From ad2e3af9007d09726d5ec95dc8c88e44f88b7703 Mon Sep 17 00:00:00 2001
From: Gavin Nishizawa <gavin@terrastruct.com>
Date: Tue, 28 Mar 2023 11:37:40 -0700
Subject: [PATCH 1/2] add compiler error for neara set to title with constant
 near

---
 d2compiler/compile.go                               |  7 +++++++
 d2compiler/compile_test.go                          | 13 +++++++++++++
 .../d2compiler/TestCompile/near_near_const.exp.json | 12 ++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 testdata/d2compiler/TestCompile/near_near_const.exp.json

diff --git a/d2compiler/compile.go b/d2compiler/compile.go
index 06dc6578f..28288795d 100644
--- a/d2compiler/compile.go
+++ b/d2compiler/compile.go
@@ -726,6 +726,13 @@ func (c *compiler) validateNear(g *d2graph.Graph) {
 					c.errorf(obj.Attributes.NearKey, "near keys cannot be set to an object within sequence diagrams")
 					continue
 				}
+				if nearObj.Attributes.NearKey != nil {
+					_, nearObjNearIsConst := d2graph.NearConstants[d2graph.Key(nearObj.Attributes.NearKey)[0]]
+					if nearObjNearIsConst {
+						c.errorf(obj.Attributes.NearKey, "near keys cannot be set to an object with a constant near key")
+						continue
+					}
+				}
 			} else if isConst {
 				is := false
 				for _, e := range g.Edges {
diff --git a/d2compiler/compile_test.go b/d2compiler/compile_test.go
index 845e0c41a..53e33e22f 100644
--- a/d2compiler/compile_test.go
+++ b/d2compiler/compile_test.go
@@ -2255,6 +2255,19 @@ layers: {
 }`,
 			expErr: `d2/testdata/d2compiler/TestCompile/link-board-underscore-not-found.d2:7:9: invalid underscore usage`,
 		},
+		{
+			name: "near_near_const",
+			text: `
+title: Title {
+	near: top-center
+}
+
+obj {
+	near: title
+}
+`,
+			expErr: `d2/testdata/d2compiler/TestCompile/near_near_const.d2:7:8: near keys cannot be set to an object with a constant near key`,
+		},
 	}
 
 	for _, tc := range testCases {
diff --git a/testdata/d2compiler/TestCompile/near_near_const.exp.json b/testdata/d2compiler/TestCompile/near_near_const.exp.json
new file mode 100644
index 000000000..7b5fe99af
--- /dev/null
+++ b/testdata/d2compiler/TestCompile/near_near_const.exp.json
@@ -0,0 +1,12 @@
+{
+  "graph": null,
+  "err": {
+    "ioerr": null,
+    "errs": [
+      {
+        "range": "d2/testdata/d2compiler/TestCompile/near_near_const.d2,6:7:50-6:12:55",
+        "errmsg": "d2/testdata/d2compiler/TestCompile/near_near_const.d2:7:8: near keys cannot be set to an object with a constant near key"
+      }
+    ]
+  }
+}

From 75536ebf8c74ceebe509f5fdd9aaea05962a8d6a Mon Sep 17 00:00:00 2001
From: Gavin Nishizawa <gavin@terrastruct.com>
Date: Tue, 28 Mar 2023 11:41:59 -0700
Subject: [PATCH 2/2] changelog

---
 ci/release/changelogs/next.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ci/release/changelogs/next.md b/ci/release/changelogs/next.md
index 71960dc02..5a1d75909 100644
--- a/ci/release/changelogs/next.md
+++ b/ci/release/changelogs/next.md
@@ -8,3 +8,5 @@
 - prevent `tooltip` to be an URL when `link` is already set. [#1091](https://github.com/terrastruct/d2/pull/1091)
 
 #### Bugfixes ⛑️
+
+- prevent an object's `near` from targeting a text near a constant. [#1100](https://github.com/terrastruct/d2/pull/1100)