border-radius: 5px 0 0 5px;
-    padding: 2px;
-    width: 25px;
-}
-
-.d2h-lines-deleted {
-    background-color: #f7c8c8;
-    border: 1px solid #e9aeae;
-    color: #c33;
-    border-radius: 0 5px 5px 0;
-    padding: 2px;
-    width: 25px;
-}
-
-.d2h-file-name {
-    display: inline;
-    height: 33px;
-    line-height: 33px;
-    max-width: 80%;
-    white-space: nowrap;
-    text-overflow: ellipsis;
-    overflow: hidden;
-}
-
-.d2h-diff-table {
-    border-collapse: collapse;
-    font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
-    font-size: 12px;
-    height: 18px;
-    line-height: 18px;
-    width: 100%;
-}
-
-.d2h-files-diff {
-    width: 100%;
-}
-
-.d2h-file-diff {
-    overflow-x: scroll;
-    overflow-y: hidden;
-}
-
-.d2h-file-side-diff {
-    display: inline-block;
-    overflow-x: scroll;
-    overflow-y: hidden;
-    width: 50%;
-    margin-right: -4px;
-}
-
-.d2h-code-line {
-    display: block;
-    white-space: pre;
-    padding: 0 10px;
-    height: 18px;
-    line-height: 18px;
-    margin-left: 80px;
-    /* Override HighlightJS */
-    color: inherit;
-    overflow-x: inherit;
-    background: none;
-    /* ******************** */
-}
-
-.d2h-code-side-line {
-    display: block;
-    white-space: pre;
-    padding: 0 10px;
-    height: 18px;
-    line-height: 18px;
-    margin-left: 50px;
-    /* Override HighlightJS */
-    color: inherit;
-    overflow-x: inherit;
-    background: none;
-    /* ******************** */
-}
-
-.d2h-code-line del,
-.d2h-code-side-line del {
-    display: inline-block;
-    margin-top: -1px;
-    text-decoration: none;
-    background-color: #ffb6ba;
-    border-radius: 0.2em;
-}
-
-.d2h-code-line ins,
-.d2h-code-side-line ins {
-    display: inline-block;
-    margin-top: -1px;
-    text-decoration: none;
-    background-color: #97f295;
-    border-radius: 0.2em;
-}
-
-.d2h-code-line-prefix {
-    float: left;
-    background: none;
-    padding: 0;
-}
-
-.d2h-code-line-ctn {
-    background: none;
-    padding: 0;
-}
-
-.line-num1 {
-    display: inline-block;
-    float: left;
-    width: 30px;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.line-num2 {
-    display: inline-block;
-    float: right;
-    width: 30px;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.d2h-code-linenumber {
-    position: absolute;
-    width: 2%;
-    min-width: 65px;
-    padding-left: 10px;
-    padding-right: 10px;
-    height: 18px;
-    line-height: 18px;
-    background-color: #fff;
-    color: rgba(0, 0, 0, 0.3);
-    text-align: right;
-    border: solid #eeeeee;
-    border-width: 0 1px 0 1px;
-    cursor: pointer;
-}
-
-.d2h-code-side-linenumber {
-    position: absolute;
-    width: 35px;
-    padding-left: 10px;
-    padding-right: 10px;
-    height: 18px;
-    line-height: 18px;
-    background-color: #fff;
-    color: rgba(0, 0, 0, 0.3);
-    text-align: right;
-    border: solid #eeeeee;
-    border-width: 0 1px 0 1px;
-    cursor: pointer;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.d2h-del {
-    background-color: #fee8e9;
-    border-color: #e9aeae;
-}
-
-.d2h-ins {
-    background-color: #dfd;
-    border-color: #b4e2b4;
-}
-
-.d2h-info {
-    background-color: #f8fafd;
-    color: rgba(0, 0, 0, 0.3);
-    border-color: #d5e4f2;
-}
-
-.d2h-file-list-wrapper {
-    margin-bottom: 10px;
-    padding: 0 10px;
-}
-
-.d2h-file-list-wrapper a {
-    text-decoration: none;
-    color: #3572b0;
-}
-
-.d2h-file-list-wrapper a:visited {
-    color: #3572b0;
-}
-
-.d2h-file-list-header {
-    font-weight: bold;
-    margin-bottom: 5px;
-    text-align: left;
-    display: inline;
-    float:left;
-}
-
-.d2h-file-list-line {
-    text-align: left;
-    font: 13px Helvetica, arial, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
-}
-
-.d2h-file-list-line .d2h-file-name  {
-    line-height: 21px;
-}
-
-.d2h-file-list {
-    display:none;
-}
-
-.d2h-clear {
-    display:block;
-    clear: both;
-}
-
-/* CSS only show/hide */
-.d2h-show {
-    display: none;
-    float:left;
-}
-.d2h-hide {
-    float:left;
-}
-.d2h-hide:target + .d2h-show {
-    display: inline;
-}
-.d2h-hide:target {
-    display: none;
-}
-.d2h-hide:target ~ .d2h-file-list {
-    display:block;
-}

dist/diff2html.css

@@ -1,267 +0,0 @@
-/*
- *
- * Diff to HTML (diff2html.css)
- * Author: rtfpessoa
- *
- */
-
-.d2h-wrapper {
-    display: block;
-    margin: 0 auto;
-    text-align: left;
-    width: 100%;
-}
-
-.d2h-file-wrapper {
-    border: 1px solid #ddd;
-    border-radius: 3px;
-    margin-bottom: 1em;
-}
-
-.d2h-file-header {
-    padding: 5px 10px;
-    border-bottom: 1px solid #d8d8d8;
-    background-color: #f7f7f7;
-    font: 13px Helvetica, arial, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
-}
-
-.d2h-file-stats {
-    display: inline;
-    font-size: 12px;
-    text-align: center;
-    max-width: 15%;
-}
-
-.d2h-lines-added {
-    background-color: #ceffce;
-    border: 1px solid #b4e2b4;
-    color: #399839;
-    border-radius: 5px 0 0 5px;
-    padding: 2px;
-    width: 25px;
-}
-
-.d2h-lines-deleted {
-    background-color: #f7c8c8;
-    border: 1px solid #e9aeae;
-    color: #c33;
-    border-radius: 0 5px 5px 0;
-    padding: 2px;
-    width: 25px;
-}
-
-.d2h-file-name {
-    display: inline;
-    height: 33px;
-    line-height: 33px;
-    max-width: 80%;
-    white-space: nowrap;
-    text-overflow: ellipsis;
-    overflow: hidden;
-}
-
-.d2h-diff-table {
-    border-collapse: collapse;
-    font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
-    font-size: 12px;
-    height: 18px;
-    line-height: 18px;
-    width: 100%;
-}
-
-.d2h-files-diff {
-    width: 100%;
-}
-
-.d2h-file-diff {
-    overflow-x: scroll;
-    overflow-y: hidden;
-}
-
-.d2h-file-side-diff {
-    display: inline-block;
-    overflow-x: scroll;
-    overflow-y: hidden;
-    width: 50%;
-    margin-right: -4px;
-}
-
-.d2h-code-line {
-    display: block;
-    white-space: pre;
-    padding: 0 10px;
-    height: 18px;
-    line-height: 18px;
-    margin-left: 80px;
-    /* Override HighlightJS */
-    color: inherit;
-    overflow-x: inherit;
-    background: none;
-    /* ******************** */
-}
-
-.d2h-code-side-line {
-    display: block;
-    white-space: pre;
-    padding: 0 10px;
-    height: 18px;
-    line-height: 18px;
-    margin-left: 50px;
-    /* Override HighlightJS */
-    color: inherit;
-    overflow-x: inherit;
-    background: none;
-    /* ******************** */
-}
-
-.d2h-code-line del,
-.d2h-code-side-line del {
-    display: inline-block;
-    margin-top: -1px;
-    text-decoration: none;
-    background-color: #ffb6ba;
-    border-radius: 0.2em;
-}
-
-.d2h-code-line ins,
-.d2h-code-side-line ins {
-    display: inline-block;
-    margin-top: -1px;
-    text-decoration: none;
-    background-color: #97f295;
-    border-radius: 0.2em;
-}
-
-.d2h-code-line-prefix {
-    float: left;
-    background: none;
-    padding: 0;
-}
-
-.d2h-code-line-ctn {
-    background: none;
-    padding: 0;
-}
-
-.line-num1 {
-    display: inline-block;
-    float: left;
-    width: 30px;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.line-num2 {
-    display: inline-block;
-    float: right;
-    width: 30px;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.d2h-code-linenumber {
-    position: absolute;
-    width: 2%;
-    min-width: 65px;
-    padding-left: 10px;
-    padding-right: 10px;
-    height: 18px;
-    line-height: 18px;
-    background-color: #fff;
-    color: rgba(0, 0, 0, 0.3);
-    text-align: right;
-    border: solid #eeeeee;
-    border-width: 0 1px 0 1px;
-    cursor: pointer;
-}
-
-.d2h-code-side-linenumber {
-    position: absolute;
-    width: 35px;
-    padding-left: 10px;
-    padding-right: 10px;
-    height: 18px;
-    line-height: 18px;
-    background-color: #fff;
-    color: rgba(0, 0, 0, 0.3);
-    text-align: right;
-    border: solid #eeeeee;
-    border-width: 0 1px 0 1px;
-    cursor: pointer;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.d2h-del {
-    background-color: #fee8e9;
-    border-color: #e9aeae;
-}
-
-.d2h-ins {
-    background-color: #dfd;
-    border-color: #b4e2b4;
-}
-
-.d2h-info {
-    background-color: #f8fafd;
-    color: rgba(0, 0, 0, 0.3);
-    border-color: #d5e4f2;
-}
-
-.d2h-file-list-wrapper {
-    margin-bottom: 10px;
-    padding: 0 10px;
-}
-
-.d2h-file-list-wrapper a {
-    text-decoration: none;
-    color: #3572b0;
-}
-
-.d2h-file-list-wrapper a:visited {
-    color: #3572b0;
-}
-
-.d2h-file-list-header {
-    font-weight: bold;
-    margin-bottom: 5px;
-    text-align: left;
-    display: inline;
-    float:left;
-}
-
-.d2h-file-list-line {
-    text-align: left;
-    font: 13px Helvetica, arial, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
-}
-
-.d2h-file-list-line .d2h-file-name  {
-    line-height: 21px;
-}
-
-.d2h-file-list {
-    display:none;
-}
-
-.d2h-clear {
-    display:block;
-    clear: both;
-}
-
-/* CSS only show/hide */
-.d2h-show {
-    display: none;
-    float:left;
-}
-.d2h-hide {
-    float:left;
-}
-.d2h-hide:target + .d2h-show {
-    display: inline;
-}
-.d2h-hide:target {
-    display: none;
-}
-.d2h-hide:target ~ .d2h-file-list {
-    display:block;
-}

dist/diff2html.min.css

@@ -1 +0,0 @@
-.d2h-wrapper{display:block;margin:0 auto;text-align:left;width:100%}.d2h-file-wrapper{border:1px solid #ddd;border-radius:3px;margin-bottom:1em}.d2h-file-header{padding:5px 10px;border-bottom:1px solid #d8d8d8;background-color:#f7f7f7;font:13px Helvetica,arial,freesans,clean,sans-serif,"Segoe UI Emoji","Segoe UI Symbol"}.d2h-file-stats{display:inline;font-size:12px;text-align:center;max-width:15%}.d2h-lines-added{background-color:#ceffce;border:1px solid #b4e2b4;color:#399839;border-radius:5px 0 0 5px;padding:2px;width:25px}.d2h-lines-deleted{background-color:#f7c8c8;border:1px solid #e9aeae;color:#c33;border-radius:0 5px 5px 0;padding:2px;width:25px}.d2h-file-name{display:inline;height:33px;line-height:33px;max-width:80%;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.d2h-diff-table{border-collapse:collapse;font-family:Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:12px;height:18px;line-height:18px;width:100%}.d2h-files-diff{width:100%}.d2h-file-diff{overflow-x:scroll;overflow-y:hidden}.d2h-file-side-diff{display:inline-block;overflow-x:scroll;overflow-y:hidden;width:50%;margin-right:-4px}.d2h-code-line{display:block;white-space:pre;padding:0 10px;height:18px;line-height:18px;margin-left:80px;color:inherit;overflow-x:inherit;background:none}.d2h-code-side-line{display:block;white-space:pre;padding:0 10px;height:18px;line-height:18px;margin-left:50px;color:inherit;overflow-x:inherit;background:none}.d2h-code-line del,.d2h-code-side-line del{display:inline-block;margin-top:-1px;text-decoration:none;background-color:#ffb6ba;border-radius:.2em}.d2h-code-line ins,.d2h-code-side-line ins{display:inline-block;margin-top:-1px;text-decoration:none;background-color:#97f295;border-radius:.2em}.d2h-code-line-prefix{float:left;background:none;padding:0}.d2h-code-line-ctn{background:none;padding:0}.line-num1{display:inline-block;float:left;width:30px;overflow:hidden;text-overflow:ellipsis}.line-num2{display:inline-block;float:right;width:30px;overflow:hidden;text-overflow:ellipsis}.d2h-code-linenumber{position:absolute;width:2%;min-width:65px;padding-left:10px;padding-right:10px;height:18px;line-height:18px;background-color:#fff;color:rgba(0,0,0,0.3);text-align:right;border:solid #eeeeee;border-width:0 1px 0 1px;cursor:pointer}.d2h-code-side-linenumber{position:absolute;width:35px;padding-left:10px;padding-right:10px;height:18px;line-height:18px;background-color:#fff;color:rgba(0,0,0,0.3);text-align:right;border:solid #eeeeee;border-width:0 1px 0 1px;cursor:pointer;overflow:hidden;text-overflow:ellipsis}.d2h-del{background-color:#fee8e9;border-color:#e9aeae}.d2h-ins{background-color:#dfd;border-color:#b4e2b4}.d2h-info{background-color:#f8fafd;color:rgba(0,0,0,0.3);border-color:#d5e4f2}.d2h-file-list-wrapper{margin-bottom:10px;padding:0 10px}.d2h-file-list-wrapper a{text-decoration:none;color:#3572b0}.d2h-file-list-wrapper a:visited{color:#3572b0}.d2h-file-list-header{font-weight:bold;margin-bottom:5px;text-align:left;display:inline;float:left}.d2h-file-list-line{text-align:left;font:13px Helvetica,arial,freesans,clean,sans-serif,"Segoe UI Emoji","Segoe UI Symbol"}.d2h-file-list-line .d2h-file-name{line-height:21px}.d2h-file-list{display:none}.d2h-clear{display:block;clear:both}.d2h-show{display:none;float:left}.d2h-hide{float:left}.d2h-hide:target+.d2h-show{display:inline}.d2h-hide:target{display:none}.d2h-hide:target~.d2h-file-list{display:block}

eslint.config.mjs

@@ -0,0 +1,77 @@
+import globals from 'globals';
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import pluginJest from 'eslint-plugin-jest';
+import json from '@eslint/json';
+import pluginPromise from 'eslint-plugin-promise';
+
+export default [
+  { ...eslint.configs.recommended, files: ['src/**/*.{js,mjs,cjs,ts}'] },
+  ...tseslint.configs.recommended,
+  // ...tseslint.configs.recommendedTypeChecked,
+  // ...tseslint.configs.strict,
+  // ...tseslint.configs.stylistic,
+  // ...tseslint.configs.strictTypeChecked,
+  // ...tseslint.configs.stylisticTypeChecked,
+  {
+    rules: {
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          args: 'all',
+          argsIgnorePattern: '^_',
+          caughtErrors: 'all',
+          caughtErrorsIgnorePattern: '^_',
+          destructuredArrayIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+          ignoreRestSiblings: true,
+        },
+      ],
+    },
+  },
+  pluginPromise.configs['flat/recommended'],
+  {
+    plugins: {
+      json,
+    },
+    files: ['**/*.json'],
+    language: 'json/json',
+    rules: {
+      'json/no-duplicate-keys': 'error',
+    },
+  },
+  {
+    ...pluginJest.configs['flat/recommended'],
+    ...pluginJest.configs['flat/style'],
+    files: ['src/__tests__/**/*tests.ts'],
+    plugins: { jest: pluginJest },
+    languageOptions: {
+      globals: pluginJest.environments.globals.globals,
+    },
+  },
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+        ...globals.es2025,
+        Atomics: 'readonly',
+        SharedArrayBuffer: 'readonly',
+        document: 'readonly',
+        navigator: 'readonly',
+        window: 'readonly',
+      },
+      parserOptions: {
+        project: './tsconfig.eslint.json',
+        tsconfigRootDir: './',
+      },
+    },
+  },
+  {
+    ignores: ['src/diff2html-templates.*', 'coverage/', 'docs/', 'bundles-out/', 'bundles/', 'lib/', 'lib-esm/'],
+  },
+  {
+    ...tseslint.configs.disableTypeChecked,
+    files: ['**/*.{js,mjs,cjs}'],
+  },
+];

jest.config.js

@@ -0,0 +1,23 @@
+module.exports = {
+  verbose: true,
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  coverageDirectory: './coverage',
+  coverageReporters: ['lcov', 'text', 'html', 'json', 'cobertura', 'clover'],
+  collectCoverageFrom: [
+    'src/**/*.ts',
+    '!src/ui/**',
+    '!src/diff2html-templates.ts',
+    '!src/__tests__/**',
+    '!node_modules/**',
+  ],
+  coverageThreshold: {
+    global: {
+      statements: 93,
+      branches: 86,
+      functions: 98,
+      lines: 93,
+    },
+  },
+  prettierPath: require.resolve('prettier-2'),
+};

package.json

@@ -1,7 +1,7 @@
 {
   "name": "diff2html",
-  "version": "1.1.0",
-  "homepage": "http://rtfpessoa.github.io/diff2html/",
+  "version": "3.0.0-beta.1",
+  "homepage": "https://diff2html.xyz",
   "description": "Fast Diff to colorized HTML",
   "keywords": [
     "git",
@@ -26,25 +26,135 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://www.github.com/rtfpessoa/diff2html.git"
+    "url": "git://github.com/rtfpessoa/diff2html.git"
   },
   "bugs": {
     "url": "https://www.github.com/rtfpessoa/diff2html/issues"
   },
   "engines": {
-    "node": ">=0.10"
+    "node": ">=12"
   },
-  "preferGlobal": "true",
   "scripts": {
-    "test": ""
+    "lint:staged": "lint-staged",
+    "lint:check": "eslint",
+    "lint:fix": "eslint --fix",
+    "prettier": "prettier --ignore-path .gitignore '**/*.+(js|jsx|ts|tsx|json|css|html|md|mdx)'",
+    "format:check": "npm run prettier --check",
+    "format:fix": "npm run prettier --write",
+    "build": "npm run build:css && npm run build:templates && npm run build:commonjs && npm run build:esm && npm run build:bundles && npm run build:website",
+    "build:commonjs": "rm -rf lib; tsc -p tsconfig.json -m CommonJS --outDir lib",
+    "build:esm": "rm -rf lib-esm; tsc -p tsconfig.json -m ESNext --outDir lib-esm",
+    "build:bundles": "rm -rf ./bundles/js; webpack --mode production --config webpack.bundles.ts",
+    "build:css": "rm -rf ./bundles/css; postcss --config ./postcss.config.js --no-map -o ./bundles/css/diff2html.min.css ./src/ui/css/diff2html.css",
+    "build:templates": "ts-node ./scripts/hulk.ts --wrapper ts --variable 'defaultTemplates' ./src/templates/*.mustache > ./src/diff2html-templates.ts",
+    "build:website": "rm -rf docs; webpack --mode production --config webpack.website.ts",
+    "gen": "npm run gen:toc",
+    "gen:toc-base": "markdown-toc --maxdepth 3 --bullets='-' -i",
+    "gen:toc": "npm run gen:toc-base README.md",
+    "test": "is-ci 'test:coverage' 'test:watch'",
+    "test:coverage": "jest --coverage",
+    "test:watch": "jest --watch",
+    "test:debug": "node --inspect-brk ./node_modules/jest/bin/jest.js --runInBand --watch",
+    "coverage:open": "npm run test:coverage && open ./coverage/index.html",
+    "coverage:push": "curl -Ls https://coverage.codacy.com/get.sh | bash",
+    "validate": "npm run build:templates && npm run format:check && npm run lint:check && npm run build && npm run test:coverage",
+    "fix": "npm run format:fix && npm run lint:fix",
+    "start": "npm run start:website",
+    "start:website": "webpack serve --mode development --config webpack.website.ts",
+    "preversion": "npm run validate",
+    "version": "git add -A package.json",
+    "prepare": "husky"
+  },
+  "main": "./lib/diff2html.js",
+  "module": "./lib-esm/diff2html.js",
+  "types": "./lib/diff2html.d.ts",
+  "lint-staged": {
+    "**/*.+(js|jsx|ts|tsx|json)": [
+      "prettier --write",
+      "eslint --fix"
+    ],
+    "**/*.+(css|html|md|mdx)": [
+      "prettier --write"
+    ],
+    "README.md": [
+      "npm run gen:toc-base"
+    ]
   },
-  "main": "./src/diff2html.js",
   "dependencies": {
-    "diff": "1.4.0"
+    "diff": "^7.0.0",
+    "hogan.js": "3.0.2"
+  },
+  "optionalDependencies": {
+    "highlight.js": "11.9.0"
+  },
+  "devDependencies": {
+    "prettier-2": "npm:prettier@^2",
+    "@eslint/js": "^9.17.0",
+    "@eslint/json": "^0.9.0",
+    "@types/diff": "^6.0.0",
+    "@types/hogan.js": "3.0.5",
+    "@types/jest": "^29.5.14",
+    "@types/node": "^22.10.2",
+    "@types/nopt": "3.0.32",
+    "all-contributors-cli": "^6.24.0",
+    "autoprefixer": "^10.4.20",
+    "bulma": "^1.0.2",
+    "clipboard": "2.0.11",
+    "copy-webpack-plugin": "^12.0.2",
+    "css-loader": "^7.1.2",
+    "cssnano": "^7.0.6",
+    "eslint": "^9.17.0",
+    "eslint-plugin-jest": "28.10.0",
+    "eslint-plugin-promise": "^7.2.1",
+    "file-loader": "6.2.0",
+    "globals": "^15.14.0",
+    "handlebars": "4.7.8",
+    "handlebars-loader": "1.7.3",
+    "html-webpack-plugin": "^5.6.3",
+    "husky": "^9.1.7",
+    "image-webpack-loader": "8.1.0",
+    "is-ci-cli": "2.2.0",
+    "jest": "29.7.0",
+    "lint-staged": "^15.2.11",
+    "markdown-toc": "^1.2.0",
+    "mini-css-extract-plugin": "^2.9.2",
+    "mkdirp": "3.0.1",
+    "nopt": "^8.0.0",
+    "postcss": "^8.4.49",
+    "postcss-cli": "11.0.0",
+    "postcss-import": "^16.1.0",
+    "postcss-loader": "^8.1.1",
+    "postcss-preset-env": "^10.1.2",
+    "prettier": "^3.4.2",
+    "ts-jest": "^29.2.5",
+    "ts-loader": "9.5.1",
+    "ts-node": "10.9.2",
+    "typescript": "^5.7.2",
+    "typescript-eslint": "^8.18.2",
+    "url-loader": "4.1.1",
+    "webpack": "^5.97.1",
+    "webpack-cli": "^6.0.1",
+    "webpack-dev-server": "^5.2.0",
+    "whatwg-fetch": "3.6.20"
+  },
+  "resolutions": {
+    "lodash": ">=4.17.20",
+    "minimist": ">=1.2.5",
+    "acorn": ">=7.4.0",
+    "autolinker": ">=3.14.1",
+    "bl": ">=2.2.1",
+    "decompress": ">=4.2.1",
+    "node-forge": ">=0.10.0",
+    "trim-newlines": ">=3.0.1",
+    "async": ">=2.6.4",
+    "terser": ">=5.14.2",
+    "semver-regex": ">=4.0.5",
+    "http-cache-semantics": ">=4.1.1"
   },
-  "devDependencies": {},
   "license": "MIT",
   "files": [
-    "src"
+    "bundles",
+    "lib",
+    "lib-esm"
   ]
 }

postcss.config.js

@@ -0,0 +1,10 @@
+module.exports = {
+  sourceMap: false,
+  plugins: {
+    'postcss-import': {},
+    'postcss-preset-env': {
+      browsers: 'last 2 versions',
+    },
+    cssnano: {},
+  },
+};

release.sh

@@ -1,40 +0,0 @@
-#!/bin/bash
-
-#
-# diff2html release script
-# by rtfpessoa
-#
-
-OUTPUT_DIR=dist
-OUTPUT_JS_FILE=${OUTPUT_DIR}/diff2html.js
-OUTPUT_MIN_JS_FILE=${OUTPUT_DIR}/diff2html.min.js
-OUTPUT_CSS_FILE=${OUTPUT_DIR}/diff2html.css
-OUTPUT_MIN_CSS_FILE=${OUTPUT_DIR}/diff2html.min.css
-
-echo "Creating diff2html release ..."
-
-echo "Cleaning previous versions ..."
-rm -rf ${OUTPUT_DIR}
-mkdir -p ${OUTPUT_DIR}
-
-echo "Preparing dependencies ..."
-rm -rf node_modules
-npm install
-
-echo "Generating js aggregation file in ${OUTPUT_JS_FILE}"
-
-webpack ./src/diff2html.js ${OUTPUT_JS_FILE}
-
-echo "Minifying ${OUTPUT_JS_FILE} to ${OUTPUT_MIN_JS_FILE}"
-
-uglifyjs ${OUTPUT_JS_FILE} -c -o ${OUTPUT_MIN_JS_FILE}
-
-echo "Copying css file to ${OUTPUT_CSS_FILE}"
-
-cp -f css/diff2html.css ${OUTPUT_CSS_FILE}
-
-echo "Minifying ${OUTPUT_CSS_FILE} to ${OUTPUT_MIN_CSS_FILE}"
-
-lessc -x ${OUTPUT_CSS_FILE} ${OUTPUT_MIN_CSS_FILE}
-
-echo "diff2html release created successfully!"

sample/index.html

@@ -1,273 +0,0 @@
-<!doctype html>
-<html lang="en">
-<head>
-    <meta charset="utf-8">
-    <title>Diff to HTML by rtfpessoa</title>
-
-    <!--
-        Diff to HTML (index.html)
-        Author: rtfpessoa
-    -->
-
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.6/styles/github.min.css">
-
-    <!-- -->
-    <link rel="stylesheet" type="text/css" href="../dist/diff2html.min.css">
-    <script type="text/javascript" src="../dist/diff2html.min.js"></script>
-    <!-- -->
-
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.6/highlight.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.6/languages/scala.min.js"></script>
-
-    <script>
-        var lineDiffExample =
-                'diff --git a/coverage.init b/coverage.init\n' +
-                'index fc56817..e8e7e49 100644\n' +
-                '--- a/coverage.init\n' +
-                '+++ b/coverage.init\n' +
-                '@@ -19,7 +19,7 @@\n' +
-                ' -opt "\-nostart"\n' +
-                ' \n' +
-                ' # skip stopenv\n' +
-                '--do "runbvt,stopenv,getlogs,pullcoveragedata"\n' +
-                '+-do "runbvt,getlogs,pullcoveragedata"\n' +
-                ' \n' +
-                ' ##########################################\n' +
-                ' # logs files to bring back to base\n' +
-                'diff --git a/src/attributes/attr.js b/src/attributes/attr.js\n' +
-                'index facdd41..b627fe8 100644\n' +
-                '--- a/src/attributes/attr.js\n' +
-                '+++ b/src/attributes/attr.js\n' +
-                '@@ -1,11 +1,10 @@\n' +
-                ' define([\n' +
-                ' 	"../core",\n' +
-                ' 	"../var/rnotwhite",\n' +
-                '-	"../var/strundefined",\n' +
-                ' 	"../core/access",\n' +
-                ' 	"./support",\n' +
-                ' 	"../selector"\n' +
-                '-], function( jQuery, rnotwhite, strundefined, access, support ) {\n' +
-                '+], function( jQuery, rnotwhite, access, support ) {\n' +
-                ' \n' +
-                ' var nodeHook, boolHook,\n' +
-                ' 	attrHandle = jQuery.expr.attrHandle;\n' +
-                '@@ -33,7 +32,7 @@ jQuery.extend({\n' +
-                ' 		}\n' +
-                ' \n' +
-                ' 		// Fallback to prop when attributes are not supported\n' +
-                '-		if ( typeof elem.getAttribute === strundefined ) {\n' +
-                '+		if ( !elem.getAttribute ) {\n' +
-                ' 			return jQuery.prop( elem, name, value );\n' +
-                ' 		}\n' +
-                ' \n' +
-                'diff --git a/src/attributes/classes.js b/src/attributes/classes.js\n' +
-                'index c617824..c8d1393 100644\n' +
-                '--- a/src/attributes/classes.js\n' +
-                '+++ b/src/attributes/classes.js\n' +
-                '@@ -1,10 +1,9 @@\n' +
-                ' define([\n' +
-                ' 	"../core",\n' +
-                ' 	"../var/rnotwhite",\n' +
-                '-	"../var/strundefined",\n' +
-                ' 	"../data/var/dataPriv",\n' +
-                ' 	"../core/init"\n' +
-                '-], function( jQuery, rnotwhite, strundefined, dataPriv ) {\n' +
-                '+], function( jQuery, rnotwhite, dataPriv ) {\n' +
-                ' \n' +
-                ' var rclass = /[\\t\\r\\n\\f]/g;\n' +
-                ' \n' +
-                '@@ -128,7 +127,7 @@ jQuery.fn.extend({\n' +
-                ' 				}\n' +
-                ' \n' +
-                ' 			// Toggle whole class name\n' +
-                '-			} else if ( type === strundefined || type === "boolean" ) {\n' +
-                '+			} else if ( value === undefined || type === "boolean" ) {\n' +
-                ' 				if ( this.className ) {\n' +
-                ' 					// store className if set\n' +
-                ' 					dataPriv.set( this, "__className__", this.className );\n' +
-                'diff --git a/src/core/init.js b/src/core/init.js\n' +
-                'index e49196a..50f310c 100644\n' +
-                '--- a/src/core/init.js\n' +
-                '+++ b/src/core/init.js\n' +
-                '@@ -101,7 +101,7 @@ var rootjQuery,\n' +
-                ' 		// HANDLE: $(function)\n' +
-                ' 		// Shortcut for document ready\n' +
-                ' 		} else if ( jQuery.isFunction( selector ) ) {\n' +
-                '-			return typeof rootjQuery.ready !== "undefined" ?\n' +
-                '+			return rootjQuery.ready !== undefined ?\n' +
-                ' 				rootjQuery.ready( selector ) :\n' +
-                ' 				// Execute immediately if ready is not present\n' +
-                ' 				selector( jQuery );\n' +
-                'diff --git a/src/event.js b/src/event.js\n' +
-                'index 7336f4d..6183f70 100644\n' +
-                '--- a/src/event.js\n' +
-                '+++ b/src/event.js\n' +
-                '@@ -1,6 +1,5 @@\n' +
-                ' define([\n' +
-                ' 	"./core",\n' +
-                '-	"./var/strundefined",\n' +
-                ' 	"./var/rnotwhite",\n' +
-                ' 	"./var/hasOwn",\n' +
-                ' 	"./var/slice",\n' +
-                '@@ -10,7 +9,7 @@ define([\n' +
-                ' 	"./core/init",\n' +
-                ' 	"./data/accepts",\n' +
-                ' 	"./selector"\n' +
-                '-], function( jQuery, strundefined, rnotwhite, hasOwn, slice, support, dataPriv ) {\n' +
-                '+], function( jQuery, rnotwhite, hasOwn, slice, support, dataPriv ) {\n' +
-                ' \n' +
-                ' var\n' +
-                ' 	rkeyEvent = /^key/,\n' +
-                '@@ -72,7 +71,7 @@ jQuery.event = {\n' +
-                ' 			eventHandle = elemData.handle = function( e ) {\n' +
-                ' 				// Discard the second event of a jQuery.event.trigger() and\n' +
-                ' 				// when an event is called after a page has unloaded\n' +
-                '-				return typeof jQuery !== strundefined && jQuery.event.triggered !== e.type ?\n' +
-                '+				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?\n' +
-                ' 					jQuery.event.dispatch.apply( elem, arguments ) : undefined;\n' +
-                ' 			};\n' +
-                ' 		}\n' +
-                'diff --git a/src/exports/global.js b/src/exports/global.js\n' +
-                'index 6513287..1db4144 100644\n' +
-                '--- a/src/exports/global.js\n' +
-                '+++ b/src/exports/global.js\n' +
-                '@@ -1,7 +1,9 @@\n' +
-                ' define([\n' +
-                '-	"../core",\n' +
-                '-	"../var/strundefined"\n' +
-                '-], function( jQuery, strundefined ) {\n' +
-                '+	"../core"\n' +
-                '+], function( jQuery ) {\n' +
-                '+\n' +
-                '+/* exported noGlobal */\n' +
-                '+/* global   noGlobal: false */\n' +
-                ' \n' +
-                ' var\n' +
-                ' 	// Map over jQuery in case of overwrite\n' +
-                '@@ -25,7 +27,7 @@ jQuery.noConflict = function( deep ) {\n' +
-                ' // Expose jQuery and $ identifiers, even in AMD\n' +
-                ' // (#7102#comment:10, https://github.com/jquery/jquery/pull/557)\n' +
-                ' // and CommonJS for browser emulators (#13566)\n' +
-                '-if ( typeof noGlobal === strundefined ) {\n' +
-                '+if ( !noGlobal ) {\n' +
-                ' 	window.jQuery = window.$ = jQuery;\n' +
-                ' }\n' +
-                ' \n' +
-                'diff --git a/src/offset.js b/src/offset.js\n' +
-                'index cc6ffb4..fa51f18 100644\n' +
-                '--- a/src/offset.js\n' +
-                '+++ b/src/offset.js\n' +
-                '@@ -1,6 +1,5 @@\n' +
-                ' define([\n' +
-                ' 	"./core",\n' +
-                '-	"./var/strundefined",\n' +
-                ' 	"./core/access",\n' +
-                ' 	"./css/var/rnumnonpx",\n' +
-                ' 	"./css/curCSS",\n' +
-                '@@ -10,7 +9,7 @@ define([\n' +
-                ' 	"./core/init",\n' +
-                ' 	"./css",\n' +
-                ' 	"./selector" // contains\n' +
-                '-], function( jQuery, strundefined, access, rnumnonpx, curCSS, addGetHookIf, support ) {\n' +
-                '+], function( jQuery, access, rnumnonpx, curCSS, addGetHookIf, support ) {\n' +
-                ' \n' +
-                ' var docElem = window.document.documentElement;\n' +
-                ' \n' +
-                '@@ -99,7 +98,7 @@ jQuery.fn.extend({\n' +
-                ' \n' +
-                ' 		// Support: BlackBerry 5, iOS 3 (original iPhone)\n' +
-                ' 		// If we dont have gBCR, just use 0,0 rather than error\n' +
-                '-		if ( typeof elem.getBoundingClientRect !== strundefined ) {\n' +
-                '+		if ( elem.getBoundingClientRect !== undefined ) {\n' +
-                ' 			box = elem.getBoundingClientRect();\n' +
-                ' 		}\n' +
-                ' 		win = getWindow( doc );\n' +
-                'diff --git a/src/var/strundefined.js b/src/var/strundefined.js\n' +
-                'deleted file mode 100644\n' +
-                'index 04e16b0..0000000\n' +
-                '--- a/src/var/strundefined.js\n' +
-                '+++ /dev/null\n' +
-                '@@ -1,3 +0,0 @@\n' +
-                '-define(function() {\n' +
-                '-	return typeof undefined;\n' +
-                '-});\n' +
-                'diff --git a/components/textdiff/textdiff.html b/components/textdiff/textdiff.html\n' +
-                'index a3484bf..82209af 100644\n' +
-                '--- a/components/textdiff/textdiff.html\n' +
-                '+++ b/components/textdiff/textdiff.html\n' +
-                '@@ -1,6 +1,8 @@\n' +
-                ' <!-- ko if: isShowingDiffs -->\n' +
-                ' <div>\n' +
-                '-  <div data-bind="event: { load: setDom($element) }"></div>\n' +
-                '+  <!-- ko if: isParsed -->\n' +
-                '+  <div data-bind="template: {nodes: ko.utils.parseHtmlFragment(htmlSrc())}"></div>\n' +
-                '+  <!-- /ko -->\n' +
-                '   <div class="btn-load-more" data-bind="visible: loadMoreCount() > 0">\n' +
-                '   </div>\n' +
-                'diff --git a/test.js b/test.js\n' +
-                'new file mode 100644\n' +
-                'index 0000000..e1e22ec\n' +
-                '--- /dev/null\n' +
-                '+++ b/test.js\n' +
-                '@@ -0,0 +1,6 @@\n' +
-                "+var parser = require('./source/git-parser');\n" +
-                '+\n' +
-                "+var text = 'diff --git a/components/app/app.html b/components/app/app.html\\nindex ecb7a95..027bd9b 100644\\n--- a/components/app/app.html\\n+++ b/components/app/app.html\\n@@ -52,0 +53,3 @@\\n+\\n+\\n+\\n@@ -56,0 +60,3 @@\\n+\\n+\\n+\\n'\n" +
-                '+var patchLineList = [ false, false, false, false ];\n' +
-                '+\n' +
-                '+console.log(parser.parsePatchDiffResult(text, patchLineList));\n' +
-                "diff --git a/a.xml b/b.xml\n" +
-                "index e54317e..82a9a56 100644\n" +
-                "--- a/a.xml\n" +
-                "+++ b/b.xml\n" +
-                "@@ -242,4 +242,6 @@ need to create a new job for native server java api and move these tests to a ne\n" +
-                "                </packages>\n" +
-                "        </test>\n" +
-                " -->\n" +
-                "+\n" +
-                "+\n";
-
-        document.addEventListener("DOMContentLoaded", function() {
-            // parse the diff to json
-            var diffJson = Diff2Html.getJsonFromDiff(lineDiffExample);
-
-            // collect all the file extensions in the json
-            var allFileLanguages = diffJson.map(function(line) {
-                return line.language;
-            });
-
-            // remove duplicated languages
-            var distinctLanguages = allFileLanguages.filter(function(v, i) {
-                return allFileLanguages.indexOf(v) == i;
-            });
-
-            // pass the languages to the highlightjs plugin
-            hljs.configure({languages: distinctLanguages});
-
-            // generate and inject the diff HTML into the desired place
-            document.getElementById("line-by-line").innerHTML = Diff2Html.getPrettyHtml(diffJson, { inputFormat: 'json', showFiles: true });
-            document.getElementById("side-by-side").innerHTML = Diff2Html.getPrettyHtml(diffJson, { inputFormat: 'json', outputFormat: 'side-by-side' });
-
-            // collect all the code lines and execute the highlight on them
-            var codeLines = document.getElementsByClassName("d2h-code-line-ctn");
-            [].forEach.call(codeLines, function(line) {
-                hljs.highlightBlock(line);
-            });
-        });
-    </script>
-
-</head>
-<body style="text-align: center; font-family: 'Source Sans Pro',sans-serif;">
-<h1>Diff to HTML by <a href="https://github.com/rtfpessoa">rtfpessoa</a></h1>
-
-<h2>Line by Line</h2>
-
-<div id="line-by-line" style="margin: 0 auto; max-width: 900px;">
-</div>
-
-<h2>Side by Side</h2>
-
-<div id="side-by-side" style="margin: 0 auto;">
-</div>
-</body>
-</html>

scripts/hulk.ts

@@ -0,0 +1,188 @@
+/*
+ *  Copyright 2011 Twitter, Inc.
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+import * as path from 'path';
+import * as fs from 'fs';
+
+import * as hogan from 'hogan.js';
+import nopt from 'nopt';
+import * as mkderp from 'mkdirp';
+
+const options = nopt(
+  {
+    namespace: String,
+    outputdir: path,
+    variable: String,
+    wrapper: String,
+    version: true,
+    help: true,
+  },
+  {
+    n: ['--namespace'],
+    o: ['--outputdir'],
+    vn: ['--variable'],
+    w: ['--wrapper'],
+    h: ['--help'],
+    v: ['--version'],
+  },
+);
+
+const specials = ['/', '.', '*', '+', '?', '|', '(', ')', '[', ']', '{', '}', '\\'];
+const specialsRegExp = new RegExp('(\\' + specials.join('|\\') + ')', 'g');
+function escape(text: string): string {
+  return text.replace(specialsRegExp, '\\$1');
+}
+
+function cyan(text: string): string {
+  return '\x1B[36m' + text + '\x1B[39m';
+}
+
+function extractFiles(files: string[]): string[] {
+  const usage = `${cyan(
+    'USAGE:',
+  )}  hulk [--wrapper wrapper] [--outputdir outputdir] [--namespace namespace] [--variable variable] FILES
+
+    ${cyan('OPTIONS:')}  [-w, --wrapper]   :: wraps the template (i.e. amd)
+             [-o,  --outputdir] :: outputs the templates as individual files to a directory
+
+             [-n,  --namespace] :: prepend string to template names
+
+             [-vn, --variable]  :: variable name for non-amd wrapper
+
+    ${cyan('EXAMPLE:')}  hulk --wrapper amd ./templates/*.mustache
+
+    ${cyan('NOTE:')}  hulk supports the "*" wildcard and allows you to target specific extensions too
+  `;
+
+  if (options.version) {
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    console.log(require('../package.json').version);
+    process.exit(0);
+  }
+
+  if (!files.length || options.help) {
+    console.log(usage);
+    process.exit(0);
+  }
+
+  return files
+    .map((fileGlob: string) => {
+      if (/\*/.test(fileGlob)) {
+        const [fileGlobPrefix, fileGlobSuffix] = fileGlob.split('*');
+
+        return fs.readdirSync(fileGlobPrefix || '.').reduce<string[]>((previousFiles, relativeFilePath) => {
+          const file = path.join(fileGlobPrefix, relativeFilePath);
+          if (new RegExp(`${escape(fileGlobSuffix)}$`).test(relativeFilePath) && fs.statSync(file).isFile()) {
+            previousFiles.push(file);
+          }
+          return previousFiles;
+        }, []);
+      } else if (fs.statSync(fileGlob).isFile()) {
+        return [fileGlob];
+      } else {
+        return [];
+      }
+    })
+    .reduce((previous, current) => previous.concat(current), []);
+}
+
+// Remove utf-8 byte order mark, http://en.wikipedia.org/wiki/Byte_order_mark
+function removeByteOrderMark(text: string): string {
+  if (text.charCodeAt(0) === 0xfeff) {
+    return text.substring(1);
+  }
+  return text;
+}
+
+// Wrap templates
+function wrap(file: string, name: string, openedFile: string): string {
+  const hoganTemplateString = `new Hogan.Template(${hogan.compile(openedFile, { asString: true })})`;
+
+  const objectName = options.variable || 'templates';
+  const objectAccessor = `${objectName}["${name}"]`;
+  const objectStmt = `${objectAccessor} = ${hoganTemplateString};`;
+
+  switch (options.wrapper) {
+    case 'amd':
+      return `define(${
+        !options.outputdir ? `"${path.join(path.dirname(file), name)}", ` : ''
+      }["hogan.js"], function(Hogan) { return ${hoganTemplateString}; });`;
+
+    case 'node':
+      // If we have a template per file the export will expose the template directly
+      return options.outputdir ? `global.${objectStmt};\nmodule.exports = ${objectAccessor};` : `global.${objectStmt}`;
+
+    case 'ts':
+      return `// @ts-ignore\n${objectStmt}`;
+    default:
+      return objectStmt;
+  }
+}
+
+function prepareOutput(content: string): string {
+  const variableName = options.variable || 'templates';
+  switch (options.wrapper) {
+    case 'amd':
+      return content;
+    case 'node':
+      return `(function() {
+if (!!!global.${variableName}) global.${variableName} = {};
+var Hogan = require("hogan.js");
+${content}
+${!options.outputdir ? `module.exports = global.${variableName};\n` : ''})();`;
+
+    case 'ts':
+      return `import * as Hogan from "hogan.js";
+type CompiledTemplates = { [name: string]: Hogan.Template };
+export const ${variableName}: CompiledTemplates = {};
+${content}`;
+
+    default:
+      return 'if (!!!' + variableName + ') var ' + variableName + ' = {};\n' + content;
+  }
+}
+
+// Write the directory
+if (options.outputdir) {
+  mkderp.sync(options.outputdir);
+}
+
+// Prepend namespace to template name
+function namespace(name: string): string {
+  return (options.namespace || '') + name;
+}
+
+// Write a template foreach file that matches template extension
+const templates = extractFiles(options.argv.remain)
+  .map(file => {
+    const timmedFileContents = fs.readFileSync(file, 'utf8').trim();
+
+    if (!timmedFileContents) return;
+
+    const name = namespace(path.basename(file).replace(/\..*$/, ''));
+    const cleanFileContents = wrap(file, name, removeByteOrderMark(timmedFileContents));
+
+    if (!options.outputdir) return cleanFileContents;
+
+    const fileExtension = options.wrapper === 'ts' ? 'ts' : 'js';
+
+    return fs.writeFileSync(path.join(options.outputdir, `${name}.${fileExtension}`), prepareOutput(cleanFileContents));
+  })
+  .filter(templateContents => typeof templateContents !== 'undefined');
+
+// Output templates
+if (!templates.length || options.outputdir) process.exit(0);
+
+console.log(prepareOutput(templates.join('\n')));

src/__tests__/file-list-renderer-tests.ts

@@ -0,0 +1,272 @@
+import { FileListRenderer } from '../file-list-renderer';
+import HoganJsUtils from '../hoganjs-utils';
+import { ColorSchemeType } from '../types';
+
+describe('FileListRenderer', () => {
+  describe('render', () => {
+    it('should expose old and new files to templates', () => {
+      const hoganUtils = new HoganJsUtils({
+        rawTemplates: {
+          'file-summary-wrapper': '{{{files}}}',
+          'file-summary-line': '{{oldName}}, {{newName}}, {{fileName}}',
+        },
+      });
+      const fileListRenderer = new FileListRenderer(hoganUtils);
+      const files = [
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 12,
+          deletedLines: 41,
+          language: 'js',
+          oldName: 'my/file/name.js',
+          newName: 'my/file/name.js',
+        },
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 12,
+          deletedLines: 41,
+          language: 'js',
+          oldName: 'my/file/name1.js',
+          newName: 'my/file/name2.js',
+        },
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 12,
+          deletedLines: 0,
+          language: 'js',
+          oldName: 'dev/null',
+          newName: 'my/file/name.js',
+          isNew: true,
+        },
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 0,
+          deletedLines: 41,
+          language: 'js',
+          oldName: 'my/file/name.js',
+          newName: 'dev/null',
+          isDeleted: true,
+        },
+      ];
+
+      const fileHtml = fileListRenderer.render(files);
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "my/file/name.js, my/file/name.js, my/file/name.js
+        my/file/name1.js, my/file/name2.js, my/file/{name1.js → name2.js}
+        dev/null, my/file/name.js, my/file/name.js
+        my/file/name.js, dev/null, my/file/name.js"
+      `);
+    });
+
+    it('should work for all kinds of files', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const fileListRenderer = new FileListRenderer(hoganUtils);
+
+      const files = [
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 12,
+          deletedLines: 41,
+          language: 'js',
+          oldName: 'my/file/name.js',
+          newName: 'my/file/name.js',
+        },
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 12,
+          deletedLines: 41,
+          language: 'js',
+          oldName: 'my/file/name1.js',
+          newName: 'my/file/name2.js',
+        },
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 12,
+          deletedLines: 0,
+          language: 'js',
+          oldName: 'dev/null',
+          newName: 'my/file/name.js',
+          isNew: true,
+        },
+        {
+          isCombined: false,
+          isGitDiff: false,
+          blocks: [],
+          addedLines: 0,
+          deletedLines: 41,
+          language: 'js',
+          oldName: 'my/file/name.js',
+          newName: 'dev/null',
+          isDeleted: true,
+        },
+      ];
+      const fileHtml = fileListRenderer.render(files);
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<div class="d2h-file-list-wrapper d2h-light-color-scheme">
+            <div class="d2h-file-list-header">
+                <span class="d2h-file-list-title">Files changed (4)</span>
+                <a class="d2h-file-switch d2h-hide">hide</a>
+                <a class="d2h-file-switch d2h-show">show</a>
+            </div>
+            <ol class="d2h-file-list">
+            <li class="d2h-file-list-line">
+            <span class="d2h-file-name-wrapper">
+              <svg aria-hidden="true" class="d2h-icon d2h-changed" height="16" title="modified" version="1.1"
+                   viewBox="0 0 14 16" width="14">
+                  <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM4 8c0-1.66 1.34-3 3-3s3 1.34 3 3-1.34 3-3 3-3-1.34-3-3z"></path>
+              </svg>      <a href="#d2h-781444" class="d2h-file-name">my/file/name.js</a>
+              <span class="d2h-file-stats">
+                  <span class="d2h-lines-added">+12</span>
+                  <span class="d2h-lines-deleted">-41</span>
+              </span>
+            </span>
+        </li>
+        <li class="d2h-file-list-line">
+            <span class="d2h-file-name-wrapper">
+              <svg aria-hidden="true" class="d2h-icon d2h-moved" height="16" title="renamed" version="1.1"
+                   viewBox="0 0 14 16" width="14">
+                  <path d="M6 9H3V7h3V4l5 4-5 4V9z m8-7v12c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h12c0.55 0 1 0.45 1 1z m-1 0H1v12h12V2z"></path>
+              </svg>      <a href="#d2h-662683" class="d2h-file-name">my/file/{name1.js → name2.js}</a>
+              <span class="d2h-file-stats">
+                  <span class="d2h-lines-added">+12</span>
+                  <span class="d2h-lines-deleted">-41</span>
+              </span>
+            </span>
+        </li>
+        <li class="d2h-file-list-line">
+            <span class="d2h-file-name-wrapper">
+              <svg aria-hidden="true" class="d2h-icon d2h-added" height="16" title="added" version="1.1" viewBox="0 0 14 16"
+                   width="14">
+                  <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM6 9H3V7h3V4h2v3h3v2H8v3H6V9z"></path>
+              </svg>      <a href="#d2h-781444" class="d2h-file-name">my/file/name.js</a>
+              <span class="d2h-file-stats">
+                  <span class="d2h-lines-added">+12</span>
+                  <span class="d2h-lines-deleted">-0</span>
+              </span>
+            </span>
+        </li>
+        <li class="d2h-file-list-line">
+            <span class="d2h-file-name-wrapper">
+              <svg aria-hidden="true" class="d2h-icon d2h-deleted" height="16" title="removed" version="1.1"
+                   viewBox="0 0 14 16" width="14">
+                  <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM11 9H3V7h8v2z"></path>
+              </svg>      <a href="#d2h-781444" class="d2h-file-name">my/file/name.js</a>
+              <span class="d2h-file-stats">
+                  <span class="d2h-lines-added">+0</span>
+                  <span class="d2h-lines-deleted">-41</span>
+              </span>
+            </span>
+        </li>
+            </ol>
+        </div>"
+      `);
+    });
+
+    describe('with dark colorScheme', () => {
+      it('should include dark colorScheme', () => {
+        const hoganUtils = new HoganJsUtils({});
+        const fileListRenderer = new FileListRenderer(hoganUtils, {
+          colorScheme: ColorSchemeType.DARK,
+        });
+
+        const files = [
+          {
+            isCombined: false,
+            isGitDiff: false,
+            blocks: [],
+            addedLines: 12,
+            deletedLines: 41,
+            language: 'js',
+            oldName: 'my/file/name.js',
+            newName: 'my/file/name.js',
+          },
+        ];
+        const fileHtml = fileListRenderer.render(files);
+        expect(fileHtml).toMatchInlineSnapshot(`
+          "<div class="d2h-file-list-wrapper d2h-dark-color-scheme">
+              <div class="d2h-file-list-header">
+                  <span class="d2h-file-list-title">Files changed (1)</span>
+                  <a class="d2h-file-switch d2h-hide">hide</a>
+                  <a class="d2h-file-switch d2h-show">show</a>
+              </div>
+              <ol class="d2h-file-list">
+              <li class="d2h-file-list-line">
+              <span class="d2h-file-name-wrapper">
+                <svg aria-hidden="true" class="d2h-icon d2h-changed" height="16" title="modified" version="1.1"
+                     viewBox="0 0 14 16" width="14">
+                    <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM4 8c0-1.66 1.34-3 3-3s3 1.34 3 3-1.34 3-3 3-3-1.34-3-3z"></path>
+                </svg>      <a href="#d2h-781444" class="d2h-file-name">my/file/name.js</a>
+                <span class="d2h-file-stats">
+                    <span class="d2h-lines-added">+12</span>
+                    <span class="d2h-lines-deleted">-41</span>
+                </span>
+              </span>
+          </li>
+              </ol>
+          </div>"
+        `);
+      });
+    });
+
+    describe('with auto colorScheme', () => {
+      it('should include auto colorScheme', () => {
+        const hoganUtils = new HoganJsUtils({});
+        const fileListRenderer = new FileListRenderer(hoganUtils, {
+          colorScheme: ColorSchemeType.AUTO,
+        });
+
+        const files = [
+          {
+            isCombined: false,
+            isGitDiff: false,
+            blocks: [],
+            addedLines: 12,
+            deletedLines: 41,
+            language: 'js',
+            oldName: 'my/file/name.js',
+            newName: 'my/file/name.js',
+          },
+        ];
+        const fileHtml = fileListRenderer.render(files);
+        expect(fileHtml).toMatchInlineSnapshot(`
+          "<div class="d2h-file-list-wrapper d2h-auto-color-scheme">
+              <div class="d2h-file-list-header">
+                  <span class="d2h-file-list-title">Files changed (1)</span>
+                  <a class="d2h-file-switch d2h-hide">hide</a>
+                  <a class="d2h-file-switch d2h-show">show</a>
+              </div>
+              <ol class="d2h-file-list">
+              <li class="d2h-file-list-line">
+              <span class="d2h-file-name-wrapper">
+                <svg aria-hidden="true" class="d2h-icon d2h-changed" height="16" title="modified" version="1.1"
+                     viewBox="0 0 14 16" width="14">
+                    <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM4 8c0-1.66 1.34-3 3-3s3 1.34 3 3-1.34 3-3 3-3-1.34-3-3z"></path>
+                </svg>      <a href="#d2h-781444" class="d2h-file-name">my/file/name.js</a>
+                <span class="d2h-file-stats">
+                    <span class="d2h-lines-added">+12</span>
+                    <span class="d2h-lines-deleted">-41</span>
+                </span>
+              </span>
+          </li>
+              </ol>
+          </div>"
+        `);
+      });
+    });
+  });
+});

src/__tests__/hogan-cache-tests.ts

@@ -0,0 +1,56 @@
+import HoganJsUtils from '../hoganjs-utils';
+import { CSSLineClass } from '../render-utils';
+
+describe('HoganJsUtils', () => {
+  describe('render', () => {
+    it('should render view', () => {
+      const hoganJsUtils = new HoganJsUtils({});
+      const result = hoganJsUtils.render('generic', 'empty-diff', {
+        contentClass: 'd2h-code-line',
+        CSSLineClass: CSSLineClass,
+      });
+      expect(result).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-info">
+                <div class="d2h-code-line">
+                    File without changes
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+
+    it('should throw exception if template is missing', () => {
+      const hoganJsUtils = new HoganJsUtils({});
+      expect(() => hoganJsUtils.render('generic', 'missing-template', {})).toThrow(Error);
+    });
+
+    it('should allow templates to be overridden with compiled templates', () => {
+      const emptyDiffTemplate = HoganJsUtils.compile('<p>{{myName}}</p>');
+      const hoganJsUtils = new HoganJsUtils({ compiledTemplates: { 'generic-empty-diff': emptyDiffTemplate } });
+
+      const result = hoganJsUtils.render('generic', 'empty-diff', { myName: 'Rodrigo Fernandes' });
+      expect(result).toMatchInlineSnapshot(`"<p>Rodrigo Fernandes</p>"`);
+    });
+
+    it('should allow templates to be overridden with uncompiled templates', () => {
+      const emptyDiffTemplate = '<p>{{myName}}</p>';
+      const hoganJsUtils = new HoganJsUtils({ rawTemplates: { 'generic-empty-diff': emptyDiffTemplate } });
+
+      const result = hoganJsUtils.render('generic', 'empty-diff', { myName: 'Rodrigo Fernandes' });
+      expect(result).toMatchInlineSnapshot(`"<p>Rodrigo Fernandes</p>"`);
+    });
+
+    it('should allow templates to be overridden giving priority to raw templates', () => {
+      const emptyDiffTemplate = HoganJsUtils.compile('<p>Not used!</p>');
+      const emptyDiffTemplateUncompiled = '<p>{{myName}}</p>';
+      const hoganJsUtils = new HoganJsUtils({
+        compiledTemplates: { 'generic-empty-diff': emptyDiffTemplate },
+        rawTemplates: { 'generic-empty-diff': emptyDiffTemplateUncompiled },
+      });
+
+      const result = hoganJsUtils.render('generic', 'empty-diff', { myName: 'Rodrigo Fernandes' });
+      expect(result).toMatchInlineSnapshot(`"<p>Rodrigo Fernandes</p>"`);
+    });
+  });
+});

src/__tests__/line-by-line-tests.ts

@@ -0,0 +1,725 @@
+import LineByLineRenderer from '../line-by-line-renderer';
+import HoganJsUtils from '../hoganjs-utils';
+import { LineType, DiffFile, LineMatchingType } from '../types';
+import { CSSLineClass } from '../render-utils';
+
+describe('LineByLineRenderer', () => {
+  describe('_generateEmptyDiff', () => {
+    it('should return an empty diff', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const fileHtml = lineByLineRenderer.generateEmptyDiff();
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-info">
+                <div class="d2h-code-line">
+                    File without changes
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+  });
+
+  describe('makeLineHtml', () => {
+    it('should work for insertions', () => {
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'my/file/name.js',
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const fileHtml = lineByLineRenderer.generateSingleLineHtml(file, {
+        type: CSSLineClass.INSERTS,
+        prefix: '+',
+        content: 'test',
+        oldNumber: undefined,
+        newNumber: 30,
+      });
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-code-linenumber d2h-ins">
+              <div class="line-num1"></div>
+        <div class="line-num2">30</div>
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">test</span>
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+
+    it('should work for deletions', () => {
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'my/file/name.js',
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const fileHtml = lineByLineRenderer.generateSingleLineHtml(file, {
+        type: CSSLineClass.DELETES,
+        prefix: '-',
+        content: 'test',
+        oldNumber: 30,
+        newNumber: undefined,
+      });
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-code-linenumber d2h-del">
+              <div class="line-num1">30</div>
+        <div class="line-num2"></div>
+            </td>
+            <td class="d2h-del">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn">test</span>
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+
+    it('should convert indents into non breakin spaces (2 white spaces)', () => {
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'my/file/name.js',
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const fileHtml = lineByLineRenderer.generateSingleLineHtml(file, {
+        type: CSSLineClass.INSERTS,
+        prefix: '+',
+        content: '  test',
+        oldNumber: undefined,
+        newNumber: 30,
+      });
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-code-linenumber d2h-ins">
+              <div class="line-num1"></div>
+        <div class="line-num2">30</div>
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">  test</span>
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+
+    it('should convert indents into non breakin spaces (4 white spaces)', () => {
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'my/file/name.js',
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const fileHtml = lineByLineRenderer.generateSingleLineHtml(file, {
+        type: CSSLineClass.INSERTS,
+        prefix: '+',
+        content: '    test',
+        oldNumber: undefined,
+        newNumber: 30,
+      });
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-code-linenumber d2h-ins">
+              <div class="line-num1"></div>
+        <div class="line-num2">30</div>
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">    test</span>
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+
+    it('should preserve tabs', () => {
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'my/file/name.js',
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const fileHtml = lineByLineRenderer.generateSingleLineHtml(file, {
+        type: CSSLineClass.INSERTS,
+        prefix: '+',
+        content: '\ttest',
+        oldNumber: undefined,
+        newNumber: 30,
+      });
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-code-linenumber d2h-ins">
+              <div class="line-num1"></div>
+        <div class="line-num2">30</div>
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">	test</span>
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+  });
+
+  describe('makeFileDiffHtml', () => {
+    it('should work for simple file', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'my/file/name.js',
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const diffs = '<span>Random Html</span>';
+
+      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<div id="d2h-781444" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">my/file/name.js</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <span>Random Html</span>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>"
+      `);
+    });
+    it('should work for simple added file', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+
+      const file = {
+        addedLines: 12,
+        deletedLines: 0,
+        language: 'js',
+        oldName: 'dev/null',
+        newName: 'my/file/name.js',
+        isNew: true,
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const diffs = '<span>Random Html</span>';
+
+      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<div id="d2h-781444" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">my/file/name.js</span>
+            <span class="d2h-tag d2h-added d2h-added-tag">ADDED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <span>Random Html</span>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>"
+      `);
+    });
+    it('should work for simple deleted file', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+
+      const file = {
+        addedLines: 0,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name.js',
+        newName: 'dev/null',
+        isDeleted: true,
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const diffs = '<span>Random Html</span>';
+
+      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<div id="d2h-781444" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">my/file/name.js</span>
+            <span class="d2h-tag d2h-deleted d2h-deleted-tag">DELETED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <span>Random Html</span>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>"
+      `);
+    });
+    it('should work for simple renamed file', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+
+      const file = {
+        addedLines: 12,
+        deletedLines: 41,
+        language: 'js',
+        oldName: 'my/file/name1.js',
+        newName: 'my/file/name2.js',
+        isRename: true,
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+      const diffs = '<span>Random Html</span>';
+
+      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        "<div id="d2h-662683" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">my/file/{name1.js → name2.js}</span>
+            <span class="d2h-tag d2h-moved d2h-moved-tag">RENAMED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <span>Random Html</span>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>"
+      `);
+    });
+    it('should return empty when option renderNothingWhenEmpty is true and file blocks not present', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {
+        renderNothingWhenEmpty: true,
+      });
+
+      const file = {
+        addedLines: 0,
+        deletedLines: 0,
+        language: 'js',
+        oldName: 'my/file/name1.js',
+        newName: 'my/file/name2.js',
+        isRename: true,
+        isCombined: false,
+        isGitDiff: false,
+        blocks: [],
+      };
+
+      const diffs = '<span>Random Html</span>';
+
+      const fileHtml = lineByLineRenderer.makeFileDiffHtml(file, diffs);
+
+      expect(fileHtml).toMatchInlineSnapshot(`""`);
+    });
+  });
+
+  describe('generateLineByLineJsonHtml', () => {
+    it('should work for list of files', () => {
+      const exampleJson: DiffFile[] = [
+        {
+          blocks: [
+            {
+              lines: [
+                {
+                  content: '-test',
+                  type: LineType.DELETE,
+                  oldNumber: 1,
+                  newNumber: undefined,
+                },
+                {
+                  content: '+test1r',
+                  type: LineType.INSERT,
+                  oldNumber: undefined,
+                  newNumber: 1,
+                },
+              ],
+              oldStartLine: 1,
+              oldStartLine2: undefined,
+              newStartLine: 1,
+              header: '@@ -1 +1 @@',
+            },
+          ],
+          deletedLines: 1,
+          addedLines: 1,
+          checksumBefore: '0000001',
+          checksumAfter: '0ddf2ba',
+          oldName: 'sample',
+          newName: 'sample',
+          language: 'txt',
+          isCombined: false,
+          isGitDiff: true,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {
+        matching: LineMatchingType.LINES,
+      });
+      const html = lineByLineRenderer.render(exampleJson);
+      expect(html).toMatchInlineSnapshot(`
+        "<div class="d2h-wrapper d2h-light-color-scheme">
+            <div id="d2h-675094" class="d2h-file-wrapper" data-lang="txt">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">sample</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <tr>
+            <td class="d2h-code-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-line">@@ -1 +1 @@</div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-linenumber d2h-del d2h-change">
+              <div class="line-num1">1</div>
+        <div class="line-num2"></div>
+            </td>
+            <td class="d2h-del d2h-change">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn"><del>test</del></span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-linenumber d2h-ins d2h-change">
+              <div class="line-num1"></div>
+        <div class="line-num2">1</div>
+            </td>
+            <td class="d2h-ins d2h-change">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn"><ins>test1r</ins></span>
+                </div>
+            </td>
+        </tr>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
+        </div>"
+      `);
+    });
+
+    it('should work for empty blocks', () => {
+      const exampleJson = [
+        {
+          blocks: [],
+          deletedLines: 0,
+          addedLines: 0,
+          oldName: 'sample',
+          language: 'js',
+          newName: 'sample',
+          isCombined: false,
+          isGitDiff: false,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {
+        renderNothingWhenEmpty: false,
+      });
+      const html = lineByLineRenderer.render(exampleJson);
+      expect(html).toMatchInlineSnapshot(`
+        "<div class="d2h-wrapper d2h-light-color-scheme">
+            <div id="d2h-675094" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">sample</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <tr>
+            <td class="d2h-info">
+                <div class="d2h-code-line">
+                    File without changes
+                </div>
+            </td>
+        </tr>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
+        </div>"
+      `);
+    });
+
+    it('should work for too big file diff', () => {
+      const exampleJson = [
+        {
+          blocks: [
+            {
+              header: '<a href="http://example.com">Custom link to render</a>',
+              lines: [],
+              newStartLine: 0,
+              oldStartLine: 0,
+              oldStartLine2: undefined,
+            },
+          ],
+          deletedLines: 0,
+          addedLines: 0,
+          oldName: 'sample',
+          language: 'js',
+          newName: 'sample',
+          isCombined: false,
+          isGitDiff: false,
+          isTooBig: true,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils);
+      const html = lineByLineRenderer.render(exampleJson);
+      expect(html).toMatchInlineSnapshot(`
+        "<div class="d2h-wrapper d2h-light-color-scheme">
+            <div id="d2h-675094" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+            <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">sample</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-file-diff">
+                <div class="d2h-code-wrapper">
+                    <table class="d2h-diff-table">
+                        <tbody class="d2h-diff-tbody">
+                        <tr>
+            <td class="d2h-code-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-line"><a href="http://example.com">Custom link to render</a></div>
+            </td>
+        </tr>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
+        </div>"
+      `);
+    });
+  });
+
+  describe('_generateFileHtml', () => {
+    it('should work for simple file', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const lineByLineRenderer = new LineByLineRenderer(hoganUtils, {});
+      const file: DiffFile = {
+        blocks: [
+          {
+            lines: [
+              {
+                content: ' one context line',
+                type: LineType.CONTEXT,
+                oldNumber: 1,
+                newNumber: 1,
+              },
+              {
+                content: '-test',
+                type: LineType.DELETE,
+                oldNumber: 2,
+                newNumber: undefined,
+              },
+              {
+                content: '+test1r',
+                type: LineType.INSERT,
+                oldNumber: undefined,
+                newNumber: 2,
+              },
+              {
+                content: '+test2r',
+                type: LineType.INSERT,
+                oldNumber: undefined,
+                newNumber: 3,
+              },
+            ],
+            oldStartLine: 1,
+            oldStartLine2: undefined,
+            newStartLine: 1,
+            header: '@@ -1 +1 @@',
+          },
+        ],
+        deletedLines: 1,
+        addedLines: 1,
+        checksumBefore: '0000001',
+        checksumAfter: '0ddf2ba',
+        oldName: 'sample',
+        language: 'txt',
+        newName: 'sample',
+        isCombined: false,
+        isGitDiff: true,
+      };
+
+      const html = lineByLineRenderer.generateFileHtml(file);
+
+      expect(html).toMatchInlineSnapshot(`
+        "<tr>
+            <td class="d2h-code-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-line">@@ -1 +1 @@</div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-linenumber d2h-cntx">
+              <div class="line-num1">1</div>
+        <div class="line-num2">1</div>
+            </td>
+            <td class="d2h-cntx">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">&nbsp;</span>
+                    <span class="d2h-code-line-ctn">one context line</span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-linenumber d2h-del d2h-change">
+              <div class="line-num1">2</div>
+        <div class="line-num2"></div>
+            </td>
+            <td class="d2h-del d2h-change">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn"><del>test</del></span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-linenumber d2h-ins d2h-change">
+              <div class="line-num1"></div>
+        <div class="line-num2">2</div>
+            </td>
+            <td class="d2h-ins d2h-change">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn"><ins>test1r</ins></span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-linenumber d2h-ins">
+              <div class="line-num1"></div>
+        <div class="line-num2">3</div>
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">test2r</span>
+                </div>
+            </td>
+        </tr>"
+      `);
+    });
+  });
+});

src/__tests__/printer-utils-tests.ts

@@ -0,0 +1,152 @@
+import { escapeForHtml, getHtmlId, filenameDiff, diffHighlight } from '../render-utils';
+import { DiffStyleType, LineMatchingType } from '../types';
+
+describe('Utils', () => {
+  describe('escapeForHtml', () => {
+    it('should escape & with &', () => {
+      const result = escapeForHtml('&');
+      expect(result).toBe('&');
+    });
+    it('should escape < with &lt;', () => {
+      const result = escapeForHtml('<');
+      expect(result).toBe('&lt;');
+    });
+    it('should escape > with &gt;', () => {
+      const result = escapeForHtml('>');
+      expect(result).toBe('&gt;');
+    });
+    it('should escape " with &quot;', () => {
+      const result = escapeForHtml('"');
+      expect(result).toBe('&quot;');
+    });
+    it("should escape ' with &#x27;", () => {
+      const result = escapeForHtml("'");
+      expect(result).toBe('&#x27;');
+    });
+    it('should escape / with &#x2F;', () => {
+      const result = escapeForHtml('/');
+      expect(result).toBe('&#x2F;');
+    });
+    it('should escape a string containing HTML code', () => {
+      const result = escapeForHtml(`<a href="/search?q=diff2html">Search 'Diff2Html'</a>`);
+      expect(result).toBe(
+        '&lt;a href=&quot;&#x2F;search?q=diff2html&quot;&gt;Search &#x27;Diff2Html&#x27;&lt;&#x2F;a&gt;',
+      );
+    });
+  });
+
+  describe('getHtmlId', () => {
+    it('should generate file unique id', () => {
+      const result = getHtmlId({
+        oldName: 'sample.js',
+        newName: 'sample.js',
+      });
+      expect(result).toBe('d2h-960013');
+    });
+  });
+
+  describe('getDiffName', () => {
+    it('should generate the file name for a changed file', () => {
+      const result = filenameDiff({
+        oldName: 'sample.js',
+        newName: 'sample.js',
+      });
+      expect(result).toBe('sample.js');
+    });
+    it('should generate the file name for a changed file and full rename', () => {
+      const result = filenameDiff({
+        oldName: 'sample1.js',
+        newName: 'sample2.js',
+      });
+      expect(result).toBe('sample1.js → sample2.js');
+    });
+    it('should generate the file name for a changed file and prefix rename', () => {
+      const result = filenameDiff({
+        oldName: 'src/path/sample.js',
+        newName: 'source/path/sample.js',
+      });
+      expect(result).toBe('{src → source}/path/sample.js');
+    });
+    it('should generate the file name for a changed file and suffix rename', () => {
+      const result = filenameDiff({
+        oldName: 'src/path/sample1.js',
+        newName: 'src/path/sample2.js',
+      });
+      expect(result).toBe('src/path/{sample1.js → sample2.js}');
+    });
+    it('should generate the file name for a changed file and middle rename', () => {
+      const result = filenameDiff({
+        oldName: 'src/really/big/path/sample.js',
+        newName: 'src/small/path/sample.js',
+      });
+      expect(result).toBe('src/{really/big → small}/path/sample.js');
+    });
+    it('should generate the file name for a deleted file', () => {
+      const result = filenameDiff({
+        oldName: 'src/my/file.js',
+        newName: '/dev/null',
+      });
+      expect(result).toBe('src/my/file.js');
+    });
+    it('should generate the file name for a new file', () => {
+      const result = filenameDiff({
+        oldName: '/dev/null',
+        newName: 'src/my/file.js',
+      });
+      expect(result).toBe('src/my/file.js');
+    });
+  });
+
+  describe('diffHighlight', () => {
+    it('should highlight two lines', () => {
+      const result = diffHighlight('-var myVar = 2;', '+var myVariable = 3;', false, {
+        matching: LineMatchingType.WORDS,
+      });
+
+      expect(result).toEqual({
+        oldLine: {
+          prefix: '-',
+          content: 'var <del>myVar</del> = <del>2</del>;',
+        },
+        newLine: {
+          prefix: '+',
+          content: 'var <ins>myVariable</ins> = <ins>3</ins>;',
+        },
+      });
+    });
+    it('should highlight two lines char by char', () => {
+      const result = diffHighlight('-var myVar = 2;', '+var myVariable = 3;', false, {
+        diffStyle: DiffStyleType.CHAR,
+      });
+
+      expect(result).toEqual({
+        oldLine: {
+          prefix: '-',
+          content: 'var myVar = <del>2</del>;',
+        },
+        newLine: {
+          prefix: '+',
+          content: 'var myVar<ins>iable</ins> = <ins>3</ins>;',
+        },
+      });
+    });
+    it('should highlight combined diff lines', () => {
+      const result = diffHighlight(' -var myVar = 2;', ' +var myVariable = 3;', true, {
+        diffStyle: DiffStyleType.WORD,
+        matching: LineMatchingType.WORDS,
+        matchWordsThreshold: 1.0,
+      });
+
+      expect(result).toEqual({
+        oldLine: {
+          prefix: ' -',
+          content: 'var <del class="d2h-change">myVar</del> = <del class="d2h-change">2</del>;',
+        },
+        newLine: {
+          prefix: ' +',
+          content: 'var <ins class="d2h-change">myVariable</ins> = <ins class="d2h-change">3</ins>;',
+        },
+      });
+    });
+  });
+});

src/__tests__/side-by-side-printer-tests.ts

@@ -0,0 +1,538 @@
+import SideBySideRenderer from '../side-by-side-renderer';
+import HoganJsUtils from '../hoganjs-utils';
+import { LineType, DiffLine, DiffFile, LineMatchingType } from '../types';
+import { CSSLineClass } from '../render-utils';
+
+describe('SideBySideRenderer', () => {
+  describe('generateEmptyDiff', () => {
+    it('should return an empty diff', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, {});
+      const fileHtml = sideBySideRenderer.generateEmptyDiff();
+      expect(fileHtml).toMatchInlineSnapshot(`
+        {
+          "left": "<tr>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">
+                    File without changes
+                </div>
+            </td>
+        </tr>",
+          "right": "",
+        }
+      `);
+    });
+  });
+
+  describe('generateSideBySideFileHtml', () => {
+    it('should generate lines with the right prefixes', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, {});
+
+      const file: DiffFile = {
+        isGitDiff: true,
+        blocks: [
+          {
+            lines: [
+              {
+                content: ' context',
+                type: LineType.CONTEXT,
+                oldNumber: 19,
+                newNumber: 19,
+              },
+              {
+                content: '-removed',
+                type: LineType.DELETE,
+                oldNumber: 20,
+                newNumber: undefined,
+              },
+              {
+                content: '+added',
+                type: LineType.INSERT,
+                oldNumber: undefined,
+                newNumber: 20,
+              },
+              {
+                content: '+another added',
+                type: LineType.INSERT,
+                oldNumber: undefined,
+                newNumber: 21,
+              },
+            ],
+            oldStartLine: 19,
+            newStartLine: 19,
+            header: '@@ -19,7 +19,7 @@',
+          },
+        ],
+        deletedLines: 1,
+        addedLines: 2,
+        checksumBefore: 'fc56817',
+        checksumAfter: 'e8e7e49',
+        mode: '100644',
+        oldName: 'coverage.init',
+        language: 'init',
+        newName: 'coverage.init',
+        isCombined: false,
+      };
+
+      const fileHtml = sideBySideRenderer.generateFileHtml(file);
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        {
+          "left": "<tr>
+            <td class="d2h-code-side-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">@@ -19,7 +19,7 @@</div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-cntx">
+              19
+            </td>
+            <td class="d2h-cntx">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">&nbsp;</span>
+                    <span class="d2h-code-line-ctn">context</span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-del d2h-change">
+              20
+            </td>
+            <td class="d2h-del d2h-change">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn"><del>removed</del></span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-code-side-emptyplaceholder d2h-cntx d2h-emptyplaceholder">
+              
+            </td>
+            <td class="d2h-cntx d2h-emptyplaceholder">
+                <div class="d2h-code-side-line d2h-code-side-emptyplaceholder">
+                    <span class="d2h-code-line-prefix">&nbsp;</span>
+                    <span class="d2h-code-line-ctn"><br></span>
+                </div>
+            </td>
+        </tr>",
+          "right": "<tr>
+            <td class="d2h-code-side-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">&nbsp;</div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-cntx">
+              19
+            </td>
+            <td class="d2h-cntx">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">&nbsp;</span>
+                    <span class="d2h-code-line-ctn">context</span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-ins d2h-change">
+              20
+            </td>
+            <td class="d2h-ins d2h-change">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn"><ins>added</ins></span>
+                </div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-ins">
+              21
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">another added</span>
+                </div>
+            </td>
+        </tr>",
+        }
+      `);
+    });
+  });
+
+  describe('generateSingleLineHtml', () => {
+    it('should work for insertions', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, {});
+      const fileHtml = sideBySideRenderer.generateLineHtml(undefined, {
+        type: CSSLineClass.INSERTS,
+        prefix: '+',
+        content: 'test',
+        number: 30,
+      });
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        {
+          "left": "<tr>
+            <td class="d2h-code-side-linenumber d2h-code-side-emptyplaceholder d2h-cntx d2h-emptyplaceholder">
+              
+            </td>
+            <td class="d2h-cntx d2h-emptyplaceholder">
+                <div class="d2h-code-side-line d2h-code-side-emptyplaceholder">
+                    <span class="d2h-code-line-prefix">&nbsp;</span>
+                    <span class="d2h-code-line-ctn"><br></span>
+                </div>
+            </td>
+        </tr>",
+          "right": "<tr>
+            <td class="d2h-code-side-linenumber d2h-ins">
+              30
+            </td>
+            <td class="d2h-ins">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn">test</span>
+                </div>
+            </td>
+        </tr>",
+        }
+      `);
+    });
+    it('should work for deletions', () => {
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, {});
+      const fileHtml = sideBySideRenderer.generateLineHtml(
+        {
+          type: CSSLineClass.DELETES,
+          prefix: '-',
+          content: 'test',
+          number: 30,
+        },
+        undefined,
+      );
+
+      expect(fileHtml).toMatchInlineSnapshot(`
+        {
+          "left": "<tr>
+            <td class="d2h-code-side-linenumber d2h-del">
+              30
+            </td>
+            <td class="d2h-del">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn">test</span>
+                </div>
+            </td>
+        </tr>",
+          "right": "<tr>
+            <td class="d2h-code-side-linenumber d2h-code-side-emptyplaceholder d2h-cntx d2h-emptyplaceholder">
+              
+            </td>
+            <td class="d2h-cntx d2h-emptyplaceholder">
+                <div class="d2h-code-side-line d2h-code-side-emptyplaceholder">
+                    <span class="d2h-code-line-prefix">&nbsp;</span>
+                    <span class="d2h-code-line-ctn"><br></span>
+                </div>
+            </td>
+        </tr>",
+        }
+      `);
+    });
+  });
+
+  describe('generateSideBySideJsonHtml', () => {
+    it('should work for list of files', () => {
+      const exampleJson: DiffFile[] = [
+        {
+          blocks: [
+            {
+              lines: [
+                {
+                  content: '-test',
+                  type: LineType.DELETE,
+                  oldNumber: 1,
+                  newNumber: undefined,
+                },
+                {
+                  content: '+test1r',
+                  type: LineType.INSERT,
+                  oldNumber: undefined,
+                  newNumber: 1,
+                },
+              ],
+              oldStartLine: 1,
+              oldStartLine2: undefined,
+              newStartLine: 1,
+              header: '@@ -1 +1 @@',
+            },
+          ],
+          deletedLines: 1,
+          addedLines: 1,
+          checksumBefore: '0000001',
+          checksumAfter: '0ddf2ba',
+          oldName: 'sample',
+          language: 'txt',
+          newName: 'sample',
+          isCombined: false,
+          isGitDiff: true,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, { matching: LineMatchingType.LINES });
+      const html = sideBySideRenderer.render(exampleJson);
+      expect(html).toMatchInlineSnapshot(`
+        "<div class="d2h-wrapper d2h-light-color-scheme">
+            <div id="d2h-675094" class="d2h-file-wrapper" data-lang="txt">
+            <div class="d2h-file-header">
+              <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">sample</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-files-diff">
+                <div class="d2h-file-side-diff">
+                    <div class="d2h-code-wrapper">
+                        <table class="d2h-diff-table">
+                            <tbody class="d2h-diff-tbody">
+                            <tr>
+            <td class="d2h-code-side-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">@@ -1 +1 @@</div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-del d2h-change">
+              1
+            </td>
+            <td class="d2h-del d2h-change">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn"><del>test</del></span>
+                </div>
+            </td>
+        </tr>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+                <div class="d2h-file-side-diff">
+                    <div class="d2h-code-wrapper">
+                        <table class="d2h-diff-table">
+                            <tbody class="d2h-diff-tbody">
+                            <tr>
+            <td class="d2h-code-side-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">&nbsp;</div>
+            </td>
+        </tr><tr>
+            <td class="d2h-code-side-linenumber d2h-ins d2h-change">
+              1
+            </td>
+            <td class="d2h-ins d2h-change">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn"><ins>test1r</ins></span>
+                </div>
+            </td>
+        </tr>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+            </div>
+        </div>
+        </div>"
+      `);
+    });
+    it('should work for files without blocks', () => {
+      const exampleJson: DiffFile[] = [
+        {
+          blocks: [],
+          oldName: 'sample',
+          language: 'js',
+          newName: 'sample',
+          isCombined: false,
+          addedLines: 0,
+          deletedLines: 0,
+          isGitDiff: false,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, {});
+      const html = sideBySideRenderer.render(exampleJson);
+      expect(html).toMatchInlineSnapshot(`
+        "<div class="d2h-wrapper d2h-light-color-scheme">
+            <div id="d2h-675094" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+              <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">sample</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-files-diff">
+                <div class="d2h-file-side-diff">
+                    <div class="d2h-code-wrapper">
+                        <table class="d2h-diff-table">
+                            <tbody class="d2h-diff-tbody">
+                            <tr>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">
+                    File without changes
+                </div>
+            </td>
+        </tr>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+                <div class="d2h-file-side-diff">
+                    <div class="d2h-code-wrapper">
+                        <table class="d2h-diff-table">
+                            <tbody class="d2h-diff-tbody">
+                            
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+            </div>
+        </div>
+        </div>"
+      `);
+    });
+
+    it('should work for too big file diff', () => {
+      const exampleJson = [
+        {
+          blocks: [
+            {
+              header: '<a href="http://example.com">Custom link to render</a>',
+              lines: [],
+              newStartLine: 0,
+              oldStartLine: 0,
+              oldStartLine2: undefined,
+            },
+          ],
+          deletedLines: 0,
+          addedLines: 0,
+          oldName: 'sample',
+          language: 'js',
+          newName: 'sample',
+          isCombined: false,
+          isGitDiff: false,
+          isTooBig: true,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils);
+      const html = sideBySideRenderer.render(exampleJson);
+      expect(html).toMatchInlineSnapshot(`
+        "<div class="d2h-wrapper d2h-light-color-scheme">
+            <div id="d2h-675094" class="d2h-file-wrapper" data-lang="js">
+            <div class="d2h-file-header">
+              <span class="d2h-file-name-wrapper">
+            <svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+                <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+            </svg>    <span class="d2h-file-name">sample</span>
+            <span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span></span>
+        <label class="d2h-file-collapse">
+            <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+            Viewed
+        </label>
+            </div>
+            <div class="d2h-files-diff">
+                <div class="d2h-file-side-diff">
+                    <div class="d2h-code-wrapper">
+                        <table class="d2h-diff-table">
+                            <tbody class="d2h-diff-tbody">
+                            <tr>
+            <td class="d2h-code-side-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line"><a href="http://example.com">Custom link to render</a></div>
+            </td>
+        </tr>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+                <div class="d2h-file-side-diff">
+                    <div class="d2h-code-wrapper">
+                        <table class="d2h-diff-table">
+                            <tbody class="d2h-diff-tbody">
+                            <tr>
+            <td class="d2h-code-side-linenumber d2h-info"></td>
+            <td class="d2h-info">
+                <div class="d2h-code-side-line">&nbsp;</div>
+            </td>
+        </tr>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+            </div>
+        </div>
+        </div>"
+      `);
+    });
+  });
+
+  describe('processLines', () => {
+    it('should process file lines', () => {
+      const oldLines: DiffLine[] = [
+        {
+          content: '-test',
+          type: LineType.DELETE,
+          oldNumber: 1,
+          newNumber: undefined,
+        },
+      ];
+
+      const newLines: DiffLine[] = [
+        {
+          content: '+test1r',
+          type: LineType.INSERT,
+          oldNumber: undefined,
+          newNumber: 1,
+        },
+      ];
+
+      const hoganUtils = new HoganJsUtils({});
+      const sideBySideRenderer = new SideBySideRenderer(hoganUtils, { matching: LineMatchingType.LINES });
+      const html = sideBySideRenderer.processChangedLines(false, oldLines, newLines);
+
+      expect(html).toMatchInlineSnapshot(`
+        {
+          "left": "<tr>
+            <td class="d2h-code-side-linenumber d2h-del d2h-change">
+              1
+            </td>
+            <td class="d2h-del d2h-change">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">-</span>
+                    <span class="d2h-code-line-ctn"><del>test</del></span>
+                </div>
+            </td>
+        </tr>",
+          "right": "<tr>
+            <td class="d2h-code-side-linenumber d2h-ins d2h-change">
+              1
+            </td>
+            <td class="d2h-ins d2h-change">
+                <div class="d2h-code-side-line">
+                    <span class="d2h-code-line-prefix">+</span>
+                    <span class="d2h-code-line-ctn"><ins>test1r</ins></span>
+                </div>
+            </td>
+        </tr>",
+        }
+      `);
+    });
+  });
+});

src/__tests__/utils-tests.ts

@@ -0,0 +1,31 @@
+import { escapeForRegExp, unifyPath, hashCode } from '../utils';
+
+describe('Utils', () => {
+  describe('escapeForRegExp', () => {
+    it('should escape markdown link text', () => {
+      const result = escapeForRegExp('[Link](https://diff2html.xyz)');
+      expect(result).toBe('\\[Link\\]\\(https:\\/\\/diff2html\\.xyz\\)');
+    });
+    it('should escape all dangerous characters', () => {
+      const result = escapeForRegExp('-[]/{}()*+?.\\^$|');
+      expect(result).toBe('\\-\\[\\]\\/\\{\\}\\(\\)\\*\\+\\?\\.\\\\\\^\\$\\|');
+    });
+  });
+
+  describe('unifyPath', () => {
+    it('should unify windows style path', () => {
+      const result = unifyPath('\\Users\\Downloads\\diff.html');
+      expect(result).toBe('/Users/Downloads/diff.html');
+    });
+  });
+
+  describe('hashCode', () => {
+    it('should create consistent hash for a text piece', () => {
+      const string = '/home/diff2html/diff.html';
+      expect(hashCode(string)).toEqual(hashCode(string));
+    });
+    it('should create different hash for different text pieces', () => {
+      expect(hashCode('/home/diff2html/diff1.html')).not.toEqual(hashCode('/home/diff2html/diff2.html'));
+    });
+  });
+});

src/diff-parser.js

@@ -1,223 +0,0 @@
-/*
- *
- * Diff Parser (diff-parser.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  var utils = require('./utils.js').Utils;
-
-  var LINE_TYPE = {
-    INSERTS: 'd2h-ins',
-    DELETES: 'd2h-del',
-    CONTEXT: 'd2h-cntx',
-    INFO: 'd2h-info'
-  };
-
-  function DiffParser() {
-  }
-
-  DiffParser.prototype.LINE_TYPE = LINE_TYPE;
-
-  DiffParser.prototype.generateDiffJson = function(diffInput) {
-    var files = [];
-    var currentFile = null;
-    var currentBlock = null;
-    var oldLine = null;
-    var newLine = null;
-
-    var saveBlock = function() {
-      /* Add previous block(if exists) before start a new file */
-      if (currentBlock) {
-        currentFile.blocks.push(currentBlock);
-        currentBlock = null;
-      }
-    };
-
-    var saveFile = function() {
-      /*
-       * Add previous file(if exists) before start a new one
-       * if it has name (to avoid binary files errors)
-       */
-      if (currentFile && currentFile.newName) {
-        files.push(currentFile);
-        currentFile = null;
-      }
-    };
-
-    var startFile = function() {
-      saveBlock();
-      saveFile();
-
-      /* Create file structure */
-      currentFile = {};
-      currentFile.blocks = [];
-      currentFile.deletedLines = 0;
-      currentFile.addedLines = 0;
-    };
-
-    var startBlock = function(line) {
-      saveBlock();
-
-      var values;
-
-      if (values = /^@@ -(\d+),\d+ \+(\d+),\d+ @@.*/.exec(line)) {
-        currentFile.isCombined = false;
-      } else if (values = /^@@@ -(\d+),\d+ -\d+,\d+ \+(\d+),\d+ @@@.*/.exec(line)) {
-        currentFile.isCombined = true;
-      } else {
-        values = [0, 0];
-        currentFile.isCombined = false;
-      }
-
-      oldLine = values[1];
-      newLine = values[2];
-
-      /* Create block metadata */
-      currentBlock = {};
-      currentBlock.lines = [];
-      currentBlock.oldStartLine = oldLine;
-      currentBlock.newStartLine = newLine;
-      currentBlock.header = line;
-    };
-
-    var createLine = function(line) {
-      var currentLine = {};
-      currentLine.content = line;
-
-      var newLinePrefixes = !currentFile.isCombined ? ['+'] : ['+', ' +'];
-      var delLinePrefixes = !currentFile.isCombined ? ['-'] : ['-', ' -'];
-
-      /* Fill the line data */
-      if (utils.startsWith(line, newLinePrefixes)) {
-        currentFile.addedLines++;
-
-        currentLine.type = LINE_TYPE.INSERTS;
-        currentLine.oldNumber = null;
-        currentLine.newNumber = newLine++;
-
-        currentBlock.lines.push(currentLine);
-
-      } else if (utils.startsWith(line, delLinePrefixes)) {
-        currentFile.deletedLines++;
-
-        currentLine.type = LINE_TYPE.DELETES;
-        currentLine.oldNumber = oldLine++;
-        currentLine.newNumber = null;
-
-        currentBlock.lines.push(currentLine);
-
-      } else {
-        currentLine.type = LINE_TYPE.CONTEXT;
-        currentLine.oldNumber = oldLine++;
-        currentLine.newNumber = newLine++;
-
-        currentBlock.lines.push(currentLine);
-      }
-    };
-
-    var diffLines = diffInput.split('\n');
-    diffLines.forEach(function(line) {
-      // Unmerged paths, and possibly other non-diffable files
-      // https://github.com/scottgonzalez/pretty-diff/issues/11
-      // Also, remove some useless lines
-      if (!line || utils.startsWith(line, '*')) {
-        return;
-      }
-
-      /* Diff */
-      var oldMode = /^old mode (\d{6})/;
-      var newMode = /^new mode (\d{6})/;
-      var deletedFileMode = /^deleted file mode (\d{6})/;
-      var newFileMode = /^new file mode (\d{6})/;
-
-      var copyFrom = /^copy from (.+)/;
-      var copyTo = /^copy to (.+)/;
-
-      var renameFrom = /^rename from (.+)/;
-      var renameTo = /^rename to (.+)/;
-
-      var similarityIndex = /^similarity index (\d+)%/;
-      var dissimilarityIndex = /^dissimilarity index (\d+)%/;
-      var index = /^index ([0-9a-z]+)..([0-9a-z]+) (\d{6})?/;
-
-      /* Combined Diff */
-      var combinedIndex = /^index ([0-9a-z]+),([0-9a-z]+)..([0-9a-z]+)/;
-      var combinedMode = /^mode (\d{6}),(\d{6})..(\d{6})/;
-      var combinedNewFile = /^new file mode (\d{6})/;
-      var combinedDeletedFile = /^deleted file mode (\d{6}),(\d{6})/;
-
-      var values = [];
-      if (utils.startsWith(line, 'diff')) {
-        startFile();
-      } else if (currentFile && !currentFile.oldName && (values = /^--- [aiwco]\/(.+)$/.exec(line))) {
-        currentFile.oldName = values[1];
-        currentFile.language = getExtension(currentFile.oldName, currentFile.language);
-      } else if (currentFile && !currentFile.newName && (values = /^\+\+\+ [biwco]?\/(.+)$/.exec(line))) {
-        currentFile.newName = values[1];
-        currentFile.language = getExtension(currentFile.newName, currentFile.language);
-      } else if (currentFile && utils.startsWith(line, '@@')) {
-        startBlock(line);
-      } else if ((values = oldMode.exec(line))) {
-        currentFile.oldMode = values[1];
-      } else if ((values = newMode.exec(line))) {
-        currentFile.newMode = values[1];
-      } else if ((values = deletedFileMode.exec(line))) {
-        currentFile.deletedFileMode = values[1];
-      } else if ((values = newFileMode.exec(line))) {
-        currentFile.newFileMode = values[1];
-      } else if ((values = copyFrom.exec(line))) {
-        currentFile.oldName = values[1];
-        currentFile.isCopy = true;
-      } else if ((values = copyTo.exec(line))) {
-        currentFile.newName = values[1];
-        currentFile.isCopy = true;
-      } else if ((values = renameFrom.exec(line))) {
-        currentFile.oldName = values[1];
-        currentFile.isRename = true;
-      } else if ((values = renameTo.exec(line))) {
-        currentFile.newName = values[1];
-        currentFile.isRename = true;
-      } else if ((values = similarityIndex.exec(line))) {
-        currentFile.unchangedPercentage = values[1];
-      } else if ((values = dissimilarityIndex.exec(line))) {
-        currentFile.changedPercentage = values[1];
-      } else if ((values = index.exec(line))) {
-        currentFile.checksumBefore = values[1];
-        currentFile.checksumAfter = values[2];
-        values[2] && (currentFile.mode = values[3]);
-      } else if ((values = combinedIndex.exec(line))) {
-        currentFile.checksumBefore = [values[2], values[3]];
-        currentFile.checksumAfter = values[1];
-      } else if ((values = combinedMode.exec(line))) {
-        currentFile.oldMode = [values[2], values[3]];
-        currentFile.newMode = values[1];
-      } else if ((values = combinedNewFile.exec(line))) {
-        currentFile.newFileMode = values[1];
-      } else if ((values = combinedDeletedFile.exec(line))) {
-        currentFile.deletedFileMode = values[1];
-      } else if (currentBlock) {
-        createLine(line);
-      }
-    });
-
-    saveBlock();
-    saveFile();
-
-    return files;
-  };
-
-  function getExtension(filename, language) {
-    var nameSplit = filename.split('.');
-    if (nameSplit.length > 1) {
-      return nameSplit[nameSplit.length - 1];
-    } else {
-      return language;
-    }
-  }
-
-  module.exports['DiffParser'] = new DiffParser();
-
-})(this);

src/diff-parser.ts

@@ -0,0 +1,481 @@
+import { DiffFile, DiffBlock, DiffLine, LineType } from './types';
+import { escapeForRegExp } from './utils';
+
+export interface DiffParserConfig {
+  srcPrefix?: string;
+  dstPrefix?: string;
+  diffMaxChanges?: number;
+  diffMaxLineLength?: number;
+  diffTooBigMessage?: (fileIndex: number) => string;
+}
+
+function getExtension(filename: string, language: string): string {
+  const filenameParts = filename.split('.');
+  return filenameParts.length > 1 ? filenameParts[filenameParts.length - 1] : language;
+}
+
+function startsWithAny(str: string, prefixes: string[]): boolean {
+  return prefixes.reduce<boolean>((startsWith, prefix) => startsWith || str.startsWith(prefix), false);
+}
+
+const baseDiffFilenamePrefixes = ['a/', 'b/', 'i/', 'w/', 'c/', 'o/'];
+function getFilename(line: string, linePrefix?: string, extraPrefix?: string): string {
+  const prefixes = extraPrefix !== undefined ? [...baseDiffFilenamePrefixes, extraPrefix] : baseDiffFilenamePrefixes;
+
+  const FilenameRegExp = linePrefix
+    ? new RegExp(`^${escapeForRegExp(linePrefix)} "?(.+?)"?$`)
+    : new RegExp('^"?(.+?)"?$');
+
+  const [, filename = ''] = FilenameRegExp.exec(line) || [];
+  const matchingPrefix = prefixes.find(p => filename.indexOf(p) === 0);
+  const fnameWithoutPrefix = matchingPrefix ? filename.slice(matchingPrefix.length) : filename;
+
+  // Cleanup timestamps generated by the unified diff (diff command) as specified in
+  // https://www.gnu.org/software/diffutils/manual/html_node/Detailed-Unified.html
+  // Ie: 2016-10-25 11:37:14.000000000 +0200
+  return fnameWithoutPrefix.replace(/\s+\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}(?:\.\d+)? [+-]\d{4}.*$/, '');
+}
+
+function getSrcFilename(line: string, srcPrefix?: string): string | undefined {
+  return getFilename(line, '---', srcPrefix);
+}
+
+function getDstFilename(line: string, dstPrefix?: string): string | undefined {
+  return getFilename(line, '+++', dstPrefix);
+}
+
+/**
+ *
+ * Docs:
+ *   - Unified: https://www.gnu.org/software/diffutils/manual/html_node/Unified-Format.html
+ *   - Git Diff: https://git-scm.com/docs/git-diff-tree#_raw_output_format
+ *   - Git Combined Diff: https://git-scm.com/docs/git-diff-tree#_combined_diff_format
+ *
+ */
+export function parse(diffInput: string, config: DiffParserConfig = {}): DiffFile[] {
+  const files: DiffFile[] = [];
+  let currentFile: DiffFile | null = null;
+  let currentBlock: DiffBlock | null = null;
+  let oldLine: number | null = null;
+  let oldLine2: number | null = null; // Used for combined diff
+  let newLine: number | null = null;
+
+  let possibleOldName: string | null = null;
+  let possibleNewName: string | null = null;
+
+  /* Diff Header */
+  const oldFileNameHeader = '--- ';
+  const newFileNameHeader = '+++ ';
+  const hunkHeaderPrefix = '@@';
+
+  /* Diff */
+  const oldMode = /^old mode (\d{6})/;
+  const newMode = /^new mode (\d{6})/;
+  const deletedFileMode = /^deleted file mode (\d{6})/;
+  const newFileMode = /^new file mode (\d{6})/;
+
+  const copyFrom = /^copy from "?(.+)"?/;
+  const copyTo = /^copy to "?(.+)"?/;
+
+  const renameFrom = /^rename from "?(.+)"?/;
+  const renameTo = /^rename to "?(.+)"?/;
+
+  const similarityIndex = /^similarity index (\d+)%/;
+  const dissimilarityIndex = /^dissimilarity index (\d+)%/;
+  const index = /^index ([\da-z]+)\.\.([\da-z]+)\s*(\d{6})?/;
+
+  const binaryFiles = /^Binary files (.*) and (.*) differ/;
+  const binaryDiff = /^GIT binary patch/;
+
+  /* Combined Diff */
+  const combinedIndex = /^index ([\da-z]+),([\da-z]+)\.\.([\da-z]+)/;
+  const combinedMode = /^mode (\d{6}),(\d{6})\.\.(\d{6})/;
+  const combinedNewFile = /^new file mode (\d{6})/;
+  const combinedDeletedFile = /^deleted file mode (\d{6}),(\d{6})/;
+
+  const diffLines = diffInput
+    .replace(/\\ No newline at end of file/g, '')
+    .replace(/\r\n?/g, '\n')
+    .split('\n');
+
+  /* Add previous block(if exists) before start a new file */
+  function saveBlock(): void {
+    if (currentBlock !== null && currentFile !== null) {
+      currentFile.blocks.push(currentBlock);
+      currentBlock = null;
+    }
+  }
+
+  /*
+   * Add previous file(if exists) before start a new one
+   * if it has name (to avoid binary files errors)
+   */
+  function saveFile(): void {
+    if (currentFile !== null) {
+      if (!currentFile.oldName && possibleOldName !== null) {
+        currentFile.oldName = possibleOldName;
+      }
+
+      if (!currentFile.newName && possibleNewName !== null) {
+        currentFile.newName = possibleNewName;
+      }
+
+      if (currentFile.newName) {
+        files.push(currentFile);
+        currentFile = null;
+      }
+    }
+
+    possibleOldName = null;
+    possibleNewName = null;
+  }
+
+  /* Create file structure */
+  function startFile(): void {
+    saveBlock();
+    saveFile();
+
+    // eslint-disable-next-line
+    // @ts-ignore
+    currentFile = {
+      blocks: [],
+      deletedLines: 0,
+      addedLines: 0,
+    };
+  }
+
+  function startBlock(line: string): void {
+    saveBlock();
+
+    let values;
+
+    /**
+     * From Range:
+     * -<start line>[,<number of lines>]
+     *
+     * To Range:
+     * +<start line>[,<number of lines>]
+     *
+     * @@ from-file-range to-file-range @@
+     *
+     * @@@ from-file-range from-file-range to-file-range @@@
+     *
+     * number of lines is optional, if omited consider 0
+     */
+
+    if (currentFile !== null) {
+      if ((values = /^@@ -(\d+)(?:,\d+)? \+(\d+)(?:,\d+)? @@.*/.exec(line))) {
+        currentFile.isCombined = false;
+        oldLine = parseInt(values[1], 10);
+        newLine = parseInt(values[2], 10);
+      } else if ((values = /^@@@ -(\d+)(?:,\d+)? -(\d+)(?:,\d+)? \+(\d+)(?:,\d+)? @@@.*/.exec(line))) {
+        currentFile.isCombined = true;
+        oldLine = parseInt(values[1], 10);
+        oldLine2 = parseInt(values[2], 10);
+        newLine = parseInt(values[3], 10);
+      } else {
+        if (line.startsWith(hunkHeaderPrefix)) {
+          console.error('Failed to parse lines, starting in 0!');
+        }
+
+        oldLine = 0;
+        newLine = 0;
+        currentFile.isCombined = false;
+      }
+    }
+
+    /* Create block metadata */
+    currentBlock = {
+      lines: [],
+      // eslint-disable-next-line
+      // @ts-ignore
+      oldStartLine: oldLine,
+      // eslint-disable-next-line
+      // @ts-ignore
+      oldStartLine2: oldLine2,
+      // eslint-disable-next-line
+      // @ts-ignore
+      newStartLine: newLine,
+      header: line,
+    };
+  }
+
+  function createLine(line: string): void {
+    if (currentFile === null || currentBlock === null || oldLine === null || newLine === null) return;
+
+    // eslint-disable-next-line
+    // @ts-ignore
+    const currentLine: DiffLine = {
+      content: line,
+    };
+
+    const addedPrefixes = currentFile.isCombined ? ['+ ', ' +', '++'] : ['+'];
+    const deletedPrefixes = currentFile.isCombined ? ['- ', ' -', '--'] : ['-'];
+
+    if (startsWithAny(line, addedPrefixes)) {
+      currentFile.addedLines++;
+      currentLine.type = LineType.INSERT;
+      currentLine.oldNumber = undefined;
+      currentLine.newNumber = newLine++;
+    } else if (startsWithAny(line, deletedPrefixes)) {
+      currentFile.deletedLines++;
+      currentLine.type = LineType.DELETE;
+      currentLine.oldNumber = oldLine++;
+      currentLine.newNumber = undefined;
+    } else {
+      currentLine.type = LineType.CONTEXT;
+      currentLine.oldNumber = oldLine++;
+      currentLine.newNumber = newLine++;
+    }
+    currentBlock.lines.push(currentLine);
+  }
+
+  /*
+   * Checks if there is a hunk header coming before a new file starts
+   *
+   * Hunk header is a group of three lines started by ( `--- ` , `+++ ` , `@@` )
+   */
+  function existHunkHeader(line: string, lineIdx: number): boolean {
+    let idx = lineIdx;
+
+    while (idx < diffLines.length - 3) {
+      if (line.startsWith('diff')) {
+        return false;
+      }
+
+      if (
+        diffLines[idx].startsWith(oldFileNameHeader) &&
+        diffLines[idx + 1].startsWith(newFileNameHeader) &&
+        diffLines[idx + 2].startsWith(hunkHeaderPrefix)
+      ) {
+        return true;
+      }
+
+      idx++;
+    }
+
+    return false;
+  }
+
+  diffLines.forEach((line, lineIndex) => {
+    // Unmerged paths, and possibly other non-diffable files
+    // https://github.com/scottgonzalez/pretty-diff/issues/11
+    // Also, remove some useless lines
+    if (!line || line.startsWith('*')) {
+      return;
+    }
+
+    // Used to store regex capture groups
+    let values;
+
+    const prevLine = diffLines[lineIndex - 1];
+    const nxtLine = diffLines[lineIndex + 1];
+    const afterNxtLine = diffLines[lineIndex + 2];
+
+    if (line.startsWith('diff --git') || line.startsWith('diff --combined')) {
+      startFile();
+
+      // diff --git a/blocked_delta_results.png b/blocked_delta_results.png
+      const gitDiffStart = /^diff --git "?([a-ciow]\/.+)"? "?([a-ciow]\/.+)"?/;
+      if ((values = gitDiffStart.exec(line))) {
+        possibleOldName = getFilename(values[1], undefined, config.dstPrefix);
+        possibleNewName = getFilename(values[2], undefined, config.srcPrefix);
+      }
+
+      if (currentFile === null) {
+        throw new Error('Where is my file !!!');
+      }
+
+      currentFile.isGitDiff = true;
+      return;
+    }
+
+    if (line.startsWith('Binary files') && !currentFile?.isGitDiff) {
+      startFile();
+      const unixDiffBinaryStart = /^Binary files "?([a-ciow]\/.+)"? and "?([a-ciow]\/.+)"? differ/;
+      if ((values = unixDiffBinaryStart.exec(line))) {
+        possibleOldName = getFilename(values[1], undefined, config.dstPrefix);
+        possibleNewName = getFilename(values[2], undefined, config.srcPrefix);
+      }
+
+      if (currentFile === null) {
+        throw new Error('Where is my file !!!');
+      }
+
+      currentFile.isBinary = true;
+      return;
+    }
+
+    if (
+      !currentFile || // If we do not have a file yet, we should crete one
+      (!currentFile.isGitDiff &&
+        currentFile && // If we already have some file in progress and
+        line.startsWith(oldFileNameHeader) && // If we get to an old file path header line
+        // And is followed by the new file path header line and the hunk header line
+        nxtLine.startsWith(newFileNameHeader) &&
+        afterNxtLine.startsWith(hunkHeaderPrefix))
+    ) {
+      startFile();
+    }
+
+    // Ignore remaining diff for current file if marked as too big
+    if (currentFile?.isTooBig) {
+      return;
+    }
+
+    if (
+      currentFile &&
+      ((typeof config.diffMaxChanges === 'number' &&
+        currentFile.addedLines + currentFile.deletedLines > config.diffMaxChanges) ||
+        (typeof config.diffMaxLineLength === 'number' && line.length > config.diffMaxLineLength))
+    ) {
+      currentFile.isTooBig = true;
+      currentFile.addedLines = 0;
+      currentFile.deletedLines = 0;
+      currentFile.blocks = [];
+      currentBlock = null;
+
+      const message =
+        typeof config.diffTooBigMessage === 'function'
+          ? config.diffTooBigMessage(files.length)
+          : 'Diff too big to be displayed';
+      startBlock(message);
+      return;
+    }
+
+    /*
+     * We need to make sure that we have the three lines of the header.
+     * This avoids cases like the ones described in:
+     *   - https://github.com/rtfpessoa/diff2html/issues/87
+     */
+    if (
+      (line.startsWith(oldFileNameHeader) && nxtLine.startsWith(newFileNameHeader)) ||
+      (line.startsWith(newFileNameHeader) && prevLine.startsWith(oldFileNameHeader))
+    ) {
+      /*
+       * --- Date Timestamp[FractionalSeconds] TimeZone
+       * --- 2002-02-21 23:30:39.942229878 -0800
+       */
+      if (
+        currentFile &&
+        !currentFile.oldName &&
+        line.startsWith('--- ') &&
+        (values = getSrcFilename(line, config.srcPrefix))
+      ) {
+        currentFile.oldName = values;
+        currentFile.language = getExtension(currentFile.oldName, currentFile.language);
+        return;
+      }
+
+      /*
+       * +++ Date Timestamp[FractionalSeconds] TimeZone
+       * +++ 2002-02-21 23:30:39.942229878 -0800
+       */
+      if (
+        currentFile &&
+        !currentFile.newName &&
+        line.startsWith('+++ ') &&
+        (values = getDstFilename(line, config.dstPrefix))
+      ) {
+        currentFile.newName = values;
+        currentFile.language = getExtension(currentFile.newName, currentFile.language);
+        return;
+      }
+    }
+
+    if (
+      currentFile &&
+      (line.startsWith(hunkHeaderPrefix) ||
+        (currentFile.isGitDiff && currentFile.oldName && currentFile.newName && !currentBlock))
+    ) {
+      startBlock(line);
+      return;
+    }
+
+    /*
+     * There are three types of diff lines. These lines are defined by the way they start.
+     * 1. New line     starts with: +
+     * 2. Old line     starts with: -
+     * 3. Context line starts with: <SPACE>
+     */
+    if (currentBlock && (line.startsWith('+') || line.startsWith('-') || line.startsWith(' '))) {
+      createLine(line);
+      return;
+    }
+
+    const doesNotExistHunkHeader = !existHunkHeader(line, lineIndex);
+
+    if (currentFile === null) {
+      throw new Error('Where is my file !!!');
+    }
+
+    /*
+     * Git diffs provide more information regarding files modes, renames, copies,
+     * commits between changes and similarity indexes
+     */
+    if ((values = oldMode.exec(line))) {
+      currentFile.oldMode = values[1];
+    } else if ((values = newMode.exec(line))) {
+      currentFile.newMode = values[1];
+    } else if ((values = deletedFileMode.exec(line))) {
+      currentFile.deletedFileMode = values[1];
+      currentFile.isDeleted = true;
+    } else if ((values = newFileMode.exec(line))) {
+      currentFile.newFileMode = values[1];
+      currentFile.isNew = true;
+    } else if ((values = copyFrom.exec(line))) {
+      if (doesNotExistHunkHeader) {
+        currentFile.oldName = values[1];
+      }
+      currentFile.isCopy = true;
+    } else if ((values = copyTo.exec(line))) {
+      if (doesNotExistHunkHeader) {
+        currentFile.newName = values[1];
+      }
+      currentFile.isCopy = true;
+    } else if ((values = renameFrom.exec(line))) {
+      if (doesNotExistHunkHeader) {
+        currentFile.oldName = values[1];
+      }
+      currentFile.isRename = true;
+    } else if ((values = renameTo.exec(line))) {
+      if (doesNotExistHunkHeader) {
+        currentFile.newName = values[1];
+      }
+      currentFile.isRename = true;
+    } else if ((values = binaryFiles.exec(line))) {
+      currentFile.isBinary = true;
+      currentFile.oldName = getFilename(values[1], undefined, config.srcPrefix);
+      currentFile.newName = getFilename(values[2], undefined, config.dstPrefix);
+      startBlock('Binary file');
+    } else if (binaryDiff.test(line)) {
+      currentFile.isBinary = true;
+      startBlock(line);
+    } else if ((values = similarityIndex.exec(line))) {
+      currentFile.unchangedPercentage = parseInt(values[1], 10);
+    } else if ((values = dissimilarityIndex.exec(line))) {
+      currentFile.changedPercentage = parseInt(values[1], 10);
+    } else if ((values = index.exec(line))) {
+      currentFile.checksumBefore = values[1];
+      currentFile.checksumAfter = values[2];
+      if (values[3]) currentFile.mode = values[3];
+    } else if ((values = combinedIndex.exec(line))) {
+      currentFile.checksumBefore = [values[2], values[3]];
+      currentFile.checksumAfter = values[1];
+    } else if ((values = combinedMode.exec(line))) {
+      currentFile.oldMode = [values[2], values[3]];
+      currentFile.newMode = values[1];
+    } else if ((values = combinedNewFile.exec(line))) {
+      currentFile.newFileMode = values[1];
+      currentFile.isNew = true;
+    } else if ((values = combinedDeletedFile.exec(line))) {
+      currentFile.deletedFileMode = values[1];
+      currentFile.isDeleted = true;
+    }
+  });
+
+  saveBlock();
+  saveFile();
+
+  return files;
+}

src/diff2html.js

@@ -1,110 +0,0 @@
-/*
- *
- * Diff to HTML (diff2html.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  var diffParser = require('./diff-parser.js').DiffParser;
-  var fileLister = require('./file-list-printer.js').FileListPrinter;
-  var htmlPrinter = require('./html-printer.js').HtmlPrinter;
-
-  function Diff2Html() {
-  }
-
-  /*
-   * Line diff type configuration
-   var config = {
-   "wordByWord": true, // (default)
-   // OR
-   "charByChar": true
-   };
-   */
-
-  /*
-   * Generates json object from string diff input
-   */
-  Diff2Html.prototype.getJsonFromDiff = function(diffInput) {
-    return diffParser.generateDiffJson(diffInput);
-  };
-
-  /*
-   * Generates the html diff. The config parameter configures the output/input formats and other options
-   */
-  Diff2Html.prototype.getPrettyHtml = function(diffInput, config) {
-    var configOrEmpty = config || {};
-
-    var diffJson = diffInput;
-    if(!configOrEmpty.inputFormat || configOrEmpty.inputFormat === 'diff') {
-      diffJson = diffParser.generateDiffJson(diffInput);
-    }
-
-    var fileList = "";
-    if(configOrEmpty.showFiles === true) {
-      fileList = fileLister.generateFileList(diffJson, configOrEmpty);
-    }
-
-    var diffOutput = "";
-    if(configOrEmpty.outputFormat === 'side-by-side') {
-      diffOutput = htmlPrinter.generateSideBySideJsonHtml(diffJson, configOrEmpty);
-    } else {
-      diffOutput = htmlPrinter.generateLineByLineJsonHtml(diffJson, configOrEmpty);
-    }
-
-    return fileList + diffOutput
-  };
-
-
-  /*
-   * Deprecated methods - The following methods exist only to maintain compatibility with previous versions
-   */
-
-  /*
-   * Generates pretty html from string diff input
-   */
-  Diff2Html.prototype.getPrettyHtmlFromDiff = function(diffInput, config) {
-    var configOrEmpty = config || {};
-    configOrEmpty['inputFormat'] = 'diff';
-    configOrEmpty['outputFormat'] = 'line-by-line';
-    return this.getPrettyHtml(diffInput, configOrEmpty)
-  };
-
-  /*
-   * Generates pretty html from a json object
-   */
-  Diff2Html.prototype.getPrettyHtmlFromJson = function(diffJson, config) {
-    var configOrEmpty = config || {};
-    configOrEmpty['inputFormat'] = 'json';
-    configOrEmpty['outputFormat'] = 'line-by-line';
-    return this.getPrettyHtml(diffJson, configOrEmpty)
-  };
-
-  /*
-   * Generates pretty side by side html from string diff input
-   */
-  Diff2Html.prototype.getPrettySideBySideHtmlFromDiff = function(diffInput, config) {
-    var configOrEmpty = config || {};
-    configOrEmpty['inputFormat'] = 'diff';
-    configOrEmpty['outputFormat'] = 'side-by-side';
-    return this.getPrettyHtml(diffInput, configOrEmpty)
-  };
-
-  /*
-   * Generates pretty side by side html from a json object
-   */
-  Diff2Html.prototype.getPrettySideBySideHtmlFromJson = function(diffJson, config) {
-    var configOrEmpty = config || {};
-    configOrEmpty['inputFormat'] = 'json';
-    configOrEmpty['outputFormat'] = 'side-by-side';
-    return this.getPrettyHtml(diffJson, configOrEmpty)
-  };
-
-  var diffName = 'Diff2Html';
-  var diffObject = new Diff2Html();
-  module.exports[diffName] = diffObject;
-  // Expose diff2html in the browser
-  global[diffName] = diffObject;
-
-})(this);

src/diff2html.ts

@@ -0,0 +1,46 @@
+import * as DiffParser from './diff-parser';
+import { FileListRenderer } from './file-list-renderer';
+import LineByLineRenderer, { LineByLineRendererConfig, defaultLineByLineRendererConfig } from './line-by-line-renderer';
+import SideBySideRenderer, { SideBySideRendererConfig, defaultSideBySideRendererConfig } from './side-by-side-renderer';
+import { DiffFile, OutputFormatType } from './types';
+import HoganJsUtils, { HoganJsUtilsConfig } from './hoganjs-utils';
+
+export interface Diff2HtmlConfig
+  extends DiffParser.DiffParserConfig,
+    LineByLineRendererConfig,
+    SideBySideRendererConfig,
+    HoganJsUtilsConfig {
+  outputFormat?: OutputFormatType;
+  drawFileList?: boolean;
+}
+
+export const defaultDiff2HtmlConfig = {
+  ...defaultLineByLineRendererConfig,
+  ...defaultSideBySideRendererConfig,
+  outputFormat: OutputFormatType.LINE_BY_LINE,
+  drawFileList: true,
+};
+
+export function parse(diffInput: string, configuration: Diff2HtmlConfig = {}): DiffFile[] {
+  return DiffParser.parse(diffInput, { ...defaultDiff2HtmlConfig, ...configuration });
+}
+
+export function html(diffInput: string | DiffFile[], configuration: Diff2HtmlConfig = {}): string {
+  const config = { ...defaultDiff2HtmlConfig, ...configuration };
+
+  const diffJson = typeof diffInput === 'string' ? DiffParser.parse(diffInput, config) : diffInput;
+
+  const hoganUtils = new HoganJsUtils(config);
+
+  const { colorScheme } = config;
+  const fileListRendererConfig = { colorScheme };
+
+  const fileList = config.drawFileList ? new FileListRenderer(hoganUtils, fileListRendererConfig).render(diffJson) : '';
+
+  const diffOutput =
+    config.outputFormat === 'side-by-side'
+      ? new SideBySideRenderer(hoganUtils, config).render(diffJson)
+      : new LineByLineRenderer(hoganUtils, config).render(diffJson);
+
+  return fileList + diffOutput;
+}

src/file-list-printer.js

@@ -1,41 +0,0 @@
-/*
- *
- * FileListPrinter (file-list-printer.js)
- * Author: nmatpt
- *
- */
-
-(function (ctx, undefined) {
-
-    var printerUtils = require('./printer-utils.js').PrinterUtils;
-    var utils = require('./utils.js').Utils;
-
-    function FileListPrinter() {
-    }
-
-    FileListPrinter.prototype.generateFileList = function (diffFiles) {
-        var hideId = utils.getRandomId("d2h-hide"); //necessary if there are 2 elements like this in the same page
-        var showId = utils.getRandomId("d2h-show");
-        return '<div class="d2h-file-list-wrapper">\n' +
-            '     <div class="d2h-file-list-header">Files changed (' + diffFiles.length + ')&nbsp&nbsp</div>\n' +
-            '     <a id="' + hideId + '" class="d2h-hide" href="#' + hideId + '">+</a>\n' +
-            '     <a id="' + showId + 'd2h-show" class="d2h-show" href="#' + showId + '">-</a>\n' +
-            '     <div class="d2h-clear"></div>\n' +
-            '     <div class="d2h-file-list">\n' +
-
-
-            diffFiles.map(function (file) {
-                return '     <div class="d2h-file-list-line">\n' +
-                    '       <div class="d2h-file-stats">\n' +
-                    '         <span class="d2h-lines-added">+' + file.addedLines + '</span>\n' +
-                    '         <span class="d2h-lines-deleted">-' + file.deletedLines + '</span>\n' +
-                    '       </div>\n' +
-                    '       <div class="d2h-file-name"><a href="#' + printerUtils.getHtmlId(file) + '">&nbsp;' + printerUtils.getDiffName(file) + '</a></div>\n' +
-                    '     </div>\n'
-            }).join('\n') +
-            '</div></div>\n';
-    };
-
-    module.exports['FileListPrinter'] = new FileListPrinter();
-
-})(this);

src/file-list-renderer.ts

@@ -0,0 +1,52 @@
+import * as renderUtils from './render-utils';
+import HoganJsUtils from './hoganjs-utils';
+import { ColorSchemeType, DiffFile } from './types';
+
+const baseTemplatesPath = 'file-summary';
+const iconsBaseTemplatesPath = 'icon';
+
+export interface FileListRendererConfig {
+  colorScheme?: ColorSchemeType;
+}
+
+export const defaultFileListRendererConfig = {
+  colorScheme: renderUtils.defaultRenderConfig.colorScheme,
+};
+
+export class FileListRenderer {
+  private readonly hoganUtils: HoganJsUtils;
+  private readonly config: typeof defaultFileListRendererConfig;
+
+  constructor(hoganUtils: HoganJsUtils, config: FileListRendererConfig = {}) {
+    this.hoganUtils = hoganUtils;
+    this.config = { ...defaultFileListRendererConfig, ...config };
+  }
+
+  render(diffFiles: DiffFile[]): string {
+    const files = diffFiles
+      .map(file =>
+        this.hoganUtils.render(
+          baseTemplatesPath,
+          'line',
+          {
+            fileHtmlId: renderUtils.getHtmlId(file),
+            oldName: file.oldName,
+            newName: file.newName,
+            fileName: renderUtils.filenameDiff(file),
+            deletedLines: '-' + file.deletedLines,
+            addedLines: '+' + file.addedLines,
+          },
+          {
+            fileIcon: this.hoganUtils.template(iconsBaseTemplatesPath, renderUtils.getFileIcon(file)),
+          },
+        ),
+      )
+      .join('\n');
+
+    return this.hoganUtils.render(baseTemplatesPath, 'wrapper', {
+      colorScheme: renderUtils.colorSchemeToCss(this.config.colorScheme),
+      filesNumber: diffFiles.length,
+      files: files,
+    });
+  }
+}

src/hoganjs-utils.ts

@@ -0,0 +1,54 @@
+import * as Hogan from 'hogan.js';
+
+import { defaultTemplates } from './diff2html-templates';
+
+export interface RawTemplates {
+  [name: string]: string;
+}
+
+export interface CompiledTemplates {
+  [name: string]: Hogan.Template;
+}
+
+export interface HoganJsUtilsConfig {
+  compiledTemplates?: CompiledTemplates;
+  rawTemplates?: RawTemplates;
+}
+
+export default class HoganJsUtils {
+  private preCompiledTemplates: CompiledTemplates;
+
+  constructor({ compiledTemplates = {}, rawTemplates = {} }: HoganJsUtilsConfig) {
+    const compiledRawTemplates = Object.entries(rawTemplates).reduce<CompiledTemplates>(
+      (previousTemplates, [name, templateString]) => {
+        const compiledTemplate: Hogan.Template = Hogan.compile(templateString, { asString: false });
+        return { ...previousTemplates, [name]: compiledTemplate };
+      },
+      {},
+    );
+
+    this.preCompiledTemplates = { ...defaultTemplates, ...compiledTemplates, ...compiledRawTemplates };
+  }
+
+  static compile(templateString: string): Hogan.Template {
+    return Hogan.compile(templateString, { asString: false });
+  }
+
+  render(namespace: string, view: string, params: Hogan.Context, partials?: Hogan.Partials, indent?: string): string {
+    const templateKey = this.templateKey(namespace, view);
+    try {
+      const template = this.preCompiledTemplates[templateKey];
+      return template.render(params, partials, indent);
+    } catch (_e) {
+      throw new Error(`Could not find template to render '${templateKey}'`);
+    }
+  }
+
+  template(namespace: string, view: string): Hogan.Template {
+    return this.preCompiledTemplates[this.templateKey(namespace, view)];
+  }
+
+  private templateKey(namespace: string, view: string): string {
+    return `${namespace}-${view}`;
+  }
+}

src/html-printer.js

@@ -1,22 +0,0 @@
-/*
- *
- * HtmlPrinter (html-printer.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  var lineByLinePrinter = require('./line-by-line-printer.js').LineByLinePrinter;
-  var sideBySidePrinter = require('./side-by-side-printer.js').SideBySidePrinter;
-
-  function HtmlPrinter() {
-  }
-
-  HtmlPrinter.prototype.generateLineByLineJsonHtml = lineByLinePrinter.generateLineByLineJsonHtml;
-
-  HtmlPrinter.prototype.generateSideBySideJsonHtml = sideBySidePrinter.generateSideBySideJsonHtml;
-
-  module.exports['HtmlPrinter'] = new HtmlPrinter();
-
-})(this);

src/line-by-line-printer.js

@@ -1,168 +0,0 @@
-/*
- *
- * LineByLinePrinter (line-by-line-printer.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  var diffParser = require('./diff-parser.js').DiffParser;
-  var printerUtils = require('./printer-utils.js').PrinterUtils;
-  var utils = require('./utils.js').Utils;
-
-  function LineByLinePrinter() {
-  }
-
-  LineByLinePrinter.prototype.generateLineByLineJsonHtml = function(diffFiles, config) {
-    return '<div class="d2h-wrapper">\n' +
-      diffFiles.map(function(file) {
-
-        var diffs;
-        if (file.blocks.length) {
-          diffs = generateFileHtml(file, config);
-        } else {
-          diffs = generateEmptyDiff();
-        }
-
-        return '<div id="' + printerUtils.getHtmlId(file) + '" class="d2h-file-wrapper" data-lang="' + file.language + '">\n' +
-          '     <div class="d2h-file-header">\n' +
-          '       <div class="d2h-file-stats">\n' +
-          '         <span class="d2h-lines-added">+' + file.addedLines + '</span>\n' +
-          '         <span class="d2h-lines-deleted">-' + file.deletedLines + '</span>\n' +
-          '       </div>\n' +
-          '       <div class="d2h-file-name">' + printerUtils.getDiffName(file) + '</div>\n' +
-          '     </div>\n' +
-          '     <div class="d2h-file-diff">\n' +
-          '       <div class="d2h-code-wrapper">\n' +
-          '         <table class="d2h-diff-table">\n' +
-          '           <tbody class="d2h-diff-tbody">\n' +
-          '         ' + diffs +
-          '           </tbody>\n' +
-          '         </table>\n' +
-          '       </div>\n' +
-          '     </div>\n' +
-          '   </div>\n';
-      }).join('\n') +
-      '</div>\n';
-  };
-
-  function generateFileHtml(file, config) {
-    return file.blocks.map(function(block) {
-
-      var lines = '<tr>\n' +
-        '  <td class="d2h-code-linenumber ' + diffParser.LINE_TYPE.INFO + '"></td>\n' +
-        '  <td class="' + diffParser.LINE_TYPE.INFO + '">' +
-        '    <div class="d2h-code-line ' + diffParser.LINE_TYPE.INFO + '">' + utils.escape(block.header) + '</div>' +
-        '  </td>\n' +
-        '</tr>\n';
-
-      var oldLines = [];
-      var newLines = [];
-      var processedOldLines = [];
-      var processedNewLines = [];
-
-      for (var i = 0; i < block.lines.length; i++) {
-        var line = block.lines[i];
-        var escapedLine = utils.escape(line.content);
-
-        if (line.type == diffParser.LINE_TYPE.CONTEXT && !oldLines.length && !newLines.length) {
-          lines += generateLineHtml(line.type, line.oldNumber, line.newNumber, escapedLine);
-        } else if (line.type == diffParser.LINE_TYPE.INSERTS && !oldLines.length && !newLines.length) {
-          lines += generateLineHtml(line.type, line.oldNumber, line.newNumber, escapedLine);
-        } else if (line.type == diffParser.LINE_TYPE.DELETES && !newLines.length) {
-          oldLines.push(line);
-        } else if (line.type == diffParser.LINE_TYPE.INSERTS && oldLines.length > newLines.length) {
-          newLines.push(line);
-        } else {
-          var j = 0;
-          var oldLine, newLine;
-
-          if (oldLines.length === newLines.length) {
-            for (j = 0; j < oldLines.length; j++) {
-              oldLine = oldLines[j];
-              newLine = newLines[j];
-
-              config.isCombined = file.isCombined;
-              var diff = printerUtils.diffHighlight(oldLine.content, newLine.content, config);
-
-              processedOldLines +=
-                generateLineHtml(oldLine.type, oldLine.oldNumber, oldLine.newNumber,
-                  diff.first.line, diff.first.prefix);
-              processedNewLines +=
-                generateLineHtml(newLine.type, newLine.oldNumber, newLine.newNumber,
-                  diff.second.line, diff.second.prefix);
-            }
-
-            lines += processedOldLines + processedNewLines;
-          } else {
-            lines += processLines(oldLines, newLines);
-          }
-
-          oldLines = [];
-          newLines = [];
-          processedOldLines = [];
-          processedNewLines = [];
-          i--;
-        }
-      }
-
-      lines += processLines(oldLines, newLines);
-
-      return lines;
-    }).join('\n');
-  }
-
-  function processLines(oldLines, newLines) {
-    var lines = '';
-
-    for (j = 0; j < oldLines.length; j++) {
-      var oldLine = oldLines[j];
-      var oldEscapedLine = utils.escape(oldLine.content);
-      lines += generateLineHtml(oldLine.type, oldLine.oldNumber, oldLine.newNumber, oldEscapedLine);
-    }
-
-    for (j = 0; j < newLines.length; j++) {
-      var newLine = newLines[j];
-      var newEscapedLine = utils.escape(newLine.content);
-      lines += generateLineHtml(newLine.type, newLine.oldNumber, newLine.newNumber, newEscapedLine);
-    }
-
-    return lines;
-  }
-
-  function generateLineHtml(type, oldNumber, newNumber, content, prefix) {
-    var htmlPrefix = '';
-    if (prefix) {
-      htmlPrefix = '<span class="d2h-code-line-prefix">' + prefix + '</span>';
-    }
-
-    var htmlContent = '';
-    if (content) {
-      htmlContent = '<span class="d2h-code-line-ctn">' + content + '</span>';
-    }
-
-    return '<tr>\n' +
-      '  <td class="d2h-code-linenumber ' + type + '">' +
-      '    <div class="line-num1">' + utils.valueOrEmpty(oldNumber) + '</div>' +
-      '    <div class="line-num2">' + utils.valueOrEmpty(newNumber) + '</div>' +
-      '  </td>\n' +
-      '  <td class="' + type + '">' +
-      '    <div class="d2h-code-line ' + type + '">' + htmlPrefix + htmlContent + '</div>' +
-      '  </td>\n' +
-      '</tr>\n';
-  }
-
-  function generateEmptyDiff() {
-    return '<tr>\n' +
-      '  <td class="' + diffParser.LINE_TYPE.INFO + '">' +
-      '    <div class="d2h-code-line ' + diffParser.LINE_TYPE.INFO + '">' +
-      'File without changes' +
-      '    </div>' +
-      '  </td>\n' +
-      '</tr>\n';
-  }
-
-  module.exports['LineByLinePrinter'] = new LineByLinePrinter();
-
-})(this);

src/line-by-line-renderer.ts

@@ -0,0 +1,299 @@
+import HoganJsUtils from './hoganjs-utils';
+import * as Rematch from './rematch';
+import * as renderUtils from './render-utils';
+import {
+  DiffFile,
+  DiffLine,
+  LineType,
+  DiffBlock,
+  DiffLineDeleted,
+  DiffLineContent,
+  DiffLineContext,
+  DiffLineInserted,
+} from './types';
+
+export interface LineByLineRendererConfig extends renderUtils.RenderConfig {
+  renderNothingWhenEmpty?: boolean;
+  matchingMaxComparisons?: number;
+  maxLineSizeInBlockForComparison?: number;
+}
+
+export const defaultLineByLineRendererConfig = {
+  ...renderUtils.defaultRenderConfig,
+  renderNothingWhenEmpty: false,
+  matchingMaxComparisons: 2500,
+  maxLineSizeInBlockForComparison: 200,
+};
+
+const genericTemplatesPath = 'generic';
+const baseTemplatesPath = 'line-by-line';
+const iconsBaseTemplatesPath = 'icon';
+const tagsBaseTemplatesPath = 'tag';
+
+export default class LineByLineRenderer {
+  private readonly hoganUtils: HoganJsUtils;
+  private readonly config: typeof defaultLineByLineRendererConfig;
+
+  constructor(hoganUtils: HoganJsUtils, config: LineByLineRendererConfig = {}) {
+    this.hoganUtils = hoganUtils;
+    this.config = { ...defaultLineByLineRendererConfig, ...config };
+  }
+
+  render(diffFiles: DiffFile[]): string {
+    const diffsHtml = diffFiles
+      .map(file => {
+        let diffs;
+        if (file.blocks.length) {
+          diffs = this.generateFileHtml(file);
+        } else {
+          diffs = this.generateEmptyDiff();
+        }
+        return this.makeFileDiffHtml(file, diffs);
+      })
+      .join('\n');
+
+    return this.hoganUtils.render(genericTemplatesPath, 'wrapper', {
+      colorScheme: renderUtils.colorSchemeToCss(this.config.colorScheme),
+      content: diffsHtml,
+    });
+  }
+
+  makeFileDiffHtml(file: DiffFile, diffs: string): string {
+    if (this.config.renderNothingWhenEmpty && Array.isArray(file.blocks) && file.blocks.length === 0) return '';
+
+    const fileDiffTemplate = this.hoganUtils.template(baseTemplatesPath, 'file-diff');
+    const filePathTemplate = this.hoganUtils.template(genericTemplatesPath, 'file-path');
+    const fileIconTemplate = this.hoganUtils.template(iconsBaseTemplatesPath, 'file');
+    const fileTagTemplate = this.hoganUtils.template(tagsBaseTemplatesPath, renderUtils.getFileIcon(file));
+
+    return fileDiffTemplate.render({
+      file: file,
+      fileHtmlId: renderUtils.getHtmlId(file),
+      diffs: diffs,
+      filePath: filePathTemplate.render(
+        {
+          fileDiffName: renderUtils.filenameDiff(file),
+        },
+        {
+          fileIcon: fileIconTemplate,
+          fileTag: fileTagTemplate,
+        },
+      ),
+    });
+  }
+
+  generateEmptyDiff(): string {
+    return this.hoganUtils.render(genericTemplatesPath, 'empty-diff', {
+      contentClass: 'd2h-code-line',
+      CSSLineClass: renderUtils.CSSLineClass,
+    });
+  }
+
+  generateFileHtml(file: DiffFile): string {
+    const matcher = Rematch.newMatcherFn(
+      Rematch.newDistanceFn((e: DiffLine) => renderUtils.deconstructLine(e.content, file.isCombined).content),
+    );
+
+    return file.blocks
+      .map(block => {
+        let lines = this.hoganUtils.render(genericTemplatesPath, 'block-header', {
+          CSSLineClass: renderUtils.CSSLineClass,
+          blockHeader: file.isTooBig ? block.header : renderUtils.escapeForHtml(block.header),
+          lineClass: 'd2h-code-linenumber',
+          contentClass: 'd2h-code-line',
+        });
+
+        this.applyLineGroupping(block).forEach(([contextLines, oldLines, newLines]) => {
+          if (oldLines.length && newLines.length && !contextLines.length) {
+            this.applyRematchMatching(oldLines, newLines, matcher).map(([oldLines, newLines]) => {
+              const { left, right } = this.processChangedLines(file, file.isCombined, oldLines, newLines);
+              lines += left;
+              lines += right;
+            });
+          } else if (contextLines.length) {
+            contextLines.forEach(line => {
+              const { prefix, content } = renderUtils.deconstructLine(line.content, file.isCombined);
+              lines += this.generateSingleLineHtml(file, {
+                type: renderUtils.CSSLineClass.CONTEXT,
+                prefix: prefix,
+                content: content,
+                oldNumber: line.oldNumber,
+                newNumber: line.newNumber,
+              });
+            });
+          } else if (oldLines.length || newLines.length) {
+            const { left, right } = this.processChangedLines(file, file.isCombined, oldLines, newLines);
+            lines += left;
+            lines += right;
+          } else {
+            console.error('Unknown state reached while processing groups of lines', contextLines, oldLines, newLines);
+          }
+        });
+
+        return lines;
+      })
+      .join('\n');
+  }
+
+  applyLineGroupping(block: DiffBlock): DiffLineGroups {
+    const blockLinesGroups: DiffLineGroups = [];
+
+    let oldLines: (DiffLineDeleted & DiffLineContent)[] = [];
+    let newLines: (DiffLineInserted & DiffLineContent)[] = [];
+
+    for (let i = 0; i < block.lines.length; i++) {
+      const diffLine = block.lines[i];
+
+      if (
+        (diffLine.type !== LineType.INSERT && newLines.length) ||
+        (diffLine.type === LineType.CONTEXT && oldLines.length > 0)
+      ) {
+        blockLinesGroups.push([[], oldLines, newLines]);
+        oldLines = [];
+        newLines = [];
+      }
+
+      if (diffLine.type === LineType.CONTEXT) {
+        blockLinesGroups.push([[diffLine], [], []]);
+      } else if (diffLine.type === LineType.INSERT && oldLines.length === 0) {
+        blockLinesGroups.push([[], [], [diffLine]]);
+      } else if (diffLine.type === LineType.INSERT && oldLines.length > 0) {
+        newLines.push(diffLine);
+      } else if (diffLine.type === LineType.DELETE) {
+        oldLines.push(diffLine);
+      }
+    }
+
+    if (oldLines.length || newLines.length) {
+      blockLinesGroups.push([[], oldLines, newLines]);
+      oldLines = [];
+      newLines = [];
+    }
+
+    return blockLinesGroups;
+  }
+
+  applyRematchMatching(
+    oldLines: DiffLine[],
+    newLines: DiffLine[],
+    matcher: Rematch.MatcherFn<DiffLine>,
+  ): DiffLine[][][] {
+    const comparisons = oldLines.length * newLines.length;
+    const maxLineSizeInBlock = Math.max.apply(
+      null,
+      [0].concat(oldLines.concat(newLines).map(elem => elem.content.length)),
+    );
+    const doMatching =
+      comparisons < this.config.matchingMaxComparisons &&
+      maxLineSizeInBlock < this.config.maxLineSizeInBlockForComparison &&
+      (this.config.matching === 'lines' || this.config.matching === 'words');
+
+    return doMatching ? matcher(oldLines, newLines) : [[oldLines, newLines]];
+  }
+
+  processChangedLines(file: DiffFile, isCombined: boolean, oldLines: DiffLine[], newLines: DiffLine[]): FileHtml {
+    const fileHtml = {
+      right: '',
+      left: '',
+    };
+
+    const maxLinesNumber = Math.max(oldLines.length, newLines.length);
+    for (let i = 0; i < maxLinesNumber; i++) {
+      const oldLine = oldLines[i];
+      const newLine = newLines[i];
+
+      const diff =
+        oldLine !== undefined && newLine !== undefined
+          ? renderUtils.diffHighlight(oldLine.content, newLine.content, isCombined, this.config)
+          : undefined;
+
+      const preparedOldLine =
+        oldLine !== undefined && oldLine.oldNumber !== undefined
+          ? {
+              ...(diff !== undefined
+                ? {
+                    prefix: diff.oldLine.prefix,
+                    content: diff.oldLine.content,
+                    type: renderUtils.CSSLineClass.DELETE_CHANGES,
+                  }
+                : {
+                    ...renderUtils.deconstructLine(oldLine.content, isCombined),
+                    type: renderUtils.toCSSClass(oldLine.type),
+                  }),
+              oldNumber: oldLine.oldNumber,
+              newNumber: oldLine.newNumber,
+            }
+          : undefined;
+
+      const preparedNewLine =
+        newLine !== undefined && newLine.newNumber !== undefined
+          ? {
+              ...(diff !== undefined
+                ? {
+                    prefix: diff.newLine.prefix,
+                    content: diff.newLine.content,
+                    type: renderUtils.CSSLineClass.INSERT_CHANGES,
+                  }
+                : {
+                    ...renderUtils.deconstructLine(newLine.content, isCombined),
+                    type: renderUtils.toCSSClass(newLine.type),
+                  }),
+              oldNumber: newLine.oldNumber,
+              newNumber: newLine.newNumber,
+            }
+          : undefined;
+
+      const { left, right } = this.generateLineHtml(file, preparedOldLine, preparedNewLine);
+      fileHtml.left += left;
+      fileHtml.right += right;
+    }
+
+    return fileHtml;
+  }
+
+  generateLineHtml(file: DiffFile, oldLine?: DiffPreparedLine, newLine?: DiffPreparedLine): FileHtml {
+    return {
+      left: this.generateSingleLineHtml(file, oldLine),
+      right: this.generateSingleLineHtml(file, newLine),
+    };
+  }
+
+  generateSingleLineHtml(file: DiffFile, line?: DiffPreparedLine): string {
+    if (line === undefined) return '';
+
+    const lineNumberHtml = this.hoganUtils.render(baseTemplatesPath, 'numbers', {
+      oldNumber: line.oldNumber || '',
+      newNumber: line.newNumber || '',
+    });
+
+    return this.hoganUtils.render(genericTemplatesPath, 'line', {
+      type: line.type,
+      lineClass: 'd2h-code-linenumber',
+      contentClass: 'd2h-code-line',
+      prefix: line.prefix === ' ' ? '&nbsp;' : line.prefix,
+      content: line.content,
+      lineNumber: lineNumberHtml,
+      line,
+      file,
+    });
+  }
+}
+
+type DiffLineGroups = [
+  (DiffLineContext & DiffLineContent)[],
+  (DiffLineDeleted & DiffLineContent)[],
+  (DiffLineInserted & DiffLineContent)[],
+][];
+
+type DiffPreparedLine = {
+  type: renderUtils.CSSLineClass;
+  prefix: string;
+  content: string;
+  oldNumber?: number;
+  newNumber?: number;
+};
+
+type FileHtml = {
+  left: string;
+  right: string;
+};

src/printer-utils.js

@@ -1,109 +0,0 @@
-/*
- *
- * PrinterUtils (printer-utils.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  var jsDiff = require('diff');
-  var utils = require('./utils.js').Utils;
-
-  function PrinterUtils() {
-  }
-
-  PrinterUtils.prototype.getHtmlId = function(file) {
-    var hashCode =  function(text) {
-      var hash = 0, i, chr, len;
-      if (text.length == 0) return hash;
-      for (i = 0, len = text.length; i < len; i++) {
-        chr   = text.charCodeAt(i);
-        hash  = ((hash << 5) - hash) + chr;
-        hash |= 0; // Convert to 32bit integer
-      }
-      return hash;
-    };
-
-    return "d2h-" + hashCode(this.getDiffName(file)).toString().slice(-6);
-  };
-
-  PrinterUtils.prototype.getDiffName = function(file) {
-    var oldFilename = file.oldName;
-    var newFilename = file.newName;
-
-    if (oldFilename && newFilename
-      && oldFilename !== newFilename
-      && !isDeletedName(newFilename)) {
-      return oldFilename + ' -> ' + newFilename;
-    } else if (newFilename && !isDeletedName(newFilename)) {
-      return newFilename;
-    } else if (oldFilename) {
-      return oldFilename;
-    } else {
-      return 'Unknown filename';
-    }
-  };
-
-  PrinterUtils.prototype.diffHighlight = function(diffLine1, diffLine2, config) {
-    var lineStart1, lineStart2;
-
-    var prefixSize = 1;
-
-    if (config.isCombined) {
-      prefixSize = 2;
-    }
-
-    lineStart1 = diffLine1.substr(0, prefixSize);
-    lineStart2 = diffLine2.substr(0, prefixSize);
-
-    diffLine1 = diffLine1.substr(prefixSize);
-    diffLine2 = diffLine2.substr(prefixSize);
-
-    var diff;
-    if (config.charByChar) {
-      diff = jsDiff.diffChars(diffLine1, diffLine2);
-    } else {
-      diff = jsDiff.diffWordsWithSpace(diffLine1, diffLine2);
-    }
-
-    var highlightedLine = '';
-
-    diff.forEach(function(part) {
-      var elemType = part.added ? 'ins' : part.removed ? 'del' : null;
-      var escapedValue = utils.escape(part.value);
-
-      if (elemType !== null) {
-        highlightedLine += '<' + elemType + '>' + escapedValue + '</' + elemType + '>';
-      } else {
-        highlightedLine += escapedValue;
-      }
-    });
-
-    return {
-      first: {
-        prefix: lineStart1,
-        line: removeIns(highlightedLine)
-      },
-      second: {
-        prefix: lineStart2,
-        line: removeDel(highlightedLine)
-      }
-    }
-  };
-
-  function isDeletedName(name) {
-    return name === 'dev/null';
-  }
-
-  function removeIns(line) {
-    return line.replace(/(<ins>((.|\n)*?)<\/ins>)/g, '');
-  }
-
-  function removeDel(line) {
-    return line.replace(/(<del>((.|\n)*?)<\/del>)/g, '');
-  }
-
-  module.exports['PrinterUtils'] = new PrinterUtils();
-
-})(this);

src/rematch.ts

@@ -0,0 +1,135 @@
+/*
+ * Matching two sequences of objects by similarity
+ * Author: W. Illmeyer, Nexxar GmbH
+ */
+
+export type BestMatch = {
+  indexA: number;
+  indexB: number;
+  score: number;
+};
+
+/*
+   Copyright (c) 2011 Andrei Mackenzie
+   Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+   documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+   the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+   and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+   The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+   THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+   */
+export function levenshtein(a: string, b: string): number {
+  if (a.length === 0) {
+    return b.length;
+  }
+  if (b.length === 0) {
+    return a.length;
+  }
+
+  const matrix = [];
+
+  // Increment along the first column of each row
+  let i;
+  for (i = 0; i <= b.length; i++) {
+    matrix[i] = [i];
+  }
+
+  // Increment each column in the first row
+  let j;
+  for (j = 0; j <= a.length; j++) {
+    matrix[0][j] = j;
+  }
+
+  // Fill in the rest of the matrix
+  for (i = 1; i <= b.length; i++) {
+    for (j = 1; j <= a.length; j++) {
+      if (b.charAt(i - 1) === a.charAt(j - 1)) {
+        matrix[i][j] = matrix[i - 1][j - 1];
+      } else {
+        matrix[i][j] = Math.min(
+          matrix[i - 1][j - 1] + 1, // Substitution
+          Math.min(
+            matrix[i][j - 1] + 1, // Insertion
+            matrix[i - 1][j] + 1,
+          ),
+        ); // Deletion
+      }
+    }
+  }
+
+  return matrix[b.length][a.length];
+}
+
+export type DistanceFn<T> = (x: T, y: T) => number;
+
+export function newDistanceFn<T>(str: (value: T) => string): DistanceFn<T> {
+  return (x: T, y: T): number => {
+    const xValue = str(x).trim();
+    const yValue = str(y).trim();
+    const lev = levenshtein(xValue, yValue);
+    return lev / (xValue.length + yValue.length);
+  };
+}
+
+export type MatcherFn<T> = (a: T[], b: T[], level?: number, cache?: Map<string, number>) => T[][][];
+
+export function newMatcherFn<T>(distance: (x: T, y: T) => number): MatcherFn<T> {
+  function findBestMatch(a: T[], b: T[], cache: Map<string, number> = new Map()): BestMatch | undefined {
+    let bestMatchDist = Infinity;
+    let bestMatch;
+
+    for (let i = 0; i < a.length; ++i) {
+      for (let j = 0; j < b.length; ++j) {
+        const cacheKey = JSON.stringify([a[i], b[j]]);
+        let md;
+        if (!(cache.has(cacheKey) && (md = cache.get(cacheKey)))) {
+          md = distance(a[i], b[j]);
+          cache.set(cacheKey, md);
+        }
+        if (md < bestMatchDist) {
+          bestMatchDist = md;
+          bestMatch = { indexA: i, indexB: j, score: bestMatchDist };
+        }
+      }
+    }
+
+    return bestMatch;
+  }
+
+  function group(a: T[], b: T[], level = 0, cache: Map<string, number> = new Map()): T[][][] {
+    const bm = findBestMatch(a, b, cache);
+
+    if (!bm || a.length + b.length < 3) {
+      return [[a, b]];
+    }
+
+    const a1 = a.slice(0, bm.indexA);
+    const b1 = b.slice(0, bm.indexB);
+    const aMatch = [a[bm.indexA]];
+    const bMatch = [b[bm.indexB]];
+    const tailA = bm.indexA + 1;
+    const tailB = bm.indexB + 1;
+    const a2 = a.slice(tailA);
+    const b2 = b.slice(tailB);
+
+    const group1 = group(a1, b1, level + 1, cache);
+    const groupMatch = group(aMatch, bMatch, level + 1, cache);
+    const group2 = group(a2, b2, level + 1, cache);
+    let result = groupMatch;
+
+    if (bm.indexA > 0 || bm.indexB > 0) {
+      result = group1.concat(result);
+    }
+
+    if (a.length > tailA || b.length > tailB) {
+      result = result.concat(group2);
+    }
+
+    return result;
+  }
+
+  return group;
+}

src/render-utils.ts

@@ -0,0 +1,304 @@
+import * as jsDiff from 'diff';
+
+import { unifyPath, hashCode } from './utils';
+import * as rematch from './rematch';
+import {
+  ColorSchemeType,
+  DiffFile,
+  DiffFileName,
+  DiffLineParts,
+  DiffStyleType,
+  LineMatchingType,
+  LineType,
+} from './types';
+
+export type CSSLineClass =
+  | 'd2h-ins'
+  | 'd2h-del'
+  | 'd2h-cntx'
+  | 'd2h-info'
+  | 'd2h-ins d2h-change'
+  | 'd2h-del d2h-change';
+
+export const CSSLineClass: { [_: string]: CSSLineClass } = {
+  INSERTS: 'd2h-ins',
+  DELETES: 'd2h-del',
+  CONTEXT: 'd2h-cntx',
+  INFO: 'd2h-info',
+  INSERT_CHANGES: 'd2h-ins d2h-change',
+  DELETE_CHANGES: 'd2h-del d2h-change',
+};
+
+export type HighlightedLines = {
+  oldLine: {
+    prefix: string;
+    content: string;
+  };
+  newLine: {
+    prefix: string;
+    content: string;
+  };
+};
+
+export interface RenderConfig {
+  matching?: LineMatchingType;
+  matchWordsThreshold?: number;
+  maxLineLengthHighlight?: number;
+  diffStyle?: DiffStyleType;
+  colorScheme?: ColorSchemeType;
+}
+
+export const defaultRenderConfig = {
+  matching: LineMatchingType.NONE,
+  matchWordsThreshold: 0.25,
+  maxLineLengthHighlight: 10000,
+  diffStyle: DiffStyleType.WORD,
+  colorScheme: ColorSchemeType.LIGHT,
+};
+
+const separator = '/';
+const distance = rematch.newDistanceFn((change: jsDiff.Change) => change.value);
+const matcher = rematch.newMatcherFn(distance);
+
+function isDevNullName(name: string): boolean {
+  return name.indexOf('dev/null') !== -1;
+}
+
+function removeInsElements(line: string): string {
+  return line.replace(/(<ins[^>]*>((.|\n)*?)<\/ins>)/g, '');
+}
+
+function removeDelElements(line: string): string {
+  return line.replace(/(<del[^>]*>((.|\n)*?)<\/del>)/g, '');
+}
+
+/**
+ * Convert from LineType to CSSLineClass
+ */
+export function toCSSClass(lineType: LineType): CSSLineClass {
+  switch (lineType) {
+    case LineType.CONTEXT:
+      return CSSLineClass.CONTEXT;
+    case LineType.INSERT:
+      return CSSLineClass.INSERTS;
+    case LineType.DELETE:
+      return CSSLineClass.DELETES;
+  }
+}
+
+export function colorSchemeToCss(colorScheme: ColorSchemeType): string {
+  switch (colorScheme) {
+    case ColorSchemeType.DARK:
+      return 'd2h-dark-color-scheme';
+    case ColorSchemeType.AUTO:
+      return 'd2h-auto-color-scheme';
+    case ColorSchemeType.LIGHT:
+    default:
+      return 'd2h-light-color-scheme';
+  }
+}
+
+/**
+ * Prefix length of the hunk lines in the diff
+ */
+function prefixLength(isCombined: boolean): number {
+  return isCombined ? 2 : 1;
+}
+
+/**
+ * Escapes all required characters for safe HTML rendering
+ */
+// TODO: Test this method inside deconstructLine since it should not be used anywhere else
+export function escapeForHtml(str: string): string {
+  return str
+    .slice(0)
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#x27;')
+    .replace(/\//g, '&#x2F;');
+}
+
+/**
+ * Deconstructs diff @line by separating the content from the prefix type
+ */
+export function deconstructLine(line: string, isCombined: boolean, escape = true): DiffLineParts {
+  const indexToSplit = prefixLength(isCombined);
+  return {
+    prefix: line.substring(0, indexToSplit),
+    content: escape ? escapeForHtml(line.substring(indexToSplit)) : line.substring(indexToSplit),
+  };
+}
+
+/**
+ * Generates pretty filename diffs
+ *
+ *   e.g.:
+ *     1. file = { oldName: "my/path/to/file.js", newName: "my/path/to/new-file.js" }
+ *        returns "my/path/to/{file.js → new-file.js}"
+ *     2. file = { oldName: "my/path/to/file.js", newName: "very/new/path/to/new-file.js" }
+ *        returns "my/path/to/file.js → very/new/path/to/new-file.js"
+ *     3. file = { oldName: "my/path/to/file.js", newName: "my/path/for/file.js" }
+ *        returns "my/path/{to → for}/file.js"
+ */
+export function filenameDiff(file: DiffFileName): string {
+  // TODO: Move unify path to parsing
+  const oldFilename = unifyPath(file.oldName);
+  const newFilename = unifyPath(file.newName);
+
+  if (oldFilename !== newFilename && !isDevNullName(oldFilename) && !isDevNullName(newFilename)) {
+    const prefixPaths = [];
+    const suffixPaths = [];
+
+    const oldFilenameParts = oldFilename.split(separator);
+    const newFilenameParts = newFilename.split(separator);
+
+    const oldFilenamePartsSize = oldFilenameParts.length;
+    const newFilenamePartsSize = newFilenameParts.length;
+
+    let i = 0;
+    let j = oldFilenamePartsSize - 1;
+    let k = newFilenamePartsSize - 1;
+
+    while (i < j && i < k) {
+      if (oldFilenameParts[i] === newFilenameParts[i]) {
+        prefixPaths.push(newFilenameParts[i]);
+        i += 1;
+      } else {
+        break;
+      }
+    }
+
+    while (j > i && k > i) {
+      if (oldFilenameParts[j] === newFilenameParts[k]) {
+        suffixPaths.unshift(newFilenameParts[k]);
+        j -= 1;
+        k -= 1;
+      } else {
+        break;
+      }
+    }
+
+    const finalPrefix = prefixPaths.join(separator);
+    const finalSuffix = suffixPaths.join(separator);
+
+    const oldRemainingPath = oldFilenameParts.slice(i, j + 1).join(separator);
+    const newRemainingPath = newFilenameParts.slice(i, k + 1).join(separator);
+
+    if (finalPrefix.length && finalSuffix.length) {
+      return (
+        finalPrefix + separator + '{' + oldRemainingPath + ' → ' + newRemainingPath + '}' + separator + finalSuffix
+      );
+    } else if (finalPrefix.length) {
+      return finalPrefix + separator + '{' + oldRemainingPath + ' → ' + newRemainingPath + '}';
+    } else if (finalSuffix.length) {
+      return '{' + oldRemainingPath + ' → ' + newRemainingPath + '}' + separator + finalSuffix;
+    }
+
+    return oldFilename + ' → ' + newFilename;
+  } else if (!isDevNullName(newFilename)) {
+    return newFilename;
+  } else {
+    return oldFilename;
+  }
+}
+
+/**
+ * Generates a unique string numerical identifier based on the names of the file diff
+ */
+export function getHtmlId(file: DiffFileName): string {
+  return `d2h-${hashCode(filenameDiff(file)).toString().slice(-6)}`;
+}
+
+/**
+ * Selects the correct icon name for the file
+ */
+export function getFileIcon(file: DiffFile): string {
+  let templateName = 'file-changed';
+
+  if (file.isRename) {
+    templateName = 'file-renamed';
+  } else if (file.isCopy) {
+    templateName = 'file-renamed';
+  } else if (file.isNew) {
+    templateName = 'file-added';
+  } else if (file.isDeleted) {
+    templateName = 'file-deleted';
+  } else if (file.newName !== file.oldName) {
+    // If file is not Added, not Deleted and the names changed it must be a rename :)
+    templateName = 'file-renamed';
+  }
+
+  return templateName;
+}
+
+/**
+ * Highlight differences between @diffLine1 and @diffLine2 using <ins> and <del> tags
+ */
+export function diffHighlight(
+  diffLine1: string,
+  diffLine2: string,
+  isCombined: boolean,
+  config: RenderConfig = {},
+): HighlightedLines {
+  const { matching, maxLineLengthHighlight, matchWordsThreshold, diffStyle } = { ...defaultRenderConfig, ...config };
+
+  const line1 = deconstructLine(diffLine1, isCombined, false);
+  const line2 = deconstructLine(diffLine2, isCombined, false);
+
+  if (line1.content.length > maxLineLengthHighlight || line2.content.length > maxLineLengthHighlight) {
+    return {
+      oldLine: {
+        prefix: line1.prefix,
+        content: escapeForHtml(line1.content),
+      },
+      newLine: {
+        prefix: line2.prefix,
+        content: escapeForHtml(line2.content),
+      },
+    };
+  }
+
+  const diff =
+    diffStyle === 'char'
+      ? jsDiff.diffChars(line1.content, line2.content)
+      : jsDiff.diffWordsWithSpace(line1.content, line2.content);
+
+  const changedWords: jsDiff.Change[] = [];
+  if (diffStyle === 'word' && matching === 'words') {
+    const removed = diff.filter(element => element.removed);
+    const added = diff.filter(element => element.added);
+    const chunks = matcher(added, removed);
+    chunks.forEach(chunk => {
+      if (chunk[0].length === 1 && chunk[1].length === 1) {
+        const dist = distance(chunk[0][0], chunk[1][0]);
+        if (dist < matchWordsThreshold) {
+          changedWords.push(chunk[0][0]);
+          changedWords.push(chunk[1][0]);
+        }
+      }
+    });
+  }
+
+  const highlightedLine = diff.reduce((highlightedLine, part) => {
+    const elemType = part.added ? 'ins' : part.removed ? 'del' : null;
+    const addClass = changedWords.indexOf(part) > -1 ? ' class="d2h-change"' : '';
+    const escapedValue = escapeForHtml(part.value);
+
+    return elemType !== null
+      ? `${highlightedLine}<${elemType}${addClass}>${escapedValue}</${elemType}>`
+      : `${highlightedLine}${escapedValue}`;
+  }, '');
+
+  return {
+    oldLine: {
+      prefix: line1.prefix,
+      content: removeInsElements(highlightedLine),
+    },
+    newLine: {
+      prefix: line2.prefix,
+      content: removeDelElements(highlightedLine),
+    },
+  };
+}

src/side-by-side-printer.js

@@ -1,205 +0,0 @@
-/*
- *
- * HtmlPrinter (html-printer.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  var diffParser = require('./diff-parser.js').DiffParser;
-  var printerUtils = require('./printer-utils.js').PrinterUtils;
-  var utils = require('./utils.js').Utils;
-
-  function SideBySidePrinter() {
-  }
-
-  SideBySidePrinter.prototype.generateSideBySideJsonHtml = function(diffFiles, config) {
-    return '<div class="d2h-wrapper">\n' +
-      diffFiles.map(function(file) {
-
-        var diffs;
-        if (file.blocks.length) {
-          diffs = generateSideBySideFileHtml(file, config);
-        } else {
-          diffs = generateEmptyDiff();
-        }
-
-        return '<div id="' + printerUtils.getHtmlId(file) + '" class="d2h-file-wrapper" data-lang="' + file.language + '">\n' +
-          '     <div class="d2h-file-header">\n' +
-          '       <div class="d2h-file-stats">\n' +
-          '         <span class="d2h-lines-added">+' + file.addedLines + '</span>\n' +
-          '         <span class="d2h-lines-deleted">-' + file.deletedLines + '</span>\n' +
-          '       </div>\n' +
-          '       <div class="d2h-file-name">' + printerUtils.getDiffName(file) + '</div>\n' +
-          '     </div>\n' +
-          '     <div class="d2h-files-diff">\n' +
-          '       <div class="d2h-file-side-diff">\n' +
-          '         <div class="d2h-code-wrapper">\n' +
-          '           <table class="d2h-diff-table">\n' +
-          '             <tbody class="d2h-diff-tbody">\n' +
-          '           ' + diffs.left +
-          '             </tbody>\n' +
-          '           </table>\n' +
-          '         </div>\n' +
-          '       </div>\n' +
-          '       <div class="d2h-file-side-diff">\n' +
-          '         <div class="d2h-code-wrapper">\n' +
-          '           <table class="d2h-diff-table">\n' +
-          '             <tbody class="d2h-diff-tbody">\n' +
-          '           ' + diffs.right +
-          '             </tbody>\n' +
-          '           </table>\n' +
-          '         </div>\n' +
-          '       </div>\n' +
-          '     </div>\n' +
-          '   </div>\n';
-      }).join('\n') +
-      '</div>\n';
-  };
-
-  function generateSideBySideFileHtml(file, config) {
-    var fileHtml = {};
-    fileHtml.left = '';
-    fileHtml.right = '';
-
-    file.blocks.forEach(function(block) {
-
-      fileHtml.left += '<tr>\n' +
-        '  <td class="d2h-code-side-linenumber ' + diffParser.LINE_TYPE.INFO + '"></td>\n' +
-        '  <td class="' + diffParser.LINE_TYPE.INFO + '">' +
-        '    <div class="d2h-code-side-line ' + diffParser.LINE_TYPE.INFO + '">' +
-        '      ' + utils.escape(block.header) +
-        '    </div>' +
-        '  </td>\n' +
-        '</tr>\n';
-
-      fileHtml.right += '<tr>\n' +
-        '  <td class="d2h-code-side-linenumber ' + diffParser.LINE_TYPE.INFO + '"></td>\n' +
-        '  <td class="' + diffParser.LINE_TYPE.INFO + '">' +
-        '    <div class="d2h-code-side-line ' + diffParser.LINE_TYPE.INFO + '"></div>' +
-        '  </td>\n' +
-        '</tr>\n';
-
-      var oldLines = [];
-      var newLines = [];
-      var tmpHtml = '';
-
-      for (var i = 0; i < block.lines.length; i++) {
-        var line = block.lines[i];
-        var escapedLine = utils.escape(line.content);
-
-        if (line.type == diffParser.LINE_TYPE.CONTEXT && !oldLines.length && !newLines.length) {
-          fileHtml.left += generateSingleLineHtml(line.type, line.oldNumber, escapedLine);
-          fileHtml.right += generateSingleLineHtml(line.type, line.newNumber, escapedLine);
-        } else if (line.type == diffParser.LINE_TYPE.INSERTS && !oldLines.length && !newLines.length) {
-          fileHtml.left += generateSingleLineHtml(diffParser.LINE_TYPE.CONTEXT, '', '', '');
-          fileHtml.right += generateSingleLineHtml(line.type, line.newNumber, escapedLine);
-        } else if (line.type == diffParser.LINE_TYPE.DELETES && !newLines.length) {
-          oldLines.push(line);
-        } else if (line.type == diffParser.LINE_TYPE.INSERTS && oldLines.length > newLines.length) {
-          newLines.push(line);
-        } else {
-          var j = 0;
-          var oldLine, newLine;
-
-          if (oldLines.length === newLines.length) {
-            for (j = 0; j < oldLines.length; j++) {
-              oldLine = oldLines[j];
-              newLine = newLines[j];
-
-              config.isCombined = file.isCombined;
-
-              var diff = printerUtils.diffHighlight(oldLine.content, newLine.content, config);
-
-              fileHtml.left +=
-                generateSingleLineHtml(oldLine.type, oldLine.oldNumber,
-                  diff.first.line, diff.first.prefix);
-              fileHtml.right +=
-                generateSingleLineHtml(newLine.type, newLine.newNumber,
-                  diff.second.line, diff.second.prefix);
-            }
-          } else {
-            tmpHtml = processLines(oldLines, newLines);
-            fileHtml.left += tmpHtml.left;
-            fileHtml.right += tmpHtml.right;
-          }
-
-          oldLines = [];
-          newLines = [];
-          i--;
-        }
-      }
-
-      tmpHtml = processLines(oldLines, newLines);
-      fileHtml.left += tmpHtml.left;
-      fileHtml.right += tmpHtml.right;
-    });
-
-    return fileHtml;
-  }
-
-  function processLines(oldLines, newLines) {
-    var fileHtml = {};
-    fileHtml.left = '';
-    fileHtml.right = '';
-
-    var maxLinesNumber = Math.max(oldLines.length, newLines.length);
-    for (j = 0; j < maxLinesNumber; j++) {
-      var oldLine = oldLines[j];
-      var newLine = newLines[j];
-
-      if (oldLine && newLine) {
-        fileHtml.left += generateSingleLineHtml(oldLine.type, oldLine.oldNumber, utils.escape(oldLine.content));
-        fileHtml.right += generateSingleLineHtml(newLine.type, newLine.newNumber, utils.escape(newLine.content));
-      } else if (oldLine) {
-        fileHtml.left += generateSingleLineHtml(oldLine.type, oldLine.oldNumber, utils.escape(oldLine.content));
-        fileHtml.right += generateSingleLineHtml(diffParser.LINE_TYPE.CONTEXT, '', '', '');
-      } else if (newLine) {
-        fileHtml.left += generateSingleLineHtml(diffParser.LINE_TYPE.CONTEXT, '', '', '');
-        fileHtml.right += generateSingleLineHtml(newLine.type, newLine.newNumber, utils.escape(newLine.content));
-      } else {
-        console.error('How did it get here?');
-      }
-    }
-
-    return fileHtml;
-  }
-
-  function generateSingleLineHtml(type, number, content, prefix) {
-    var htmlPrefix = '';
-    if (prefix) {
-      htmlPrefix = '<span class="d2h-code-line-prefix">' + prefix + '</span>';
-    }
-
-    var htmlContent = '';
-    if (content) {
-      htmlContent = '<span class="d2h-code-line-ctn">' + content + '</span>';
-    }
-
-    return '<tr>\n' +
-      '    <td class="d2h-code-side-linenumber ' + type + '">' + number + '</td>\n' +
-      '    <td class="' + type + '">' +
-      '      <div class="d2h-code-side-line ' + type + '">' + htmlPrefix + htmlContent + '</div>' +
-      '    </td>\n' +
-      '  </tr>\n';
-  }
-
-  function generateEmptyDiff() {
-    var fileHtml = {};
-    fileHtml.right = '';
-
-    fileHtml.left = '<tr>\n' +
-      '  <td class="' + diffParser.LINE_TYPE.INFO + '">' +
-      '    <div class="d2h-code-side-line ' + diffParser.LINE_TYPE.INFO + '">' +
-      'File without changes' +
-      '    </div>' +
-      '  </td>\n' +
-      '</tr>\n';
-
-    return fileHtml;
-  }
-
-  module.exports['SideBySidePrinter'] = new SideBySidePrinter();
-
-})(this);

src/side-by-side-renderer.ts

@@ -0,0 +1,314 @@
+import HoganJsUtils from './hoganjs-utils';
+import * as Rematch from './rematch';
+import * as renderUtils from './render-utils';
+import {
+  DiffLine,
+  LineType,
+  DiffFile,
+  DiffBlock,
+  DiffLineContext,
+  DiffLineDeleted,
+  DiffLineInserted,
+  DiffLineContent,
+} from './types';
+
+export interface SideBySideRendererConfig extends renderUtils.RenderConfig {
+  renderNothingWhenEmpty?: boolean;
+  matchingMaxComparisons?: number;
+  maxLineSizeInBlockForComparison?: number;
+}
+
+export const defaultSideBySideRendererConfig = {
+  ...renderUtils.defaultRenderConfig,
+  renderNothingWhenEmpty: false,
+  matchingMaxComparisons: 2500,
+  maxLineSizeInBlockForComparison: 200,
+};
+
+const genericTemplatesPath = 'generic';
+const baseTemplatesPath = 'side-by-side';
+const iconsBaseTemplatesPath = 'icon';
+const tagsBaseTemplatesPath = 'tag';
+
+export default class SideBySideRenderer {
+  private readonly hoganUtils: HoganJsUtils;
+  private readonly config: typeof defaultSideBySideRendererConfig;
+
+  constructor(hoganUtils: HoganJsUtils, config: SideBySideRendererConfig = {}) {
+    this.hoganUtils = hoganUtils;
+    this.config = { ...defaultSideBySideRendererConfig, ...config };
+  }
+
+  render(diffFiles: DiffFile[]): string {
+    const diffsHtml = diffFiles
+      .map(file => {
+        let diffs;
+        if (file.blocks.length) {
+          diffs = this.generateFileHtml(file);
+        } else {
+          diffs = this.generateEmptyDiff();
+        }
+        return this.makeFileDiffHtml(file, diffs);
+      })
+      .join('\n');
+
+    return this.hoganUtils.render(genericTemplatesPath, 'wrapper', {
+      colorScheme: renderUtils.colorSchemeToCss(this.config.colorScheme),
+      content: diffsHtml,
+    });
+  }
+
+  makeFileDiffHtml(file: DiffFile, diffs: FileHtml): string {
+    if (this.config.renderNothingWhenEmpty && Array.isArray(file.blocks) && file.blocks.length === 0) return '';
+
+    const fileDiffTemplate = this.hoganUtils.template(baseTemplatesPath, 'file-diff');
+    const filePathTemplate = this.hoganUtils.template(genericTemplatesPath, 'file-path');
+    const fileIconTemplate = this.hoganUtils.template(iconsBaseTemplatesPath, 'file');
+    const fileTagTemplate = this.hoganUtils.template(tagsBaseTemplatesPath, renderUtils.getFileIcon(file));
+
+    return fileDiffTemplate.render({
+      file: file,
+      fileHtmlId: renderUtils.getHtmlId(file),
+      diffs: diffs,
+      filePath: filePathTemplate.render(
+        {
+          fileDiffName: renderUtils.filenameDiff(file),
+        },
+        {
+          fileIcon: fileIconTemplate,
+          fileTag: fileTagTemplate,
+        },
+      ),
+    });
+  }
+
+  generateEmptyDiff(): FileHtml {
+    return {
+      right: '',
+      left: this.hoganUtils.render(genericTemplatesPath, 'empty-diff', {
+        contentClass: 'd2h-code-side-line',
+        CSSLineClass: renderUtils.CSSLineClass,
+      }),
+    };
+  }
+
+  generateFileHtml(file: DiffFile): FileHtml {
+    const matcher = Rematch.newMatcherFn(
+      Rematch.newDistanceFn((e: DiffLine) => renderUtils.deconstructLine(e.content, file.isCombined).content),
+    );
+
+    return file.blocks
+      .map(block => {
+        const fileHtml = {
+          left: this.makeHeaderHtml(block.header, file),
+          right: this.makeHeaderHtml(''),
+        };
+
+        this.applyLineGroupping(block).forEach(([contextLines, oldLines, newLines]) => {
+          if (oldLines.length && newLines.length && !contextLines.length) {
+            this.applyRematchMatching(oldLines, newLines, matcher).map(([oldLines, newLines]) => {
+              const { left, right } = this.processChangedLines(file.isCombined, oldLines, newLines);
+              fileHtml.left += left;
+              fileHtml.right += right;
+            });
+          } else if (contextLines.length) {
+            contextLines.forEach(line => {
+              const { prefix, content } = renderUtils.deconstructLine(line.content, file.isCombined);
+              const { left, right } = this.generateLineHtml(
+                {
+                  type: renderUtils.CSSLineClass.CONTEXT,
+                  prefix: prefix,
+                  content: content,
+                  number: line.oldNumber,
+                },
+                {
+                  type: renderUtils.CSSLineClass.CONTEXT,
+                  prefix: prefix,
+                  content: content,
+                  number: line.newNumber,
+                },
+              );
+              fileHtml.left += left;
+              fileHtml.right += right;
+            });
+          } else if (oldLines.length || newLines.length) {
+            const { left, right } = this.processChangedLines(file.isCombined, oldLines, newLines);
+            fileHtml.left += left;
+            fileHtml.right += right;
+          } else {
+            console.error('Unknown state reached while processing groups of lines', contextLines, oldLines, newLines);
+          }
+        });
+
+        return fileHtml;
+      })
+      .reduce(
+        (accomulated, html) => {
+          return { left: accomulated.left + html.left, right: accomulated.right + html.right };
+        },
+        { left: '', right: '' },
+      );
+  }
+
+  applyLineGroupping(block: DiffBlock): DiffLineGroups {
+    const blockLinesGroups: DiffLineGroups = [];
+
+    let oldLines: (DiffLineDeleted & DiffLineContent)[] = [];
+    let newLines: (DiffLineInserted & DiffLineContent)[] = [];
+
+    for (let i = 0; i < block.lines.length; i++) {
+      const diffLine = block.lines[i];
+
+      if (
+        (diffLine.type !== LineType.INSERT && newLines.length) ||
+        (diffLine.type === LineType.CONTEXT && oldLines.length > 0)
+      ) {
+        blockLinesGroups.push([[], oldLines, newLines]);
+        oldLines = [];
+        newLines = [];
+      }
+
+      if (diffLine.type === LineType.CONTEXT) {
+        blockLinesGroups.push([[diffLine], [], []]);
+      } else if (diffLine.type === LineType.INSERT && oldLines.length === 0) {
+        blockLinesGroups.push([[], [], [diffLine]]);
+      } else if (diffLine.type === LineType.INSERT && oldLines.length > 0) {
+        newLines.push(diffLine);
+      } else if (diffLine.type === LineType.DELETE) {
+        oldLines.push(diffLine);
+      }
+    }
+
+    if (oldLines.length || newLines.length) {
+      blockLinesGroups.push([[], oldLines, newLines]);
+      oldLines = [];
+      newLines = [];
+    }
+
+    return blockLinesGroups;
+  }
+
+  applyRematchMatching(
+    oldLines: DiffLine[],
+    newLines: DiffLine[],
+    matcher: Rematch.MatcherFn<DiffLine>,
+  ): DiffLine[][][] {
+    const comparisons = oldLines.length * newLines.length;
+    const maxLineSizeInBlock = Math.max.apply(
+      null,
+      [0].concat(oldLines.concat(newLines).map(elem => elem.content.length)),
+    );
+    const doMatching =
+      comparisons < this.config.matchingMaxComparisons &&
+      maxLineSizeInBlock < this.config.maxLineSizeInBlockForComparison &&
+      (this.config.matching === 'lines' || this.config.matching === 'words');
+
+    return doMatching ? matcher(oldLines, newLines) : [[oldLines, newLines]];
+  }
+
+  makeHeaderHtml(blockHeader: string, file?: DiffFile): string {
+    return this.hoganUtils.render(genericTemplatesPath, 'block-header', {
+      CSSLineClass: renderUtils.CSSLineClass,
+      blockHeader: file?.isTooBig ? blockHeader : renderUtils.escapeForHtml(blockHeader),
+      lineClass: 'd2h-code-side-linenumber',
+      contentClass: 'd2h-code-side-line',
+    });
+  }
+
+  processChangedLines(isCombined: boolean, oldLines: DiffLine[], newLines: DiffLine[]): FileHtml {
+    const fileHtml = {
+      right: '',
+      left: '',
+    };
+
+    const maxLinesNumber = Math.max(oldLines.length, newLines.length);
+    for (let i = 0; i < maxLinesNumber; i++) {
+      const oldLine = oldLines[i];
+      const newLine = newLines[i];
+
+      const diff =
+        oldLine !== undefined && newLine !== undefined
+          ? renderUtils.diffHighlight(oldLine.content, newLine.content, isCombined, this.config)
+          : undefined;
+
+      const preparedOldLine =
+        oldLine !== undefined && oldLine.oldNumber !== undefined
+          ? {
+              ...(diff !== undefined
+                ? {
+                    prefix: diff.oldLine.prefix,
+                    content: diff.oldLine.content,
+                    type: renderUtils.CSSLineClass.DELETE_CHANGES,
+                  }
+                : {
+                    ...renderUtils.deconstructLine(oldLine.content, isCombined),
+                    type: renderUtils.toCSSClass(oldLine.type),
+                  }),
+              number: oldLine.oldNumber,
+            }
+          : undefined;
+
+      const preparedNewLine =
+        newLine !== undefined && newLine.newNumber !== undefined
+          ? {
+              ...(diff !== undefined
+                ? {
+                    prefix: diff.newLine.prefix,
+                    content: diff.newLine.content,
+                    type: renderUtils.CSSLineClass.INSERT_CHANGES,
+                  }
+                : {
+                    ...renderUtils.deconstructLine(newLine.content, isCombined),
+                    type: renderUtils.toCSSClass(newLine.type),
+                  }),
+              number: newLine.newNumber,
+            }
+          : undefined;
+
+      const { left, right } = this.generateLineHtml(preparedOldLine, preparedNewLine);
+      fileHtml.left += left;
+      fileHtml.right += right;
+    }
+
+    return fileHtml;
+  }
+
+  generateLineHtml(oldLine?: DiffPreparedLine, newLine?: DiffPreparedLine): FileHtml {
+    return {
+      left: this.generateSingleHtml(oldLine),
+      right: this.generateSingleHtml(newLine),
+    };
+  }
+
+  generateSingleHtml(line?: DiffPreparedLine): string {
+    const lineClass = 'd2h-code-side-linenumber';
+    const contentClass = 'd2h-code-side-line';
+
+    return this.hoganUtils.render(genericTemplatesPath, 'line', {
+      type: line?.type || `${renderUtils.CSSLineClass.CONTEXT} d2h-emptyplaceholder`,
+      lineClass: line !== undefined ? lineClass : `${lineClass} d2h-code-side-emptyplaceholder`,
+      contentClass: line !== undefined ? contentClass : `${contentClass} d2h-code-side-emptyplaceholder`,
+      prefix: line?.prefix === ' ' ? '&nbsp;' : line?.prefix,
+      content: line?.content,
+      lineNumber: line?.number,
+    });
+  }
+}
+
+type DiffLineGroups = [
+  (DiffLineContext & DiffLineContent)[],
+  (DiffLineDeleted & DiffLineContent)[],
+  (DiffLineInserted & DiffLineContent)[],
+][];
+
+type DiffPreparedLine = {
+  type: renderUtils.CSSLineClass;
+  prefix: string;
+  content: string;
+  number: number;
+};
+
+type FileHtml = {
+  left: string;
+  right: string;
+};

src/templates/file-summary-line.mustache

@@ -0,0 +1,10 @@
+<li class="d2h-file-list-line">
+    <span class="d2h-file-name-wrapper">
+      {{>fileIcon}}
+      <a href="#{{fileHtmlId}}" class="d2h-file-name">{{fileName}}</a>
+      <span class="d2h-file-stats">
+          <span class="d2h-lines-added">{{addedLines}}</span>
+          <span class="d2h-lines-deleted">{{deletedLines}}</span>
+      </span>
+    </span>
+</li>

src/templates/file-summary-wrapper.mustache

@@ -0,0 +1,10 @@
+<div class="d2h-file-list-wrapper {{colorScheme}}">
+    <div class="d2h-file-list-header">
+        <span class="d2h-file-list-title">Files changed ({{filesNumber}})</span>
+        <a class="d2h-file-switch d2h-hide">hide</a>
+        <a class="d2h-file-switch d2h-show">show</a>
+    </div>
+    <ol class="d2h-file-list">
+    {{{files}}}
+    </ol>
+</div>

src/templates/generic-block-header.mustache

@@ -0,0 +1,6 @@
+<tr>
+    <td class="{{lineClass}} {{CSSLineClass.INFO}}"></td>
+    <td class="{{CSSLineClass.INFO}}">
+        <div class="{{contentClass}}">{{#blockHeader}}{{{blockHeader}}}{{/blockHeader}}{{^blockHeader}}&nbsp;{{/blockHeader}}</div>
+    </td>
+</tr>

src/templates/generic-empty-diff.mustache

@@ -0,0 +1,7 @@
+<tr>
+    <td class="{{CSSLineClass.INFO}}">
+        <div class="{{contentClass}}">
+            File without changes
+        </div>
+    </td>
+</tr>

src/templates/generic-file-path.mustache

@@ -0,0 +1,9 @@
+<span class="d2h-file-name-wrapper">
+    {{>fileIcon}}
+    <span class="d2h-file-name">{{fileDiffName}}</span>
+    {{>fileTag}}
+</span>
+<label class="d2h-file-collapse">
+    <input class="d2h-file-collapse-input" type="checkbox" name="viewed" value="viewed">
+    Viewed
+</label>

src/templates/generic-line.mustache

@@ -0,0 +1,21 @@
+<tr>
+    <td class="{{lineClass}} {{type}}">
+      {{{lineNumber}}}
+    </td>
+    <td class="{{type}}">
+        <div class="{{contentClass}}">
+        {{#prefix}}
+            <span class="d2h-code-line-prefix">{{{prefix}}}</span>
+        {{/prefix}}
+        {{^prefix}}
+            <span class="d2h-code-line-prefix">&nbsp;</span>
+        {{/prefix}}
+        {{#content}}
+            <span class="d2h-code-line-ctn">{{{content}}}</span>
+        {{/content}}
+        {{^content}}
+            <span class="d2h-code-line-ctn"><br></span>
+        {{/content}}
+        </div>
+    </td>
+</tr>

src/templates/generic-wrapper.mustache

@@ -0,0 +1,3 @@
+<div class="d2h-wrapper {{colorScheme}}">
+    {{{content}}}
+</div>

src/templates/icon-file-added.mustache

@@ -0,0 +1,4 @@
+<svg aria-hidden="true" class="d2h-icon d2h-added" height="16" title="added" version="1.1" viewBox="0 0 14 16"
+     width="14">
+    <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM6 9H3V7h3V4h2v3h3v2H8v3H6V9z"></path>
+</svg>

src/templates/icon-file-changed.mustache

@@ -0,0 +1,4 @@
+<svg aria-hidden="true" class="d2h-icon d2h-changed" height="16" title="modified" version="1.1"
+     viewBox="0 0 14 16" width="14">
+    <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM4 8c0-1.66 1.34-3 3-3s3 1.34 3 3-1.34 3-3 3-3-1.34-3-3z"></path>
+</svg>

src/templates/icon-file-deleted.mustache

@@ -0,0 +1,4 @@
+<svg aria-hidden="true" class="d2h-icon d2h-deleted" height="16" title="removed" version="1.1"
+     viewBox="0 0 14 16" width="14">
+    <path d="M13 1H1C0.45 1 0 1.45 0 2v12c0 0.55 0.45 1 1 1h12c0.55 0 1-0.45 1-1V2c0-0.55-0.45-1-1-1z m0 13H1V2h12v12zM11 9H3V7h8v2z"></path>
+</svg>

src/templates/icon-file-renamed.mustache

@@ -0,0 +1,4 @@
+<svg aria-hidden="true" class="d2h-icon d2h-moved" height="16" title="renamed" version="1.1"
+     viewBox="0 0 14 16" width="14">
+    <path d="M6 9H3V7h3V4l5 4-5 4V9z m8-7v12c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h12c0.55 0 1 0.45 1 1z m-1 0H1v12h12V2z"></path>
+</svg>

src/templates/icon-file.mustache

@@ -0,0 +1,3 @@
+<svg aria-hidden="true" class="d2h-icon" height="16" version="1.1" viewBox="0 0 12 16" width="12">
+    <path d="M6 5H2v-1h4v1zM2 8h7v-1H2v1z m0 2h7v-1H2v1z m0 2h7v-1H2v1z m10-7.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V2c0-0.55 0.45-1 1-1h7.5l3.5 3.5z m-1 0.5L8 2H1v12h10V5z"></path>
+</svg>

src/templates/line-by-line-file-diff.mustache

@@ -0,0 +1,14 @@
+<div id="{{fileHtmlId}}" class="d2h-file-wrapper" data-lang="{{file.language}}">
+    <div class="d2h-file-header">
+    {{{filePath}}}
+    </div>
+    <div class="d2h-file-diff">
+        <div class="d2h-code-wrapper">
+            <table class="d2h-diff-table">
+                <tbody class="d2h-diff-tbody">
+                {{{diffs}}}
+                </tbody>
+            </table>
+        </div>
+    </div>
+</div>

src/templates/line-by-line-numbers.mustache

@@ -0,0 +1,2 @@
+<div class="line-num1">{{oldNumber}}</div>
+<div class="line-num2">{{newNumber}}</div>

src/templates/side-by-side-file-diff.mustache

@@ -0,0 +1,25 @@
+<div id="{{fileHtmlId}}" class="d2h-file-wrapper" data-lang="{{file.language}}">
+    <div class="d2h-file-header">
+      {{{filePath}}}
+    </div>
+    <div class="d2h-files-diff">
+        <div class="d2h-file-side-diff">
+            <div class="d2h-code-wrapper">
+                <table class="d2h-diff-table">
+                    <tbody class="d2h-diff-tbody">
+                    {{{diffs.left}}}
+                    </tbody>
+                </table>
+            </div>
+        </div>
+        <div class="d2h-file-side-diff">
+            <div class="d2h-code-wrapper">
+                <table class="d2h-diff-table">
+                    <tbody class="d2h-diff-tbody">
+                    {{{diffs.right}}}
+                    </tbody>
+                </table>
+            </div>
+        </div>
+    </div>
+</div>

src/templates/tag-file-added.mustache

@@ -0,0 +1 @@
+<span class="d2h-tag d2h-added d2h-added-tag">ADDED</span>

src/templates/tag-file-changed.mustache

@@ -0,0 +1 @@
+<span class="d2h-tag d2h-changed d2h-changed-tag">CHANGED</span>

src/templates/tag-file-deleted.mustache

@@ -0,0 +1 @@
+<span class="d2h-tag d2h-deleted d2h-deleted-tag">DELETED</span>

src/templates/tag-file-renamed.mustache

@@ -0,0 +1 @@
+<span class="d2h-tag d2h-moved d2h-moved-tag">RENAMED</span>

src/types.ts

@@ -0,0 +1,99 @@
+export type DiffLineParts = {
+  prefix: string;
+  content: string;
+};
+
+export enum LineType {
+  INSERT = 'insert',
+  DELETE = 'delete',
+  CONTEXT = 'context',
+}
+
+export interface DiffLineDeleted {
+  type: LineType.DELETE;
+  oldNumber: number;
+  newNumber: undefined;
+}
+
+export interface DiffLineInserted {
+  type: LineType.INSERT;
+  oldNumber: undefined;
+  newNumber: number;
+}
+
+export interface DiffLineContext {
+  type: LineType.CONTEXT;
+  oldNumber: number;
+  newNumber: number;
+}
+
+export type DiffLineContent = {
+  content: string;
+};
+
+export type DiffLine = (DiffLineDeleted | DiffLineInserted | DiffLineContext) & DiffLineContent;
+
+export interface DiffBlock {
+  oldStartLine: number;
+  oldStartLine2?: number;
+  newStartLine: number;
+  header: string;
+  lines: DiffLine[];
+}
+
+export interface DiffFileName {
+  oldName: string;
+  newName: string;
+}
+
+export interface DiffFile extends DiffFileName {
+  addedLines: number;
+  deletedLines: number;
+  isCombined: boolean;
+  isGitDiff: boolean;
+  language: string;
+  blocks: DiffBlock[];
+  oldMode?: string | string[];
+  newMode?: string;
+  deletedFileMode?: string;
+  newFileMode?: string;
+  isDeleted?: boolean;
+  isNew?: boolean;
+  isCopy?: boolean;
+  isRename?: boolean;
+  isBinary?: boolean;
+  isTooBig?: boolean;
+  unchangedPercentage?: number;
+  changedPercentage?: number;
+  checksumBefore?: string | string[];
+  checksumAfter?: string;
+  mode?: string;
+}
+
+export type OutputFormatType = 'line-by-line' | 'side-by-side';
+
+export const OutputFormatType: { [_: string]: OutputFormatType } = {
+  LINE_BY_LINE: 'line-by-line',
+  SIDE_BY_SIDE: 'side-by-side',
+};
+
+export type LineMatchingType = 'lines' | 'words' | 'none';
+
+export const LineMatchingType: { [_: string]: LineMatchingType } = {
+  LINES: 'lines',
+  WORDS: 'words',
+  NONE: 'none',
+};
+
+export type DiffStyleType = 'word' | 'char';
+
+export const DiffStyleType: { [_: string]: DiffStyleType } = {
+  WORD: 'word',
+  CHAR: 'char',
+};
+
+export enum ColorSchemeType {
+  AUTO = 'auto',
+  DARK = 'dark',
+  LIGHT = 'light',
+}

src/ui/css/diff2html.css

@@ -0,0 +1,741 @@
+/*
+ *
+ * Diff to HTML (diff2html.css)
+ * Author: rtfpessoa
+ *
+ */
+
+:root,
+:host {
+  --d2h-bg-color: #fff;
+  --d2h-border-color: #ddd;
+
+  --d2h-dim-color: rgba(0, 0, 0, 0.3);
+
+  --d2h-line-border-color: #eeeeee;
+
+  --d2h-file-header-bg-color: #f7f7f7;
+  --d2h-file-header-border-color: #d8d8d8;
+
+  --d2h-empty-placeholder-bg-color: #f1f1f1;
+  --d2h-empty-placeholder-border-color: #e1e1e1;
+
+  --d2h-selected-color: #c8e1ff;
+
+  --d2h-ins-bg-color: #dfd;
+  --d2h-ins-border-color: #b4e2b4;
+  --d2h-ins-highlight-bg-color: #97f295;
+  --d2h-ins-label-color: #399839;
+
+  --d2h-del-bg-color: #fee8e9;
+  --d2h-del-border-color: #e9aeae;
+  --d2h-del-highlight-bg-color: #ffb6ba;
+  --d2h-del-label-color: #c33;
+
+  --d2h-change-del-color: #fdf2d0;
+  --d2h-change-ins-color: #ded;
+
+  --d2h-info-bg-color: #f8fafd;
+  --d2h-info-border-color: #d5e4f2;
+
+  --d2h-change-label-color: #d0b44c;
+  --d2h-moved-label-color: #3572b0;
+
+  /**
+   * Dark Color Scheme
+   */
+
+  --d2h-dark-color: rgb(230, 237, 243);
+  --d2h-dark-bg-color: rgb(13, 17, 23);
+  --d2h-dark-border-color: rgb(48, 54, 61);
+
+  --d2h-dark-dim-color: rgb(110, 118, 129);
+
+  --d2h-dark-line-border-color: rgb(33, 38, 45);
+
+  --d2h-dark-file-header-bg-color: rgb(22, 27, 34);
+  --d2h-dark-file-header-border-color: rgb(48, 54, 61);
+
+  --d2h-dark-empty-placeholder-bg-color: rgba(110, 118, 129, 0.1);
+  --d2h-dark-empty-placeholder-border-color: rgb(48, 54, 61);
+
+  --d2h-dark-selected-color: rgba(56, 139, 253, 0.1);
+
+  --d2h-dark-ins-bg-color: rgba(46, 160, 67, 0.15);
+  --d2h-dark-ins-border-color: rgba(46, 160, 67, 0.4);
+  --d2h-dark-ins-highlight-bg-color: rgba(46, 160, 67, 0.4);
+  --d2h-dark-ins-label-color: rgb(63, 185, 80);
+
+  --d2h-dark-del-bg-color: rgba(248, 81, 73, 0.1);
+  --d2h-dark-del-border-color: rgba(248, 81, 73, 0.4);
+  --d2h-dark-del-highlight-bg-color: rgba(248, 81, 73, 0.4);
+  --d2h-dark-del-label-color: rgb(248, 81, 73);
+
+  --d2h-dark-change-del-color: rgba(210, 153, 34, 0.2);
+  --d2h-dark-change-ins-color: rgba(46, 160, 67, 0.25);
+
+  --d2h-dark-info-bg-color: rgba(56, 139, 253, 0.1);
+  --d2h-dark-info-border-color: rgba(56, 139, 253, 0.4);
+
+  --d2h-dark-change-label-color: rgb(210, 153, 34);
+  --d2h-dark-moved-label-color: #3572b0;
+}
+
+.d2h-wrapper {
+  text-align: left;
+}
+
+.d2h-file-header {
+  display: flex;
+  height: 35px;
+  padding: 5px 10px;
+  border-bottom: 1px solid var(--d2h-file-header-border-color);
+  background-color: var(--d2h-file-header-bg-color);
+  font-family: 'Source Sans Pro', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+}
+
+.d2h-file-header.d2h-sticky-header {
+  position: sticky;
+  top: 0;
+  z-index: 1;
+}
+
+.d2h-file-stats {
+  display: -webkit-box;
+  display: -ms-flexbox;
+  display: flex;
+  margin-left: auto;
+  font-size: 14px;
+}
+
+.d2h-lines-added {
+  text-align: right;
+  border: 1px solid var(--d2h-ins-border-color);
+  border-radius: 5px 0 0 5px;
+  color: var(--d2h-ins-label-color);
+  padding: 2px;
+  vertical-align: middle;
+}
+
+.d2h-lines-deleted {
+  text-align: left;
+  border: 1px solid var(--d2h-del-border-color);
+  border-radius: 0 5px 5px 0;
+  color: var(--d2h-del-label-color);
+  padding: 2px;
+  vertical-align: middle;
+  margin-left: 1px;
+}
+
+.d2h-file-name-wrapper {
+  display: -webkit-box;
+  display: -ms-flexbox;
+  display: flex;
+  -webkit-box-align: center;
+  -ms-flex-align: center;
+  align-items: center;
+  width: 100%;
+  font-size: 15px;
+}
+
+.d2h-file-name {
+  white-space: nowrap;
+  text-overflow: ellipsis;
+  overflow-x: hidden;
+}
+
+.d2h-file-wrapper {
+  border: 1px solid var(--d2h-border-color);
+  border-radius: 3px;
+  margin-bottom: 1em;
+}
+
+.d2h-file-collapse {
+  justify-content: flex-end;
+  display: none;
+  cursor: pointer;
+  font-size: 12px;
+  align-items: center;
+  border-radius: 3px;
+  border: 1px solid var(--d2h-border-color);
+  padding: 4px 8px;
+}
+
+.d2h-file-collapse.d2h-selected {
+  background-color: var(--d2h-selected-color);
+}
+
+.d2h-file-collapse-input {
+  margin: 0 4px 0 0;
+}
+
+.d2h-diff-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-family: 'Menlo', 'Consolas', monospace;
+  font-size: 13px;
+}
+
+.d2h-files-diff {
+  display: flex;
+  width: 100%;
+}
+
+.d2h-file-diff {
+  overflow-y: hidden;
+}
+
+.d2h-files-diff.d2h-d-none,
+.d2h-file-diff.d2h-d-none {
+  display: none;
+}
+
+.d2h-file-side-diff {
+  display: inline-block;
+  overflow-x: scroll;
+  overflow-y: hidden;
+  width: 50%;
+}
+
+.d2h-code-line {
+  display: inline-block;
+  white-space: nowrap;
+  user-select: none;
+  width: calc(100% - 16em);
+  /* Compensate for the absolute positioning of the line numbers */
+  padding: 0 8em;
+}
+
+.d2h-code-side-line {
+  display: inline-block;
+  white-space: nowrap;
+  user-select: none;
+  width: calc(100% - 9em);
+  /* Compensate for the absolute positioning of the line numbers */
+  padding: 0 4.5em;
+}
+
+.d2h-code-line-ctn {
+  display: inline-block;
+  background: none;
+  padding: 0;
+  word-wrap: normal;
+  white-space: pre;
+  user-select: text;
+  width: 100%;
+  vertical-align: middle;
+}
+
+.d2h-code-line del,
+.d2h-code-side-line del {
+  display: inline-block;
+  margin-top: -1px;
+  text-decoration: none;
+  background-color: var(--d2h-del-highlight-bg-color);
+  border-radius: 0.2em;
+}
+
+.d2h-code-line ins,
+.d2h-code-side-line ins {
+  display: inline-block;
+  margin-top: -1px;
+  text-decoration: none;
+  background-color: var(--d2h-ins-highlight-bg-color);
+  border-radius: 0.2em;
+  text-align: left;
+}
+
+.d2h-code-line-prefix {
+  display: inline;
+  background: none;
+  padding: 0;
+  word-wrap: normal;
+  white-space: pre;
+}
+
+.line-num1 {
+  box-sizing: border-box;
+  float: left;
+  width: 3.5em;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  padding: 0 0.5em 0 0.5em;
+}
+
+.line-num2 {
+  box-sizing: border-box;
+  float: right;
+  width: 3.5em;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  padding: 0 0.5em 0 0.5em;
+}
+
+.d2h-code-linenumber {
+  box-sizing: border-box;
+  width: 7.5em;
+  /* Keep the numbers fixed on line contents scroll */
+  position: absolute;
+  display: inline-block;
+  background-color: var(--d2h-bg-color);
+  color: var(--d2h-dim-color);
+  text-align: right;
+  border: solid var(--d2h-line-border-color);
+  border-width: 0 1px 0 1px;
+  cursor: pointer;
+}
+
+.d2h-code-linenumber:after {
+  content: '\200b';
+}
+
+.d2h-code-side-linenumber {
+  /* Keep the numbers fixed on line contents scroll */
+  position: absolute;
+  display: inline-block;
+  box-sizing: border-box;
+  width: 4em;
+  background-color: var(--d2h-bg-color);
+  color: var(--d2h-dim-color);
+  text-align: right;
+  border: solid var(--d2h-line-border-color);
+  border-width: 0 1px 0 1px;
+  cursor: pointer;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  padding: 0 0.5em 0 0.5em;
+}
+
+.d2h-code-side-linenumber:after {
+  content: '\200b';
+}
+
+.d2h-code-side-emptyplaceholder,
+.d2h-emptyplaceholder {
+  background-color: var(--d2h-empty-placeholder-bg-color);
+  border-color: var(--d2h-empty-placeholder-border-color);
+}
+
+.d2h-code-linenumber,
+.d2h-code-side-linenumber,
+.d2h-code-line-prefix,
+.d2h-emptyplaceholder {
+  user-select: none;
+}
+
+.d2h-code-linenumber,
+.d2h-code-side-linenumber {
+  direction: rtl;
+}
+
+/*
+ * Changes Highlight
+ */
+
+.d2h-del {
+  background-color: var(--d2h-del-bg-color);
+  border-color: var(--d2h-del-border-color);
+}
+
+.d2h-ins {
+  background-color: var(--d2h-ins-bg-color);
+  border-color: var(--d2h-ins-border-color);
+}
+
+.d2h-info {
+  background-color: var(--d2h-info-bg-color);
+  color: var(--d2h-dim-color);
+  border-color: var(--d2h-info-border-color);
+}
+
+.d2h-file-diff .d2h-del.d2h-change {
+  background-color: var(--d2h-change-del-color);
+}
+
+.d2h-file-diff .d2h-ins.d2h-change {
+  background-color: var(--d2h-change-ins-color);
+}
+
+/*
+ * File Summary List
+ */
+
+.d2h-file-list-wrapper {
+  margin-bottom: 10px;
+}
+
+.d2h-file-list-wrapper a {
+  text-decoration: none;
+  color: var(--d2h-moved-label-color);
+}
+
+.d2h-file-list-wrapper a:visited {
+  color: var(--d2h-moved-label-color);
+}
+
+.d2h-file-list-header {
+  text-align: left;
+}
+
+.d2h-file-list-title {
+  font-weight: bold;
+}
+
+.d2h-file-list-line {
+  display: -webkit-box;
+  display: -ms-flexbox;
+  display: flex;
+  text-align: left;
+}
+
+.d2h-file-list {
+  display: block;
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+.d2h-file-list > li {
+  border-bottom: var(--d2h-border-color) solid 1px;
+  padding: 5px 10px;
+  margin: 0;
+}
+
+.d2h-file-list > li:last-child {
+  border-bottom: none;
+}
+
+.d2h-file-switch {
+  display: none;
+  font-size: 10px;
+  cursor: pointer;
+}
+
+.d2h-icon {
+  vertical-align: middle;
+  margin-right: 10px;
+  fill: currentColor;
+}
+
+.d2h-deleted {
+  color: var(--d2h-del-label-color);
+}
+
+.d2h-added {
+  color: var(--d2h-ins-label-color);
+}
+
+.d2h-changed {
+  color: var(--d2h-change-label-color);
+}
+
+.d2h-moved {
+  color: var(--d2h-moved-label-color);
+}
+
+.d2h-tag {
+  display: -webkit-box;
+  display: -ms-flexbox;
+  display: flex;
+  font-size: 10px;
+  margin-left: 5px;
+  padding: 0 2px;
+  background-color: var(--d2h-bg-color);
+}
+
+.d2h-deleted-tag {
+  border: var(--d2h-del-label-color) 1px solid;
+}
+
+.d2h-added-tag {
+  border: var(--d2h-ins-label-color) 1px solid;
+}
+
+.d2h-changed-tag {
+  border: var(--d2h-change-label-color) 1px solid;
+}
+
+.d2h-moved-tag {
+  border: var(--d2h-moved-label-color) 1px solid;
+}
+
+/**
+ * Dark Mode Colors
+ */
+
+.d2h-dark-color-scheme {
+  color: var(--d2h-dark-color);
+  background-color: var(--d2h-dark-bg-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-header {
+  background-color: var(--d2h-dark-file-header-bg-color);
+  border-bottom: var(--d2h-dark-file-header-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-lines-added {
+  border: 1px solid var(--d2h-dark-ins-border-color);
+  color: var(--d2h-dark-ins-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-lines-deleted {
+  border: 1px solid var(--d2h-dark-del-border-color);
+  color: var(--d2h-dark-del-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-code-line del,
+.d2h-dark-color-scheme .d2h-code-side-line del {
+  background-color: var(--d2h-dark-del-highlight-bg-color);
+}
+
+.d2h-dark-color-scheme .d2h-code-line ins,
+.d2h-dark-color-scheme .d2h-code-side-line ins {
+  background-color: var(--d2h-dark-ins-highlight-bg-color);
+}
+
+.d2h-dark-color-scheme .d2h-diff-tbody {
+  border-color: var(--d2h-dark-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-code-side-linenumber {
+  background-color: var(--d2h-dark-bg-color);
+  color: var(--d2h-dark-dim-color);
+  border-color: var(--d2h-dark-line-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-files-diff .d2h-code-side-emptyplaceholder,
+.d2h-dark-color-scheme .d2h-files-diff .d2h-emptyplaceholder {
+  background-color: var(--d2h-dark-empty-placeholder-bg-color);
+  border-color: var(--d2h-dark-empty-placeholder-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-code-linenumber {
+  background-color: var(--d2h-dark-bg-color);
+  color: var(--d2h-dark-dim-color);
+  border-color: var(--d2h-dark-line-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-del {
+  background-color: var(--d2h-dark-del-bg-color);
+  border-color: var(--d2h-dark-del-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-ins {
+  background-color: var(--d2h-dark-ins-bg-color);
+  border-color: var(--d2h-dark-ins-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-info {
+  background-color: var(--d2h-dark-info-bg-color);
+  color: var(--d2h-dark-dim-color);
+  border-color: var(--d2h-dark-info-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-diff .d2h-del.d2h-change {
+  background-color: var(--d2h-dark-change-del-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-diff .d2h-ins.d2h-change {
+  background-color: var(--d2h-dark-change-ins-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-wrapper {
+  border: 1px solid var(--d2h-dark-border-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-collapse {
+  border: 1px solid var(--d2h-dark-bg-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-collapse.d2h-selected {
+  background-color: var(--d2h-dark-selected-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-list-wrapper a {
+  color: var(--d2h-dark-moved-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-list-wrapper a:visited {
+  color: var(--d2h-dark-moved-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-file-list > li {
+  border-bottom: var(--d2h-dark-bg-color) solid 1px;
+}
+
+.d2h-dark-color-scheme .d2h-deleted {
+  color: var(--d2h-dark-del-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-added {
+  color: var(--d2h-dark-ins-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-changed {
+  color: var(--d2h-dark-change-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-moved {
+  color: var(--d2h-dark-moved-label-color);
+}
+
+.d2h-dark-color-scheme .d2h-tag {
+  background-color: var(--d2h-dark-bg-color);
+}
+
+.d2h-dark-color-scheme .d2h-deleted-tag {
+  border: var(--d2h-dark-del-label-color) 1px solid;
+}
+
+.d2h-dark-color-scheme .d2h-added-tag {
+  border: var(--d2h-dark-ins-label-color) 1px solid;
+}
+
+.d2h-dark-color-scheme .d2h-changed-tag {
+  border: var(--d2h-dark-change-label-color) 1px solid;
+}
+
+.d2h-dark-color-scheme .d2h-moved-tag {
+  border: var(--d2h-dark-moved-label-color) 1px solid;
+}
+
+/**
+ * Auto Mode Colors
+ */
+@media (prefers-color-scheme: dark) {
+  .d2h-auto-color-scheme {
+    background-color: var(--d2h-dark-bg-color);
+    color: var(--d2h-dark-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-header {
+    background-color: var(--d2h-dark-file-header-bg-color);
+    border-bottom: var(--d2h-dark-file-header-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-lines-added {
+    border: 1px solid var(--d2h-dark-ins-border-color);
+    color: var(--d2h-dark-ins-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-lines-deleted {
+    border: 1px solid var(--d2h-dark-del-border-color);
+    color: var(--d2h-dark-del-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-code-line del,
+  .d2h-auto-color-scheme .d2h-code-side-line del {
+    background-color: var(--d2h-dark-del-highlight-bg-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-code-line ins,
+  .d2h-auto-color-scheme .d2h-code-side-line ins {
+    background-color: var(--d2h-dark-ins-highlight-bg-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-diff-tbody {
+    border-color: var(--d2h-dark-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-code-side-linenumber {
+    background-color: var(--d2h-dark-bg-color);
+    color: var(--d2h-dark-dim-color);
+    border-color: var(--d2h-dark-line-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-files-diff .d2h-code-side-emptyplaceholder,
+  .d2h-auto-color-scheme .d2h-files-diff .d2h-emptyplaceholder {
+    background-color: var(--d2h-dark-empty-placeholder-bg-color);
+    border-color: var(--d2h-dark-empty-placeholder-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-code-linenumber {
+    background-color: var(--d2h-dark-bg-color);
+    color: var(--d2h-dark-dim-color);
+    border-color: var(--d2h-dark-line-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-del {
+    background-color: var(--d2h-dark-del-bg-color);
+    border-color: var(--d2h-dark-del-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-ins {
+    background-color: var(--d2h-dark-ins-bg-color);
+    border-color: var(--d2h-dark-ins-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-info {
+    background-color: var(--d2h-dark-info-bg-color);
+    color: var(--d2h-dark-dim-color);
+    border-color: var(--d2h-dark-info-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-diff .d2h-del.d2h-change {
+    background-color: var(--d2h-dark-change-del-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-diff .d2h-ins.d2h-change {
+    background-color: var(--d2h-dark-change-ins-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-wrapper {
+    border: 1px solid var(--d2h-dark-border-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-collapse {
+    border: 1px solid var(--d2h-dark-bg-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-collapse.d2h-selected {
+    background-color: var(--d2h-dark-selected-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-list-wrapper a {
+    color: var(--d2h-dark-moved-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-list-wrapper a:visited {
+    color: var(--d2h-dark-moved-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-file-list > li {
+    border-bottom: var(--d2h-dark-bg-color) solid 1px;
+  }
+
+  .d2h-dark-color-scheme .d2h-deleted {
+    color: var(--d2h-dark-del-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-added {
+    color: var(--d2h-dark-ins-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-changed {
+    color: var(--d2h-dark-change-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-moved {
+    color: var(--d2h-dark-moved-label-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-tag {
+    background-color: var(--d2h-dark-bg-color);
+  }
+
+  .d2h-auto-color-scheme .d2h-deleted-tag {
+    border: var(--d2h-dark-del-label-color) 1px solid;
+  }
+
+  .d2h-auto-color-scheme .d2h-added-tag {
+    border: var(--d2h-dark-ins-label-color) 1px solid;
+  }
+
+  .d2h-auto-color-scheme .d2h-changed-tag {
+    border: var(--d2h-dark-change-label-color) 1px solid;
+  }
+
+  .d2h-auto-color-scheme .d2h-moved-tag {
+    border: var(--d2h-dark-moved-label-color) 1px solid;
+  }
+}

src/ui/js/diff2html-ui-base.ts

@@ -0,0 +1,225 @@
+import { closeTags, nodeStream, mergeStreams, getLanguage } from './highlight.js-helpers';
+
+import { html, Diff2HtmlConfig, defaultDiff2HtmlConfig } from '../../diff2html';
+import { DiffFile } from '../../types';
+import { HighlightResult, HLJSApi } from 'highlight.js';
+
+export interface Diff2HtmlUIConfig extends Diff2HtmlConfig {
+  synchronisedScroll?: boolean;
+  highlight?: boolean;
+  fileListToggle?: boolean;
+  fileListStartVisible?: boolean;
+  highlightLanguages?: Map<string, string>;
+  /**
+   * @deprecated since version 3.1.0
+   * Smart selection is now enabled by default with vanilla CSS
+   */
+  smartSelection?: boolean;
+  fileContentToggle?: boolean;
+  stickyFileHeaders?: boolean;
+}
+
+export const defaultDiff2HtmlUIConfig = {
+  ...defaultDiff2HtmlConfig,
+  synchronisedScroll: true,
+  highlight: true,
+  fileListToggle: true,
+  fileListStartVisible: false,
+  highlightLanguages: new Map<string, string>(),
+  /**
+   * @deprecated since version 3.1.0
+   * Smart selection is now enabled by default with vanilla CSS
+   */
+  smartSelection: true,
+  fileContentToggle: true,
+  stickyFileHeaders: true,
+};
+
+export class Diff2HtmlUI {
+  readonly config: typeof defaultDiff2HtmlUIConfig;
+  readonly diffHtml: string;
+  readonly targetElement: HTMLElement;
+  readonly hljs: HLJSApi | null = null;
+
+  currentSelectionColumnId = -1;
+
+  constructor(target: HTMLElement, diffInput?: string | DiffFile[], config: Diff2HtmlUIConfig = {}, hljs?: HLJSApi) {
+    this.config = { ...defaultDiff2HtmlUIConfig, ...config };
+    this.diffHtml = diffInput !== undefined ? html(diffInput, this.config) : target.innerHTML;
+    this.targetElement = target;
+    if (hljs !== undefined) this.hljs = hljs;
+  }
+
+  draw(): void {
+    this.targetElement.innerHTML = this.diffHtml;
+    if (this.config.synchronisedScroll) this.synchronisedScroll();
+    if (this.config.highlight) this.highlightCode();
+    if (this.config.fileListToggle) this.fileListToggle(this.config.fileListStartVisible);
+    if (this.config.fileContentToggle) this.fileContentToggle();
+    if (this.config.stickyFileHeaders) this.stickyFileHeaders();
+  }
+
+  synchronisedScroll(): void {
+    this.targetElement.querySelectorAll('.d2h-file-wrapper').forEach(wrapper => {
+      const [left, right] = Array<Element>().slice.call(wrapper.querySelectorAll('.d2h-file-side-diff'));
+
+      if (left === undefined || right === undefined) return;
+
+      const onScroll = (event: Event): void => {
+        if (event === null || event.target === null) return;
+
+        if (event.target === left) {
+          right.scrollTop = left.scrollTop;
+          right.scrollLeft = left.scrollLeft;
+        } else {
+          left.scrollTop = right.scrollTop;
+          left.scrollLeft = right.scrollLeft;
+        }
+      };
+      left.addEventListener('scroll', onScroll);
+      right.addEventListener('scroll', onScroll);
+    });
+  }
+
+  fileListToggle(startVisible: boolean): void {
+    const showBtn: HTMLElement | null = this.targetElement.querySelector('.d2h-show');
+    const hideBtn: HTMLElement | null = this.targetElement.querySelector('.d2h-hide');
+    const fileList: HTMLElement | null = this.targetElement.querySelector('.d2h-file-list');
+
+    if (showBtn === null || hideBtn === null || fileList === null) return;
+
+    const show: () => void = () => {
+      showBtn.style.display = 'none';
+      hideBtn.style.display = 'inline';
+      fileList.style.display = 'block';
+    };
+
+    const hide: () => void = () => {
+      showBtn.style.display = 'inline';
+      hideBtn.style.display = 'none';
+      fileList.style.display = 'none';
+    };
+
+    showBtn.addEventListener('click', () => show());
+    hideBtn.addEventListener('click', () => hide());
+
+    const hashTag = this.getHashTag();
+    if (hashTag === 'files-summary-show') show();
+    else if (hashTag === 'files-summary-hide') hide();
+    else if (startVisible) show();
+    else hide();
+  }
+
+  fileContentToggle(): void {
+    this.targetElement.querySelectorAll<HTMLElement>('.d2h-file-collapse').forEach(fileContentToggleBtn => {
+      fileContentToggleBtn.style.display = 'flex';
+
+      const toggleFileContents: (selector: string) => void = selector => {
+        const fileContents: HTMLElement | null | undefined = fileContentToggleBtn
+          .closest('.d2h-file-wrapper')
+          ?.querySelector(selector);
+
+        if (fileContents !== null && fileContents !== undefined) {
+          fileContentToggleBtn.classList.toggle('d2h-selected');
+          fileContents.classList.toggle('d2h-d-none');
+        }
+      };
+
+      const toggleHandler: (e: Event) => void = e => {
+        if (fileContentToggleBtn === e.target) return;
+
+        toggleFileContents('.d2h-file-diff');
+        toggleFileContents('.d2h-files-diff');
+      };
+
+      fileContentToggleBtn.addEventListener('click', e => toggleHandler(e));
+    });
+  }
+
+  highlightCode(): void {
+    const hljs = this.hljs;
+    if (hljs === null) {
+      throw new Error('Missing a `highlight.js` implementation. Please provide one when instantiating Diff2HtmlUI.');
+    }
+
+    // Collect all the diff files and execute the highlight on their lines
+    const files = this.targetElement.querySelectorAll('.d2h-file-wrapper');
+    files.forEach(file => {
+      const language = file.getAttribute('data-lang');
+
+      if (!(this.config.highlightLanguages instanceof Map)) {
+        this.config.highlightLanguages = new Map(Object.entries(this.config.highlightLanguages));
+      }
+
+      let hljsLanguage =
+        language && this.config.highlightLanguages.has(language)
+          ? this.config.highlightLanguages.get(language)!
+          : language
+            ? getLanguage(language)
+            : 'plaintext';
+
+      // Fallback to plaintext in case language is not loaded
+      if (hljs.getLanguage(hljsLanguage) === undefined) {
+        hljsLanguage = 'plaintext';
+      }
+
+      // Collect all the code lines and execute the highlight on them
+      const codeLines = file.querySelectorAll('.d2h-code-line-ctn');
+      codeLines.forEach(line => {
+        const text = line.textContent;
+        const lineParent = line.parentNode;
+
+        if (text === null || lineParent === null || !this.isElement(lineParent)) return;
+
+        const result: HighlightResult = closeTags(
+          hljs.highlight(text, {
+            language: hljsLanguage,
+            ignoreIllegals: true,
+          }),
+        );
+
+        const originalStream = nodeStream(line);
+        if (originalStream.length) {
+          const resultNode = document.createElementNS('http://www.w3.org/1999/xhtml', 'div');
+          resultNode.innerHTML = result.value;
+          result.value = mergeStreams(originalStream, nodeStream(resultNode), text);
+        }
+
+        line.classList.add('hljs');
+        if (result.language) {
+          line.classList.add(result.language);
+        }
+        line.innerHTML = result.value;
+      });
+    });
+  }
+
+  stickyFileHeaders(): void {
+    this.targetElement.querySelectorAll('.d2h-file-header').forEach(header => {
+      header.classList.add('d2h-sticky-header');
+    });
+  }
+
+  /**
+   * @deprecated since version 3.1.0
+   */
+  smartSelection(): void {
+    console.warn('Smart selection is now enabled by default with CSS. No need to call this method anymore.');
+  }
+
+  private getHashTag(): string | null {
+    const docUrl = document.URL;
+    const hashTagIndex = docUrl.indexOf('#');
+
+    let hashTag = null;
+    if (hashTagIndex !== -1) {
+      hashTag = docUrl.substr(hashTagIndex + 1);
+    }
+
+    return hashTag;
+  }
+
+  private isElement(arg?: unknown): arg is Element {
+    return arg !== null && (arg as Element)?.classList !== undefined;
+  }
+}

src/ui/js/diff2html-ui-slim.ts

@@ -0,0 +1,13 @@
+import { hljs } from './highlight.js-slim';
+
+import { DiffFile } from '../../types';
+import { Diff2HtmlUI as Diff2HtmlUIBase, Diff2HtmlUIConfig, defaultDiff2HtmlUIConfig } from './diff2html-ui-base';
+
+export class Diff2HtmlUI extends Diff2HtmlUIBase {
+  constructor(target: HTMLElement, diffInput?: string | DiffFile[], config: Diff2HtmlUIConfig = {}) {
+    super(target, diffInput, config, hljs);
+  }
+}
+
+export { defaultDiff2HtmlUIConfig };
+export type { Diff2HtmlUIConfig };

src/ui/js/diff2html-ui.ts

@@ -0,0 +1,13 @@
+import hljs from 'highlight.js';
+
+import { DiffFile } from '../../types';
+import { Diff2HtmlUI as Diff2HtmlUIBase, Diff2HtmlUIConfig, defaultDiff2HtmlUIConfig } from './diff2html-ui-base';
+
+export class Diff2HtmlUI extends Diff2HtmlUIBase {
+  constructor(target: HTMLElement, diffInput?: string | DiffFile[], config: Diff2HtmlUIConfig = {}) {
+    super(target, diffInput, config, hljs);
+  }
+}
+
+export { defaultDiff2HtmlUIConfig };
+export type { Diff2HtmlUIConfig };

src/ui/js/highlight.js-helpers.ts

@@ -0,0 +1,655 @@
+/*
+ * Adapted Highlight.js Internal APIs
+ * Used to highlight selected html elements using context
+ */
+
+import { HighlightResult } from 'highlight.js';
+
+/* Utility functions */
+
+function escapeHTML(value: string): string {
+  return value.replace(/&/gm, '&amp;').replace(/</gm, '&lt;').replace(/>/gm, '&gt;');
+}
+
+function tag(node: Node): string {
+  return node.nodeName.toLowerCase();
+}
+
+/* Stream merging */
+
+type NodeEvent = {
+  event: 'start' | 'stop';
+  offset: number;
+  node: Node;
+};
+
+export function nodeStream(node: Node): NodeEvent[] {
+  const result: NodeEvent[] = [];
+
+  const nodeStream = (node: Node, offset: number): number => {
+    for (let child = node.firstChild; child; child = child.nextSibling) {
+      if (child.nodeType === 3 && child.nodeValue !== null) {
+        offset += child.nodeValue.length;
+      } else if (child.nodeType === 1) {
+        result.push({
+          event: 'start',
+          offset: offset,
+          node: child,
+        });
+        offset = nodeStream(child, offset);
+        // Prevent void elements from having an end tag that would actually
+        // double them in the output. There are more void elements in HTML
+        // but we list only those realistically expected in code display.
+        if (!tag(child).match(/br|hr|img|input/)) {
+          result.push({
+            event: 'stop',
+            offset: offset,
+            node: child,
+          });
+        }
+      }
+    }
+    return offset;
+  };
+
+  nodeStream(node, 0);
+
+  return result;
+}
+
+export function mergeStreams(original: NodeEvent[], highlighted: NodeEvent[], value: string): string {
+  let processed = 0;
+  let result = '';
+  const nodeStack = [];
+
+  function isElement(arg?: unknown): arg is Element {
+    return arg !== null && (arg as Element)?.attributes !== undefined;
+  }
+
+  function selectStream(): NodeEvent[] {
+    if (!original.length || !highlighted.length) {
+      return original.length ? original : highlighted;
+    }
+    if (original[0].offset !== highlighted[0].offset) {
+      return original[0].offset < highlighted[0].offset ? original : highlighted;
+    }
+
+    /*
+       To avoid starting the stream just before it should stop the order is
+       ensured that original always starts first and closes last:
+       if (event1 == 'start' && event2 == 'start')
+       return original;
+       if (event1 == 'start' && event2 == 'stop')
+       return highlighted;
+       if (event1 == 'stop' && event2 == 'start')
+       return original;
+       if (event1 == 'stop' && event2 == 'stop')
+       return highlighted;
+       ... which is collapsed to:
+       */
+    return highlighted[0].event === 'start' ? original : highlighted;
+  }
+
+  function open(node: Node): void {
+    if (!isElement(node)) {
+      throw new Error('Node is not an Element');
+    }
+
+    result += `<${tag(node)} ${Array<Attr>()
+      .map.call(node.attributes, attr => `${attr.nodeName}="${escapeHTML(attr.value).replace(/"/g, '&quot;')}"`)
+      .join(' ')}>`;
+  }
+
+  function close(node: Node): void {
+    result += '</' + tag(node) + '>';
+  }
+
+  function render(event: NodeEvent): void {
+    (event.event === 'start' ? open : close)(event.node);
+  }
+
+  while (original.length || highlighted.length) {
+    let stream = selectStream();
+    result += escapeHTML(value.substring(processed, stream[0].offset));
+    processed = stream[0].offset;
+    if (stream === original) {
+      /*
+         On any opening or closing tag of the original markup we first close
+         the entire highlighted node stack, then render the original tag along
+         with all the following original tags at the same offset and then
+         reopen all the tags on the highlighted stack.
+         */
+      nodeStack.reverse().forEach(close);
+      do {
+        render(stream.splice(0, 1)[0]);
+        stream = selectStream();
+      } while (stream === original && stream.length && stream[0].offset === processed);
+      nodeStack.reverse().forEach(open);
+    } else {
+      if (stream[0].event === 'start') {
+        nodeStack.push(stream[0].node);
+      } else {
+        nodeStack.pop();
+      }
+      render(stream.splice(0, 1)[0]);
+    }
+  }
+
+  return result + escapeHTML(value.substr(processed));
+}
+
+// https://github.com/hexojs/hexo-util/blob/979873b63a725377c2bd6ad834d790023496130d/lib/highlight.js#L123
+export function closeTags(res: HighlightResult): HighlightResult {
+  const tokenStack = new Array<string>();
+
+  res.value = res.value
+    .split('\n')
+    .map(line => {
+      const prepend = tokenStack.map(token => `<span class="${token}">`).join('');
+      const matches = line.matchAll(/(<span class="(.*?)">|<\/span>)/g);
+      Array.from(matches).forEach(match => {
+        if (match[0] === '</span>') tokenStack.shift();
+        else tokenStack.unshift(match[2]);
+      });
+      const append = '</span>'.repeat(tokenStack.length);
+      return prepend + line + append;
+    })
+    .join('\n');
+
+  return res;
+}
+
+// Sourced from https://github.com/highlightjs/highlight.js/blob/main/SUPPORTED_LANGUAGES.md and
+// https://github.com/exercism/v2-website/blob/main/config/initializers/prism.rb#L187-L315
+const languagesToExt: { [_: string]: string } = {
+  '1c': '1c',
+  abnf: 'abnf',
+  accesslog: 'accesslog',
+  as: 'actionscript',
+  adb: 'ada',
+  ada: 'ada',
+  ads: 'ada',
+  angelscript: 'angelscript',
+  // asc: 'angelscript',
+  apache: 'apache',
+  applescript: 'applescript',
+  scpt: 'applescript',
+  arcade: 'arcade',
+  cpp: 'cpp',
+  hpp: 'cpp',
+  arduino: 'arduino',
+  ino: 'arduino',
+  armasm: 'armasm',
+  arm: 'armasm',
+  xml: 'xml',
+  html: 'xml',
+  xhtml: 'xml',
+  rss: 'xml',
+  atom: 'xml',
+  xjb: 'xml',
+  xsd: 'xml',
+  xsl: 'xml',
+  plist: 'xml',
+  svg: 'xml',
+  asciidoc: 'asciidoc',
+  adoc: 'asciidoc',
+  asc: 'asciidoc',
+  aspectj: 'aspectj',
+  ahk: 'autohotkey',
+  ahkl: 'autohotkey',
+  au3: 'autoit',
+  avrasm: 'avrasm',
+  awk: 'awk',
+  axapta: 'axapta',
+  'x++': 'axapta',
+  bash: 'bash',
+  sh: 'bash',
+  zsh: 'bash',
+  b: 'basic',
+  bnf: 'bnf',
+  bf: 'brainfuck',
+  c: 'c',
+  h: 'c',
+  cats: 'c',
+  idc: 'c',
+  cal: 'cal',
+  capnproto: 'capnproto',
+  capnp: 'capnproto',
+  ceylon: 'ceylon',
+  clean: 'clean',
+  clj: 'clojure',
+  boot: 'clojure',
+  cl2: 'clojure',
+  cljc: 'clojure',
+  cljs: 'clojure',
+  'cljs.hl': 'clojure',
+  cljscm: 'clojure',
+  cljx: 'clojure',
+  hic: 'clojure',
+  'clojure-repl': 'clojure-repl',
+  cmake: 'cmake',
+  'cmake.in': 'cmake',
+  coffee: 'coffeescript',
+  _coffee: 'coffeescript',
+  cake: 'coffeescript',
+  cjsx: 'coffeescript',
+  iced: 'coffeescript',
+  cson: 'coffeescript',
+  coq: 'coq',
+  cos: 'cos',
+  cls: 'cos',
+  crmsh: 'crmsh',
+  crm: 'crmsh',
+  pcmk: 'crmsh',
+  cr: 'crystal',
+  cs: 'csharp',
+  csx: 'csharp',
+  csp: 'csp',
+  css: 'css',
+  d: 'd',
+  di: 'd',
+  md: 'markdown',
+  markdown: 'markdown',
+  mdown: 'markdown',
+  mdwn: 'markdown',
+  mkd: 'markdown',
+  mkdn: 'markdown',
+  mkdown: 'markdown',
+  ronn: 'markdown',
+  workbook: 'markdown',
+  dart: 'dart',
+  dpr: 'delphi',
+  dfm: 'delphi',
+  pas: 'delphi',
+  pascal: 'delphi',
+  diff: 'diff',
+  patch: 'diff',
+  django: 'django',
+  jinja: 'django',
+  dns: 'dns',
+  zone: 'dns',
+  bind: 'dns',
+  dockerfile: 'dockerfile',
+  docker: 'dockerfile',
+  dos: 'dos',
+  bat: 'dos',
+  cmd: 'dos',
+  dsconfig: 'dsconfig',
+  dts: 'dts',
+  dust: 'dust',
+  dst: 'dust',
+  ebnf: 'ebnf',
+  ex: 'elixir',
+  exs: 'elixir',
+  elm: 'elm',
+  rb: 'ruby',
+  builder: 'ruby',
+  eye: 'ruby',
+  gemspec: 'ruby',
+  god: 'ruby',
+  jbuilder: 'ruby',
+  mspec: 'ruby',
+  pluginspec: 'ruby',
+  podspec: 'ruby',
+  rabl: 'ruby',
+  rake: 'ruby',
+  rbuild: 'ruby',
+  rbw: 'ruby',
+  rbx: 'ruby',
+  ru: 'ruby',
+  ruby: 'ruby',
+  spec: 'ruby',
+  thor: 'ruby',
+  watchr: 'ruby',
+  erb: 'erb',
+  'erlang-repl': 'erlang-repl',
+  erl: 'erlang',
+  'app.src': 'erlang',
+  escript: 'erlang',
+  hrl: 'erlang',
+  xrl: 'erlang',
+  yrl: 'erlang',
+  excel: 'excel',
+  xls: 'excel',
+  xlsx: 'excel',
+  fix: 'fix',
+  flix: 'flix',
+  f90: 'fortran',
+  f: 'fortran',
+  f03: 'fortran',
+  f08: 'fortran',
+  f77: 'fortran',
+  f95: 'fortran',
+  for: 'fortran',
+  fpp: 'fortran',
+  fs: 'fsharp',
+  fsx: 'fsharp',
+  gams: 'gams',
+  gms: 'gams',
+  gauss: 'gauss',
+  gss: 'gauss',
+  gcode: 'gcode',
+  nc: 'gcode',
+  gherkin: 'gherkin',
+  glsl: 'glsl',
+  fp: 'glsl',
+  frag: 'glsl',
+  frg: 'glsl',
+  fsh: 'glsl',
+  fshader: 'glsl',
+  geo: 'glsl',
+  geom: 'glsl',
+  glslv: 'glsl',
+  gshader: 'glsl',
+  shader: 'glsl',
+  tesc: 'glsl',
+  tese: 'glsl',
+  vert: 'glsl',
+  vrx: 'glsl',
+  vsh: 'glsl',
+  vshader: 'glsl',
+  gml: 'gml',
+  go: 'go',
+  bal: 'go',
+  golo: 'golo',
+  gololang: 'golo',
+  gradle: 'gradle',
+  groovy: 'groovy',
+  grt: 'groovy',
+  gtpl: 'groovy',
+  gvy: 'groovy',
+  haml: 'haml',
+  'haml.deface': 'haml',
+  handlebars: 'handlebars',
+  hbs: 'handlebars',
+  'html.hbs': 'handlebars',
+  'html.handlebars': 'handlebars',
+  hs: 'haskell',
+  hsc: 'haskell',
+  idr: 'haskell',
+  purs: 'haskell',
+  hx: 'haxe',
+  hxsl: 'haxe',
+  hsp: 'hsp',
+  htmlbars: 'htmlbars',
+  http: 'http',
+  https: 'http',
+  hy: 'hy',
+  inform7: 'inform7',
+  i7: 'inform7',
+  ini: 'ini',
+  toml: 'ini',
+  cfg: 'ini',
+  prefs: 'ini',
+  // properties: 'ini',
+  irpf90: 'irpf90',
+  isbl: 'isbl',
+  java: 'java',
+  jsp: 'java',
+  js: 'javascript',
+  jsx: 'javascript',
+  _js: 'javascript',
+  bones: 'javascript',
+  es: 'javascript',
+  es6: 'javascript',
+  gs: 'javascript',
+  jake: 'javascript',
+  jsb: 'javascript',
+  jscad: 'javascript',
+  jsfl: 'javascript',
+  jsm: 'javascript',
+  jss: 'javascript',
+  mjs: 'javascript',
+  njs: 'javascript',
+  pac: 'javascript',
+  sjs: 'javascript',
+  ssjs: 'javascript',
+  xsjs: 'javascript',
+  xsjslib: 'javascript',
+  cfc: 'javascript',
+  'jboss-cli': 'jboss-cli',
+  json: 'json',
+  avsc: 'json',
+  geojson: 'json',
+  gltf: 'json',
+  'JSON-tmLanguage': 'json',
+  jsonl: 'json',
+  tfstate: 'json',
+  'tfstate.backup': 'json',
+  topojson: 'json',
+  webapp: 'json',
+  webmanifest: 'json',
+  jl: 'julia',
+  'julia-repl': 'julia-repl',
+  kt: 'kotlin',
+  ktm: 'kotlin',
+  kts: 'kotlin',
+  lasso: 'lasso',
+  // ls: 'lasso',
+  lassoscript: 'lasso',
+  tex: 'latex',
+  ldif: 'ldif',
+  leaf: 'leaf',
+  less: 'less',
+  lisp: 'lisp',
+  factor: 'lisp',
+  livecodeserver: 'livecodeserver',
+  ls: 'livescript',
+  _ls: 'livescript',
+  llvm: 'llvm',
+  lsl: 'lsl',
+  lua: 'lua',
+  nse: 'lua',
+  p8: 'lua',
+  pd_lua: 'lua',
+  rbxs: 'lua',
+  wlua: 'lua',
+  mak: 'makefile',
+  make: 'makefile',
+  mk: 'makefile',
+  mkfile: 'makefile',
+  mathematica: 'mathematica',
+  mma: 'mathematica',
+  wl: 'mathematica',
+  matlab: 'matlab',
+  maxima: 'maxima',
+  mel: 'mel',
+  mercury: 'mercury',
+  mipsasm: 'mipsasm',
+  miz: 'mizar',
+  voc: 'mizar',
+  al: 'perl',
+  cgi: 'perl',
+  fcgi: 'perl',
+  perl: 'perl',
+  ph: 'perl',
+  plx: 'perl',
+  pl: 'perl',
+  pm: 'perl',
+  psgi: 'perl',
+  t: 'perl',
+  mojolicious: 'mojolicious',
+  monkey: 'monkey',
+  monkey2: 'monkey',
+  moonscript: 'moonscript',
+  moon: 'moonscript',
+  n1ql: 'n1ql',
+  nginxconf: 'nginx',
+  nim: 'nim',
+  nimrod: 'nim',
+  nix: 'nix',
+  nsi: 'nsis',
+  nsh: 'nsis',
+  m: 'objectivec',
+  objc: 'objectivec',
+  mm: 'objectivec',
+  'obj-c': 'objectivec',
+  'obj-c++': 'objectivec',
+  'objective-c++': 'objectivec',
+  fun: 'ocaml',
+  sig: 'ocaml',
+  // sml: 'ocaml',
+  ml: 'ocaml',
+  mli: 'ocaml',
+  eliom: 'ocaml',
+  eliomi: 'ocaml',
+  ml4: 'ocaml',
+  mll: 'ocaml',
+  mly: 'ocaml',
+  openscad: 'openscad',
+  oxygene: 'oxygene',
+  parser3: 'parser3',
+  pf: 'pf',
+  'pf.conf': 'pf',
+  pgsql: 'pgsql',
+  postgres: 'pgsql',
+  postgresql: 'pgsql',
+  php: 'php',
+  aw: 'php',
+  ctp: 'php',
+  inc: 'php',
+  php3: 'php',
+  php4: 'php',
+  php5: 'php',
+  phps: 'php',
+  phpt: 'php',
+  'php-template': 'php-template',
+  plaintext: 'plaintext',
+  txt: 'plaintext',
+  text: 'plaintext',
+  pony: 'pony',
+  ps: 'powershell',
+  ps1: 'powershell',
+  psd1: 'powershell',
+  psm1: 'powershell',
+  pde: 'processing',
+  profile: 'profile',
+  pro: 'prolog',
+  prolog: 'prolog',
+  yap: 'prolog',
+  properties: 'properties',
+  proto: 'protobuf',
+  puppet: 'puppet',
+  pp: 'puppet',
+  purebasic: 'purebasic',
+  py: 'python',
+  bzl: 'python',
+  gyp: 'python',
+  gypi: 'python',
+  lmi: 'python',
+  py3: 'python',
+  pyde: 'python',
+  pyi: 'python',
+  pyp: 'python',
+  pyt: 'python',
+  pyw: 'python',
+  rpy: 'python',
+  tac: 'python',
+  wsgi: 'python',
+  xpy: 'python',
+  'python-repl': 'python-repl',
+  pycon: 'python-repl',
+  q: 'q',
+  k: 'q',
+  kdb: 'q',
+  qml: 'qml',
+  r: 'r',
+  rd: 'r',
+  rsx: 'r',
+  reasonml: 'reasonml',
+  re: 'reasonml',
+  rib: 'rib',
+  roboconf: 'roboconf',
+  graph: 'roboconf',
+  instances: 'roboconf',
+  routeros: 'routeros',
+  rsl: 'rsl',
+  ruleslanguage: 'ruleslanguage',
+  rs: 'rust',
+  'rs.in': 'rust',
+  sas: 'sas',
+  // pony: 'scala',
+  scala: 'scala',
+  kojo: 'scala',
+  sbt: 'scala',
+  sc: 'scala',
+  scm: 'scheme',
+  sch: 'scheme',
+  sld: 'scheme',
+  sls: 'scheme',
+  sps: 'scheme',
+  ss: 'scheme',
+  rkt: 'scheme',
+  scilab: 'scilab',
+  scss: 'scss',
+  shell: 'shell',
+  smali: 'smali',
+  st: 'smalltalk',
+  sml: 'sml',
+  sqf: 'sqf',
+  sql: 'sql',
+  cql: 'sql',
+  ddl: 'sql',
+  mysql: 'sql',
+  prc: 'sql',
+  tab: 'sql',
+  udf: 'sql',
+  viw: 'sql',
+  stan: 'stan',
+  stanfuncs: 'stan',
+  stata: 'stata',
+  step21: 'step21',
+  step: 'step21',
+  stp: 'step21',
+  styl: 'stylus',
+  subunit: 'subunit',
+  swift: 'swift',
+  taggerscript: 'taggerscript',
+  yml: 'yaml',
+  mir: 'yaml',
+  reek: 'yaml',
+  rviz: 'yaml',
+  'sublime-syntax': 'yaml',
+  syntax: 'yaml',
+  yaml: 'yaml',
+  'yaml-tmlanguage': 'yaml',
+  'yml.mysql': 'yaml',
+  tap: 'tap',
+  tcl: 'tcl',
+  adp: 'tcl',
+  tm: 'tcl',
+  thrift: 'thrift',
+  tp: 'tp',
+  twig: 'twig',
+  craftcms: 'twig',
+  ts: 'typescript',
+  tsx: 'typescript',
+  vala: 'vala',
+  vbnet: 'vbnet',
+  vb: 'vbnet',
+  vbscript: 'vbscript',
+  vbs: 'vbscript',
+  'vbscript-html': 'vbscript-html',
+  v: 'verilog',
+  veo: 'verilog',
+  vhdl: 'vhdl',
+  vhd: 'vhdl',
+  vhf: 'vhdl',
+  vhi: 'vhdl',
+  vho: 'vhdl',
+  vhs: 'vhdl',
+  vht: 'vhdl',
+  vhw: 'vhdl',
+  vim: 'vim',
+  x86asm: 'x86asm',
+  xl: 'xl',
+  xquery: 'xquery',
+  xpath: 'xquery',
+  xq: 'xquery',
+  zephir: 'zephir',
+  zep: 'zephir',
+};
+
+export function getLanguage(fileExtension: string): string {
+  return languagesToExt[fileExtension] ?? 'plaintext';
+}

src/ui/js/highlight.js-slim.ts

@@ -0,0 +1,391 @@
+// Require the highlight.js library without languages
+import highlightJS from 'highlight.js/lib/core';
+
+// Convert to imports
+// ^hljs\.registerLanguage\('(.+)', require\('\./languages\/(.+)'\)\);$
+// import $1 from 'highlight.js/lib/languages/$2';
+
+// import _1c from 'highlight.js/lib/languages/1c';
+// import abnf from 'highlight.js/lib/languages/abnf';
+// import accesslog from 'highlight.js/lib/languages/accesslog';
+// import actionscript from 'highlight.js/lib/languages/actionscript';
+// import ada from 'highlight.js/lib/languages/ada';
+// import angelscript from 'highlight.js/lib/languages/angelscript';
+// import apache from 'highlight.js/lib/languages/apache';
+// import applescript from 'highlight.js/lib/languages/applescript';
+// import arcade from 'highlight.js/lib/languages/arcade';
+import cpp from 'highlight.js/lib/languages/cpp';
+// import arduino from 'highlight.js/lib/languages/arduino';
+// import armasm from 'highlight.js/lib/languages/armasm';
+import xml from 'highlight.js/lib/languages/xml';
+// import asciidoc from 'highlight.js/lib/languages/asciidoc';
+// import aspectj from 'highlight.js/lib/languages/aspectj';
+// import autohotkey from 'highlight.js/lib/languages/autohotkey';
+// import autoit from 'highlight.js/lib/languages/autoit';
+// import avrasm from 'highlight.js/lib/languages/avrasm';
+import awk from 'highlight.js/lib/languages/awk';
+// import axapta from 'highlight.js/lib/languages/axapta';
+import bash from 'highlight.js/lib/languages/bash';
+// import basic from 'highlight.js/lib/languages/basic';
+// import bnf from 'highlight.js/lib/languages/bnf';
+// import brainfuck from 'highlight.js/lib/languages/brainfuck';
+import c from 'highlight.js/lib/languages/c';
+// import cal from 'highlight.js/lib/languages/cal';
+// import capnproto from 'highlight.js/lib/languages/capnproto';
+// import ceylon from 'highlight.js/lib/languages/ceylon';
+// import clean from 'highlight.js/lib/languages/clean';
+import clojure from 'highlight.js/lib/languages/clojure';
+// import clojureRepl from 'highlight.js/lib/languages/clojure-repl';
+// import cmake from 'highlight.js/lib/languages/cmake';
+// import coffeescript from 'highlight.js/lib/languages/coffeescript';
+// import coq from 'highlight.js/lib/languages/coq';
+// import cos from 'highlight.js/lib/languages/cos';
+// import crmsh from 'highlight.js/lib/languages/crmsh';
+import crystal from 'highlight.js/lib/languages/crystal';
+import csharp from 'highlight.js/lib/languages/csharp';
+import csp from 'highlight.js/lib/languages/csp';
+import css from 'highlight.js/lib/languages/css';
+// import d from 'highlight.js/lib/languages/d';
+import markdown from 'highlight.js/lib/languages/markdown';
+import dart from 'highlight.js/lib/languages/dart';
+// import delphi from 'highlight.js/lib/languages/delphi';
+import diff from 'highlight.js/lib/languages/diff';
+// import django from 'highlight.js/lib/languages/django';
+// import dns from 'highlight.js/lib/languages/dns';
+import dockerfile from 'highlight.js/lib/languages/dockerfile';
+// import dos from 'highlight.js/lib/languages/dos';
+// import dsconfig from 'highlight.js/lib/languages/dsconfig';
+// import dts from 'highlight.js/lib/languages/dts';
+// import dust from 'highlight.js/lib/languages/dust';
+// import ebnf from 'highlight.js/lib/languages/ebnf';
+import elixir from 'highlight.js/lib/languages/elixir';
+import elm from 'highlight.js/lib/languages/elm';
+import ruby from 'highlight.js/lib/languages/ruby';
+// import erb from 'highlight.js/lib/languages/erb';
+// import erlangRepl from 'highlight.js/lib/languages/erlang-repl';
+import erlang from 'highlight.js/lib/languages/erlang';
+// import excel from 'highlight.js/lib/languages/excel';
+// import fix from 'highlight.js/lib/languages/fix';
+// import flix from 'highlight.js/lib/languages/flix';
+// import fortran from 'highlight.js/lib/languages/fortran';
+import fsharp from 'highlight.js/lib/languages/fsharp';
+// import gams from 'highlight.js/lib/languages/gams';
+// import gauss from 'highlight.js/lib/languages/gauss';
+// import gcode from 'highlight.js/lib/languages/gcode';
+// import gherkin from 'highlight.js/lib/languages/gherkin';
+// import glsl from 'highlight.js/lib/languages/glsl';
+// import gml from 'highlight.js/lib/languages/gml';
+import go from 'highlight.js/lib/languages/go';
+// import golo from 'highlight.js/lib/languages/golo';
+import gradle from 'highlight.js/lib/languages/gradle';
+import groovy from 'highlight.js/lib/languages/groovy';
+// import haml from 'highlight.js/lib/languages/haml';
+import handlebars from 'highlight.js/lib/languages/handlebars';
+import haskell from 'highlight.js/lib/languages/haskell';
+// import haxe from 'highlight.js/lib/languages/haxe';
+// import hsp from 'highlight.js/lib/languages/hsp';
+// import htmlbars from 'highlight.js/lib/languages/htmlbars';
+// import http from 'highlight.js/lib/languages/http';
+// import hy from 'highlight.js/lib/languages/hy';
+// import inform7 from 'highlight.js/lib/languages/inform7';
+import ini from 'highlight.js/lib/languages/ini';
+// import irpf90 from 'highlight.js/lib/languages/irpf90';
+// import isbl from 'highlight.js/lib/languages/isbl';
+import java from 'highlight.js/lib/languages/java';
+import javascript from 'highlight.js/lib/languages/javascript';
+// import jbossCli from 'highlight.js/lib/languages/jboss-cli';
+import json from 'highlight.js/lib/languages/json';
+// import julia from 'highlight.js/lib/languages/julia';
+// import juliaRepl from 'highlight.js/lib/languages/julia-repl';
+import kotlin from 'highlight.js/lib/languages/kotlin';
+// import lasso from 'highlight.js/lib/languages/lasso';
+// import latex from 'highlight.js/lib/languages/latex';
+// import ldif from 'highlight.js/lib/languages/ldif';
+// import leaf from 'highlight.js/lib/languages/leaf';
+import less from 'highlight.js/lib/languages/less';
+import lisp from 'highlight.js/lib/languages/lisp';
+// import livecodeserver from 'highlight.js/lib/languages/livecodeserver';
+// import livescript from 'highlight.js/lib/languages/livescript';
+// import llvm from 'highlight.js/lib/languages/llvm';
+// import lsl from 'highlight.js/lib/languages/lsl';
+import lua from 'highlight.js/lib/languages/lua';
+import makefile from 'highlight.js/lib/languages/makefile';
+// import mathematica from 'highlight.js/lib/languages/mathematica';
+// import matlab from 'highlight.js/lib/languages/matlab';
+// import maxima from 'highlight.js/lib/languages/maxima';
+// import mel from 'highlight.js/lib/languages/mel';
+// import mercury from 'highlight.js/lib/languages/mercury';
+// import mipsasm from 'highlight.js/lib/languages/mipsasm';
+// import mizar from 'highlight.js/lib/languages/mizar';
+import perl from 'highlight.js/lib/languages/perl';
+// import mojolicious from 'highlight.js/lib/languages/mojolicious';
+// import monkey from 'highlight.js/lib/languages/monkey';
+// import moonscript from 'highlight.js/lib/languages/moonscript';
+// import n1ql from 'highlight.js/lib/languages/n1ql';
+import nginx from 'highlight.js/lib/languages/nginx';
+// import nim from 'highlight.js/lib/languages/nim';
+// import nix from 'highlight.js/lib/languages/nix';
+// import nsis from 'highlight.js/lib/languages/nsis';
+import objectivec from 'highlight.js/lib/languages/objectivec';
+// import ocaml from 'highlight.js/lib/languages/ocaml';
+// import openscad from 'highlight.js/lib/languages/openscad';
+// import oxygene from 'highlight.js/lib/languages/oxygene';
+// import parser3 from 'highlight.js/lib/languages/parser3';
+// import pf from 'highlight.js/lib/languages/pf';
+import pgsql from 'highlight.js/lib/languages/pgsql';
+import php from 'highlight.js/lib/languages/php';
+// import phpTemplate from 'highlight.js/lib/languages/php-template';
+import plaintext from 'highlight.js/lib/languages/plaintext';
+// import pony from 'highlight.js/lib/languages/pony';
+import powershell from 'highlight.js/lib/languages/powershell';
+// import processing from 'highlight.js/lib/languages/processing';
+// import profile from 'highlight.js/lib/languages/profile';
+// import prolog from 'highlight.js/lib/languages/prolog';
+import properties from 'highlight.js/lib/languages/properties';
+import protobuf from 'highlight.js/lib/languages/protobuf';
+// import puppet from 'highlight.js/lib/languages/puppet';
+// import purebasic from 'highlight.js/lib/languages/purebasic';
+import python from 'highlight.js/lib/languages/python';
+// import pythonRepl from 'highlight.js/lib/languages/python-repl';
+// import q from 'highlight.js/lib/languages/q';
+// import qml from 'highlight.js/lib/languages/qml';
+// import r from 'highlight.js/lib/languages/r';
+// import reasonml from 'highlight.js/lib/languages/reasonml';
+// import rib from 'highlight.js/lib/languages/rib';
+// import roboconf from 'highlight.js/lib/languages/roboconf';
+// import routeros from 'highlight.js/lib/languages/routeros';
+// import rsl from 'highlight.js/lib/languages/rsl';
+// import ruleslanguage from 'highlight.js/lib/languages/ruleslanguage';
+import rust from 'highlight.js/lib/languages/rust';
+// import sas from 'highlight.js/lib/languages/sas';
+import scala from 'highlight.js/lib/languages/scala';
+// import scheme from 'highlight.js/lib/languages/scheme';
+// import scilab from 'highlight.js/lib/languages/scilab';
+import scss from 'highlight.js/lib/languages/scss';
+import shell from 'highlight.js/lib/languages/shell';
+// import smali from 'highlight.js/lib/languages/smali';
+// import smalltalk from 'highlight.js/lib/languages/smalltalk';
+// import sml from 'highlight.js/lib/languages/sml';
+// import sqf from 'highlight.js/lib/languages/sqf';
+import sql from 'highlight.js/lib/languages/sql';
+// import stan from 'highlight.js/lib/languages/stan';
+// import stata from 'highlight.js/lib/languages/stata';
+// import step21 from 'highlight.js/lib/languages/step21';
+// import stylus from 'highlight.js/lib/languages/stylus';
+// import subunit from 'highlight.js/lib/languages/subunit';
+import swift from 'highlight.js/lib/languages/swift';
+// import taggerscript from 'highlight.js/lib/languages/taggerscript';
+import yaml from 'highlight.js/lib/languages/yaml';
+// import tap from 'highlight.js/lib/languages/tap';
+// import tcl from 'highlight.js/lib/languages/tcl';
+// import thrift from 'highlight.js/lib/languages/thrift';
+// import tp from 'highlight.js/lib/languages/tp';
+// import twig from 'highlight.js/lib/languages/twig';
+import typescript from 'highlight.js/lib/languages/typescript';
+// import vala from 'highlight.js/lib/languages/vala';
+// import vbnet from 'highlight.js/lib/languages/vbnet';
+// import vbscript from 'highlight.js/lib/languages/vbscript';
+// import vbscriptHtml from 'highlight.js/lib/languages/vbscript-html';
+// import verilog from 'highlight.js/lib/languages/verilog';
+// import vhdl from 'highlight.js/lib/languages/vhdl';
+// import vim from 'highlight.js/lib/languages/vim';
+// import x86asm from 'highlight.js/lib/languages/x86asm';
+// import xl from 'highlight.js/lib/languages/xl';
+// import xquery from 'highlight.js/lib/languages/xquery';
+// import zephir from 'highlight.js/lib/languages/zephir';
+
+// Convert to registerLanguage
+// ^hljs\.registerLanguage\('(.+)', require\('\./languages\/(.+)'\)\);$
+// highlightJS.registerLanguage('$1', $1);
+
+// Separately require languages
+// highlightJS.registerLanguage('1c', _1c);
+// highlightJS.registerLanguage('abnf', abnf);
+// highlightJS.registerLanguage('accesslog', accesslog);
+// highlightJS.registerLanguage('actionscript', actionscript);
+// highlightJS.registerLanguage('ada', ada);
+// highlightJS.registerLanguage('angelscript', angelscript);
+// highlightJS.registerLanguage('apache', apache);
+// highlightJS.registerLanguage('applescript', applescript);
+// highlightJS.registerLanguage('arcade', arcade);
+highlightJS.registerLanguage('cpp', cpp);
+// highlightJS.registerLanguage('arduino', arduino);
+// highlightJS.registerLanguage('armasm', armasm);
+highlightJS.registerLanguage('xml', xml);
+// highlightJS.registerLanguage('asciidoc', asciidoc);
+// highlightJS.registerLanguage('aspectj', aspectj);
+// highlightJS.registerLanguage('autohotkey', autohotkey);
+// highlightJS.registerLanguage('autoit', autoit);
+// highlightJS.registerLanguage('avrasm', avrasm);
+highlightJS.registerLanguage('awk', awk);
+// highlightJS.registerLanguage('axapta', axapta);
+highlightJS.registerLanguage('bash', bash);
+// highlightJS.registerLanguage('basic', basic);
+// highlightJS.registerLanguage('bnf', bnf);
+// highlightJS.registerLanguage('brainfuck', brainfuck);
+highlightJS.registerLanguage('c', c);
+// highlightJS.registerLanguage('cal', cal);
+// highlightJS.registerLanguage('capnproto', capnproto);
+// highlightJS.registerLanguage('ceylon', ceylon);
+// highlightJS.registerLanguage('clean', clean);
+highlightJS.registerLanguage('clojure', clojure);
+// highlightJS.registerLanguage('clojure-repl', clojureRepl);
+// highlightJS.registerLanguage('cmake', cmake);
+// highlightJS.registerLanguage('coffeescript', coffeescript);
+// highlightJS.registerLanguage('coq', coq);
+// highlightJS.registerLanguage('cos', cos);
+// highlightJS.registerLanguage('crmsh', crmsh);
+highlightJS.registerLanguage('crystal', crystal);
+highlightJS.registerLanguage('csharp', csharp);
+highlightJS.registerLanguage('csp', csp);
+highlightJS.registerLanguage('css', css);
+// highlightJS.registerLanguage('d', d);
+highlightJS.registerLanguage('markdown', markdown);
+highlightJS.registerLanguage('dart', dart);
+// highlightJS.registerLanguage('delphi', delphi);
+highlightJS.registerLanguage('diff', diff);
+// highlightJS.registerLanguage('django', django);
+// highlightJS.registerLanguage('dns', dns);
+highlightJS.registerLanguage('dockerfile', dockerfile);
+// highlightJS.registerLanguage('dos', dos);
+// highlightJS.registerLanguage('dsconfig', dsconfig);
+// highlightJS.registerLanguage('dts', dts);
+// highlightJS.registerLanguage('dust', dust);
+// highlightJS.registerLanguage('ebnf', ebnf);
+highlightJS.registerLanguage('elixir', elixir);
+highlightJS.registerLanguage('elm', elm);
+highlightJS.registerLanguage('ruby', ruby);
+// highlightJS.registerLanguage('erb', erb);
+// highlightJS.registerLanguage('erlang-repl', erlangRepl);
+highlightJS.registerLanguage('erlang', erlang);
+// highlightJS.registerLanguage('excel', excel);
+// highlightJS.registerLanguage('fix', fix);
+// highlightJS.registerLanguage('flix', flix);
+// highlightJS.registerLanguage('fortran', fortran);
+highlightJS.registerLanguage('fsharp', fsharp);
+// highlightJS.registerLanguage('gams', gams);
+// highlightJS.registerLanguage('gauss', gauss);
+// highlightJS.registerLanguage('gcode', gcode);
+// highlightJS.registerLanguage('gherkin', gherkin);
+// highlightJS.registerLanguage('glsl', glsl);
+// highlightJS.registerLanguage('gml', gml);
+highlightJS.registerLanguage('go', go);
+// highlightJS.registerLanguage('golo', golo);
+highlightJS.registerLanguage('gradle', gradle);
+highlightJS.registerLanguage('groovy', groovy);
+// highlightJS.registerLanguage('haml', haml);
+highlightJS.registerLanguage('handlebars', handlebars);
+highlightJS.registerLanguage('haskell', haskell);
+// highlightJS.registerLanguage('haxe', haxe);
+// highlightJS.registerLanguage('hsp', hsp);
+// highlightJS.registerLanguage('htmlbars', htmlbars);
+// highlightJS.registerLanguage('http', http);
+// highlightJS.registerLanguage('hy', hy);
+// highlightJS.registerLanguage('inform7', inform7);
+highlightJS.registerLanguage('ini', ini);
+// highlightJS.registerLanguage('irpf90', irpf90);
+// highlightJS.registerLanguage('isbl', isbl);
+highlightJS.registerLanguage('java', java);
+highlightJS.registerLanguage('javascript', javascript);
+// highlightJS.registerLanguage('jboss-cli', jbossCli);
+highlightJS.registerLanguage('json', json);
+// highlightJS.registerLanguage('julia', julia);
+// highlightJS.registerLanguage('julia-repl', juliaRepl);
+highlightJS.registerLanguage('kotlin', kotlin);
+// highlightJS.registerLanguage('lasso', lasso);
+// highlightJS.registerLanguage('latex', latex);
+// highlightJS.registerLanguage('ldif', ldif);
+// highlightJS.registerLanguage('leaf', leaf);
+highlightJS.registerLanguage('less', less);
+highlightJS.registerLanguage('lisp', lisp);
+// highlightJS.registerLanguage('livecodeserver', livecodeserver);
+// highlightJS.registerLanguage('livescript', livescript);
+// highlightJS.registerLanguage('llvm', llvm);
+// highlightJS.registerLanguage('lsl', lsl);
+highlightJS.registerLanguage('lua', lua);
+highlightJS.registerLanguage('makefile', makefile);
+// highlightJS.registerLanguage('mathematica', mathematica);
+// highlightJS.registerLanguage('matlab', matlab);
+// highlightJS.registerLanguage('maxima', maxima);
+// highlightJS.registerLanguage('mel', mel);
+// highlightJS.registerLanguage('mercury', mercury);
+// highlightJS.registerLanguage('mipsasm', mipsasm);
+// highlightJS.registerLanguage('mizar', mizar);
+highlightJS.registerLanguage('perl', perl);
+// highlightJS.registerLanguage('mojolicious', mojolicious);
+// highlightJS.registerLanguage('monkey', monkey);
+// highlightJS.registerLanguage('moonscript', moonscript);
+// highlightJS.registerLanguage('n1ql', n1ql);
+highlightJS.registerLanguage('nginx', nginx);
+// highlightJS.registerLanguage('nim', nim);
+// highlightJS.registerLanguage('nix', nix);
+// highlightJS.registerLanguage('nsis', nsis);
+highlightJS.registerLanguage('objectivec', objectivec);
+// highlightJS.registerLanguage('ocaml', ocaml);
+// highlightJS.registerLanguage('openscad', openscad);
+// highlightJS.registerLanguage('oxygene', oxygene);
+// highlightJS.registerLanguage('parser3', parser3);
+// highlightJS.registerLanguage('pf', pf);
+highlightJS.registerLanguage('pgsql', pgsql);
+highlightJS.registerLanguage('php', php);
+// highlightJS.registerLanguage('php-template', phpTemplate);
+highlightJS.registerLanguage('plaintext', plaintext);
+// highlightJS.registerLanguage('pony', pony);
+highlightJS.registerLanguage('powershell', powershell);
+// highlightJS.registerLanguage('processing', processing);
+// highlightJS.registerLanguage('profile', profile);
+// highlightJS.registerLanguage('prolog', prolog);
+highlightJS.registerLanguage('properties', properties);
+highlightJS.registerLanguage('protobuf', protobuf);
+// highlightJS.registerLanguage('puppet', puppet);
+// highlightJS.registerLanguage('purebasic', purebasic);
+highlightJS.registerLanguage('python', python);
+// highlightJS.registerLanguage('python-repl', pythonRepl);
+// highlightJS.registerLanguage('q', q);
+// highlightJS.registerLanguage('qml', qml);
+// highlightJS.registerLanguage('r', r);
+// highlightJS.registerLanguage('reasonml', reasonml);
+// highlightJS.registerLanguage('rib', rib);
+// highlightJS.registerLanguage('roboconf', roboconf);
+// highlightJS.registerLanguage('routeros', routeros);
+// highlightJS.registerLanguage('rsl', rsl);
+// highlightJS.registerLanguage('ruleslanguage', ruleslanguage);
+highlightJS.registerLanguage('rust', rust);
+// highlightJS.registerLanguage('sas', sas);
+highlightJS.registerLanguage('scala', scala);
+// highlightJS.registerLanguage('scheme', scheme);
+// highlightJS.registerLanguage('scilab', scilab);
+highlightJS.registerLanguage('scss', scss);
+highlightJS.registerLanguage('shell', shell);
+// highlightJS.registerLanguage('smali', smali);
+// highlightJS.registerLanguage('smalltalk', smalltalk);
+// highlightJS.registerLanguage('sml', sml);
+// highlightJS.registerLanguage('sqf', sqf);
+highlightJS.registerLanguage('sql', sql);
+// highlightJS.registerLanguage('stan', stan);
+// highlightJS.registerLanguage('stata', stata);
+// highlightJS.registerLanguage('step21', step21);
+// highlightJS.registerLanguage('stylus', stylus);
+// highlightJS.registerLanguage('subunit', subunit);
+highlightJS.registerLanguage('swift', swift);
+// highlightJS.registerLanguage('taggerscript', taggerscript);
+highlightJS.registerLanguage('yaml', yaml);
+// highlightJS.registerLanguage('tap', tap);
+// highlightJS.registerLanguage('tcl', tcl);
+// highlightJS.registerLanguage('thrift', thrift);
+// highlightJS.registerLanguage('tp', tp);
+// highlightJS.registerLanguage('twig', twig);
+highlightJS.registerLanguage('typescript', typescript);
+// highlightJS.registerLanguage('vala', vala);
+// highlightJS.registerLanguage('vbnet', vbnet);
+// highlightJS.registerLanguage('vbscript', vbscript);
+// highlightJS.registerLanguage('vbscript-html', vbscriptHtml);
+// highlightJS.registerLanguage('verilog', verilog);
+// highlightJS.registerLanguage('vhdl', vhdl);
+// highlightJS.registerLanguage('vim', vim);
+// highlightJS.registerLanguage('x86asm', x86asm);
+// highlightJS.registerLanguage('xl', xl);
+// highlightJS.registerLanguage('xquery', xquery);
+// highlightJS.registerLanguage('zephir', zephir);
+
+export const hljs = highlightJS;

src/utils.js

@@ -1,46 +0,0 @@
-/*
- *
- * Utils (utils.js)
- * Author: rtfpessoa
- *
- */
-
-(function(ctx, undefined) {
-
-  function Utils() {
-  }
-
-  Utils.prototype.escape = function(str) {
-    return str.slice(0)
-      .replace(/&/g, '&')
-      .replace(/</g, '&lt;')
-      .replace(/>/g, '&gt;')
-      .replace(/\t/g, '    ');
-  };
-
-  Utils.prototype.getRandomId = function(prefix) {
-      return prefix + "-" + Math.random().toString(36).slice(-3);
-  };
-
-  Utils.prototype.startsWith = function(str, start) {
-    if (typeof start === 'object') {
-      var result = false;
-      start.forEach(function(s) {
-        if (str.indexOf(s) === 0) {
-          result = true;
-        }
-      });
-
-      return result;
-    }
-
-    return str.indexOf(start) === 0;
-  };
-
-  Utils.prototype.valueOrEmpty = function(value) {
-    return value ? value : '';
-  };
-
-  module.exports['Utils'] = new Utils();
-
-})(this);

src/utils.ts

@@ -0,0 +1,54 @@
+const specials = [
+  // Order matters for these
+  '-',
+  '[',
+  ']',
+  // Order doesn't matter for any of these
+  '/',
+  '{',
+  '}',
+  '(',
+  ')',
+  '*',
+  '+',
+  '?',
+  '.',
+  '\\',
+  '^',
+  '$',
+  '|',
+];
+
+// All characters will be escaped with '\'
+// even though only some strictly require it when inside of []
+const regex = RegExp('[' + specials.join('\\') + ']', 'g');
+
+/**
+ * Escapes all required characters for safe usage inside a RegExp
+ */
+export function escapeForRegExp(str: string): string {
+  return str.replace(regex, '\\$&');
+}
+
+/**
+ * Converts all '\' in @path to unix style '/'
+ */
+export function unifyPath(path: string): string {
+  return path ? path.replace(/\\/g, '/') : path;
+}
+
+/**
+ * Create unique number identifier for @text
+ */
+export function hashCode(text: string): number {
+  let i, chr, len;
+  let hash = 0;
+
+  for (i = 0, len = text.length; i < len; i++) {
+    chr = text.charCodeAt(i);
+    hash = (hash << 5) - hash + chr;
+    hash |= 0; // Convert to 32bit integer
+  }
+
+  return hash;
+}

terraform/main.tf

@@ -0,0 +1,217 @@
+# Inspired by https://gist.github.com/danihodovic/a51eb0d9d4b29649c2d094f4251827dd
+
+provider "aws" {
+  profile = "${var.aws_profile}"
+  region  = "${var.aws_region}"
+}
+
+provider "aws" {
+  alias   = "nvirginia"
+  profile = "${var.aws_profile}"
+  region  = "us-east-1"
+}
+
+terraform {
+  backend "s3" {
+    region         = "us-east-1"
+    encrypt        = true
+    bucket         = "terraform-state-bucket.rtfpessoa.xyz"
+    dynamodb_table = "terraform-state-table"
+    key            = "diff2html.xyz"
+  }
+}
+
+resource "aws_acm_certificate" "cert" {
+  provider                  = "aws.nvirginia"
+  domain_name               = "${var.domain}"
+  subject_alternative_names = ["*.${var.domain}"]
+  validation_method         = "DNS"
+
+  lifecycle {
+    create_before_destroy = true
+  }
+}
+
+resource "aws_route53_record" "root_domain" {
+  zone_id = "${var.hosted_zone_id}"
+  name    = "${var.domain}"
+  type    = "A"
+
+  alias {
+    name                   = "${aws_cloudfront_distribution.cdn.domain_name}"
+    zone_id                = "${aws_cloudfront_distribution.cdn.hosted_zone_id}"
+    evaluate_target_health = false
+  }
+}
+
+resource "aws_route53_record" "www_domain" {
+  zone_id = "${var.hosted_zone_id}"
+  name    = "${local.www_domain}"
+  type    = "A"
+
+  alias {
+    name                   = "${aws_cloudfront_distribution.www_cdn.domain_name}"
+    zone_id                = "${aws_cloudfront_distribution.www_cdn.hosted_zone_id}"
+    evaluate_target_health = false
+  }
+}
+
+resource "aws_route53_record" "cert_validation" {
+  zone_id = "${var.hosted_zone_id}"
+  name    = "${aws_acm_certificate.cert.domain_validation_options.0.resource_record_name}"
+  type    = "${aws_acm_certificate.cert.domain_validation_options.0.resource_record_type}"
+
+  records = ["${aws_acm_certificate.cert.domain_validation_options.0.resource_record_value}"]
+  ttl     = 60
+}
+
+resource "aws_acm_certificate_validation" "cert" {
+  provider                = "aws.nvirginia"
+  certificate_arn         = "${aws_acm_certificate.cert.arn}"
+  validation_record_fqdns = ["${aws_route53_record.cert_validation.fqdn}"]
+}
+
+resource "aws_cloudfront_origin_access_identity" "origin_access_identity" {
+  comment = "${var.domain} origin access identity"
+}
+
+locals {
+  s3_origin_id     = "S3-${var.domain}"
+  s3_www_origin_id = "S3-www-${var.domain}"
+  www_domain       = "www.${var.domain}"
+}
+
+resource "aws_s3_bucket" "site" {
+  bucket = "${var.domain}"
+  acl    = "private"
+
+  policy = <<EOF
+{
+    "Version": "2008-10-17",
+    "Statement": [{
+      "Sid": "AllowCloudFrontRead",
+      "Effect": "Allow",
+      "Principal": { "AWS": "${aws_cloudfront_origin_access_identity.origin_access_identity.iam_arn}" },
+      "Action": "s3:GetObject",
+      "Resource": "arn:aws:s3:::${var.domain}/*"
+    }]
+}
+EOF
+}
+
+resource "aws_cloudfront_distribution" "cdn" {
+  origin {
+    domain_name = "${aws_s3_bucket.site.bucket_regional_domain_name}"
+    origin_id   = "${local.s3_origin_id}"
+
+    s3_origin_config {
+      origin_access_identity = "${aws_cloudfront_origin_access_identity.origin_access_identity.cloudfront_access_identity_path}"
+    }
+  }
+
+  # If using route53 aliases for DNS we need to declare it here too, otherwise we'll get 403s.
+  aliases = ["${var.domain}"]
+
+  enabled             = true
+  is_ipv6_enabled     = true
+  default_root_object = "index.html"
+
+  default_cache_behavior {
+    allowed_methods  = ["GET", "HEAD", "OPTIONS"]
+    cached_methods   = ["GET", "HEAD"]
+    target_origin_id = "${local.s3_origin_id}"
+
+    forwarded_values {
+      query_string = true
+
+      cookies {
+        forward = "none"
+      }
+    }
+
+    min_ttl                = 0
+    default_ttl            = 86400
+    max_ttl                = 31536000
+    compress               = true
+    viewer_protocol_policy = "redirect-to-https"
+  }
+
+  price_class = "PriceClass_All"
+
+  restrictions {
+    geo_restriction {
+      restriction_type = "none"
+      locations        = []
+    }
+  }
+
+  viewer_certificate {
+    acm_certificate_arn      = "${aws_acm_certificate_validation.cert.certificate_arn}"
+    minimum_protocol_version = "TLSv1.1_2016"
+    ssl_support_method       = "sni-only"
+  }
+}
+
+resource "aws_s3_bucket" "www_site" {
+  bucket = "${local.www_domain}"
+  acl    = "public-read"
+
+  website {
+    redirect_all_requests_to = "https://${var.domain}"
+  }
+}
+
+resource "aws_cloudfront_distribution" "www_cdn" {
+  origin {
+    origin_id   = "${local.s3_www_origin_id}"
+    domain_name = "${aws_s3_bucket.www_site.website_endpoint}"
+
+    custom_origin_config {
+      http_port              = 80
+      https_port             = 443
+      origin_protocol_policy = "http-only"
+      origin_ssl_protocols   = ["TLSv1.1", "TLSv1.2"]
+    }
+  }
+
+  # If using route53 aliases for DNS we need to declare it here too, otherwise we'll get 403s.
+  aliases = ["${local.www_domain}"]
+
+  enabled         = true
+  is_ipv6_enabled = true
+
+  default_cache_behavior {
+    allowed_methods  = ["GET", "HEAD", "OPTIONS"]
+    cached_methods   = ["GET", "HEAD"]
+    target_origin_id = "${local.s3_www_origin_id}"
+
+    forwarded_values {
+      query_string = true
+
+      cookies {
+        forward = "none"
+      }
+    }
+
+    min_ttl                = 0
+    default_ttl            = 86400
+    max_ttl                = 31536000
+    compress               = true
+    viewer_protocol_policy = "redirect-to-https"
+  }
+
+  price_class = "PriceClass_All"
+
+  restrictions {
+    geo_restriction {
+      restriction_type = "none"
+      locations        = []
+    }
+  }
+
+  viewer_certificate {
+    acm_certificate_arn      = "${aws_acm_certificate_validation.cert.certificate_arn}"
+    minimum_protocol_version = "TLSv1.1_2016"
+    ssl_support_method       = "sni-only"
+  }
+}

terraform/outputs.tf

@@ -0,0 +1,7 @@
+output "route53_domain" {
+  value = "${aws_route53_record.root_domain.fqdn}"
+}
+
+output "cdn_domain" {
+  value = "${aws_cloudfront_distribution.cdn.domain_name}"
+}

terraform/variables.tf

@@ -0,0 +1,19 @@
+variable "aws_region" {
+  description = "The aws region to deploy"
+  default = "eu-west-1"
+}
+
+variable "aws_profile" {
+  description = "The aws profile to use"
+  default = "personal"
+}
+
+variable "domain" {
+  description = "The domain to deploy this page"
+  default = "diff2html.xyz"
+}
+
+variable "hosted_zone_id" {
+  description = "The hosted zone id where the domain will be created"
+  default = "Z2T76N7UKY0XQI"
+}

tsconfig.eslint.json

@@ -0,0 +1,5 @@
+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules"],
+  "include": ["./**/*"]
+}

tsconfig.json

@@ -0,0 +1,37 @@
+{
+  "include": ["src/**/*", "typings/**/*"],
+  "exclude": ["node_modules", "src/__tests__/**"],
+  "compilerOptions": {
+    "outDir": "bundles-out",
+    "module": "CommonJS",
+    "moduleResolution": "Node",
+    "target": "ES6",
+    "lib": ["ES6", "DOM"],
+    "jsx": "preserve",
+    "allowJs": false,
+    "checkJs": false,
+    "importHelpers": false,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+    "noEmit": false,
+    "forceConsistentCasingInFileNames": true,
+    "isolatedModules": true,
+    "incremental": false,
+    "strictNullChecks": true,
+    "removeComments": true,
+    "preserveConstEnums": true,
+    "alwaysStrict": true,
+    "noImplicitAny": true,
+    "noImplicitThis": true
+  }
+}

typings/merge.d.ts

@@ -0,0 +1,3 @@
+declare module 'merge' {
+  export function recursive(clone: boolean, ...items: object[]): object;
+}

webpack.bundles.ts

@@ -0,0 +1,61 @@
+import path from 'path';
+
+import webpack from 'webpack';
+
+const diff2htmlBrowserConfig: webpack.Configuration = {
+  module: {
+    rules: [
+      {
+        test: /\.tsx?$/,
+        use: 'ts-loader',
+        exclude: /node_modules/,
+      },
+    ],
+  },
+  resolve: {
+    extensions: ['.tsx', '.ts', '.jsx', '.js'],
+  },
+  entry: './src/diff2html.ts',
+  output: {
+    path: path.resolve(__dirname, 'bundles/js'),
+    libraryTarget: 'umd',
+    globalObject: 'this',
+    library: 'Diff2Html',
+    filename: 'diff2html.min.js',
+    umdNamedDefine: true,
+  },
+};
+
+function diff2htmlUIBrowserConfig(entrypointName: string): webpack.Configuration {
+  return {
+    module: {
+      rules: [
+        {
+          test: /\.tsx?$/,
+          use: 'ts-loader',
+          exclude: /node_modules/,
+        },
+      ],
+    },
+    resolve: {
+      extensions: ['.tsx', '.ts', '.jsx', '.js'],
+    },
+    entry: `./src/ui/js/${entrypointName}.ts`,
+    output: {
+      path: path.resolve(__dirname, 'bundles/js'),
+      libraryTarget: 'umd',
+      globalObject: 'this',
+      filename: `${entrypointName}.min.js`,
+      umdNamedDefine: true,
+    },
+  };
+}
+
+const config: webpack.Configuration[] = [
+  diff2htmlBrowserConfig,
+  diff2htmlUIBrowserConfig('diff2html-ui'),
+  diff2htmlUIBrowserConfig('diff2html-ui-slim'),
+  diff2htmlUIBrowserConfig('diff2html-ui-base'),
+];
+
+export default config;

webpack.website.ts

@@ -0,0 +1,150 @@
+import path from 'path';
+
+import webpack from 'webpack';
+import HtmlWebpackPlugin from 'html-webpack-plugin';
+import MiniCssExtractPlugin from 'mini-css-extract-plugin';
+import CopyPlugin from 'copy-webpack-plugin';
+
+const pages = ['index', 'demo'];
+
+type Plugin = ((this: webpack.Compiler, compiler: webpack.Compiler) => void) | webpack.WebpackPluginInstance;
+
+function plugins(page: string): Plugin[] {
+  return [
+    new MiniCssExtractPlugin({
+      filename: '[name].css',
+      chunkFilename: '[id].css',
+    }),
+    new HtmlWebpackPlugin({
+      hash: true,
+      inject: true,
+      title: `${page} page`,
+      filename: `${page}.html`,
+      template: `./website/templates/pages/${page}/${page}.handlebars`,
+      minify: {
+        html5: true,
+        collapseWhitespace: true,
+        caseSensitive: true,
+        removeEmptyElements: false,
+        removeComments: true,
+        removeRedundantAttributes: true,
+        useShortDoctype: true,
+        removeEmptyAttributes: true,
+        removeStyleLinkTypeAttributes: true,
+        keepClosingSlash: true,
+        minifyJS: true,
+        minifyCSS: true,
+        minifyURLs: true,
+      },
+    }),
+    new CopyPlugin({
+      patterns: [
+        { from: 'website/favicon.ico', to: 'favicon.ico' },
+        { from: 'website/robots.txt', to: 'robots.txt' },
+        { from: 'website/sitemap.xml', to: 'sitemap.xml' },
+      ],
+    }),
+  ];
+}
+
+const config: webpack.Configuration[] = pages.map(page => {
+  return {
+    entry: {
+      [page]: `./website/templates/pages/${page}/${page}.ts`,
+    },
+    output: {
+      path: path.resolve(__dirname, './docs'),
+    },
+    resolve: {
+      extensions: ['.tsx', '.ts', '.jsx', '.js'],
+    },
+    module: {
+      rules: [
+        {
+          test: /\.tsx?$/,
+          use: 'ts-loader',
+          exclude: /node_modules/,
+        },
+        {
+          test: /\.(html)$/,
+          use: {
+            loader: 'html-loader',
+            options: {
+              attrs: ['img:src'],
+            },
+          },
+        },
+        {
+          test: /\.handlebars$/,
+          loader: 'handlebars-loader',
+          options: {
+            inlineRequires: '/images/',
+            precompileOptions: {
+              knownHelpersOnly: false,
+            },
+            helperDirs: [path.join(__dirname, 'website/templates/helpers')],
+            partialDirs: [path.join(__dirname, 'website/templates')],
+          },
+        },
+        {
+          test: /\.(gif|png|jpe?g|webp)$/i,
+          use: [
+            {
+              loader: 'file-loader',
+              options: {
+                name: '[name].[ext]?[hash]',
+                outputPath: 'images',
+                esModule: false,
+              },
+            },
+            {
+              loader: 'image-webpack-loader',
+              options: {
+                mozjpeg: {
+                  progressive: true,
+                  quality: 65,
+                },
+                optipng: {
+                  enabled: true,
+                },
+                pngquant: {
+                  quality: [0.65, 0.9],
+                  speed: 4,
+                },
+                gifsicle: {
+                  interlaced: false,
+                },
+                webp: {
+                  quality: 75,
+                },
+              },
+            },
+          ],
+        },
+        {
+          test: /\.(css)$/,
+          use: [MiniCssExtractPlugin.loader, { loader: 'css-loader', options: { importLoaders: 1 } }, 'postcss-loader'],
+        },
+        {
+          test: /\.woff(2)?(\?v=\d\.\d\.\d)?$/,
+          use: [
+            {
+              loader: 'url-loader',
+              options: {
+                limit: 1000,
+                mimetype: 'application/font-woff',
+              },
+            },
+          ],
+        },
+        {
+          test: /\.(ttf|eot|svg)(\?v=\d\.\d\.\d)?$/,
+          loader: 'file-loader',
+        },
+      ],
+    },
+    plugins: plugins(page),
+  };
+});
+
+export default config;

website/main.css

@@ -0,0 +1,22 @@
+.hero-green {
+  color: #26a65b;
+}
+
+.hero-black {
+  color: #353535;
+}
+
+.hero-red {
+  color: #cb2c37;
+}
+
+.button.is-green {
+  color: #fff;
+  background: #26a65b;
+  font-weight: 400;
+}
+
+.button.is-green:hover {
+  color: #fff;
+  background: #5dbe5d;
+}

website/main.ts

@@ -0,0 +1,13 @@
+import 'bulma/css/bulma.css';
+
+document.addEventListener('DOMContentLoaded', () => {
+  const $navbarBurgers = Array.prototype.slice.call(document.querySelectorAll('.navbar-burger'), 0);
+  $navbarBurgers.forEach((el: HTMLElement) => {
+    el.addEventListener('click', () => {
+      el.classList.toggle('is-active');
+      if (el.dataset.target !== undefined) {
+        document.getElementById(el.dataset.target)?.classList.toggle('is-active');
+      }
+    });
+  });
+});

website/robots.txt

@@ -0,0 +1 @@
+User-agent: *