chore: Add eslint rule to prevent app imports in shared (see: bf130f9915)

shared/.eslintrc

@@ -8,11 +8,16 @@
     "eslint-plugin-react-hooks"
   ],
   "rules": {
-    "no-restricted-imports": ["error", {
+    "@typescript-eslint/no-restricted-imports": ["error", {
       "patterns": [{
         "group": ["@shared/*"],
         "message": "Use relative imports."
       }, {
+        "allowTypeImports": true,
+        "group": ["~/*"],
+        "message": "Do not reference app code from shared code."
+      }, {
+        "allowTypeImports": true,
         "group": ["@server/*"],
         "message": "Do not reference server code from shared code."
       }]
@@ -22,4 +27,4 @@
     "jest": true,
     "browser": true
   }
-}
+}

shared/editor/lib/ExtensionManager.ts

@@ -5,7 +5,7 @@ import { MarkdownParser } from "prosemirror-markdown";
 import { Schema } from "prosemirror-model";
 import { EditorView } from "prosemirror-view";
 import { Primitive } from "utility-types";
-import { Editor } from "~/editor";
+import type { Editor } from "~/editor";
 import Mark from "../marks/Mark";
 import Node from "../nodes/Node";
 import Extension, { CommandFactory } from "./Extension";