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