keep glimmer packages in "exposedDependencies" and not also "packages"

Author: ef4

package.json

@@ -61,7 +61,6 @@
     "type-check:internals": "tsc --noEmit",
     "type-check:types": "tsc --noEmit --project type-tests",
     "type-check": "npm-run-all type-check:*"
-
   },
   "dependencies": {
     "@babel/core": "^7.24.4",
@@ -322,7 +321,6 @@
       "@ember/version/index.js": "ember-source/@ember/version/index.js",
       "@glimmer/destroyable/index.js": "ember-source/@glimmer/destroyable/index.js",
       "@glimmer/encoder/index.js": "ember-source/@glimmer/encoder/index.js",
-      "@glimmer/env/index.js": "ember-source/@glimmer/env/index.js",
       "@glimmer/global-context/index.js": "ember-source/@glimmer/global-context/index.js",
       "@glimmer/manager/index.js": "ember-source/@glimmer/manager/index.js",
       "@glimmer/node/index.js": "ember-source/@glimmer/node/index.js",
@@ -332,15 +330,14 @@
       "@glimmer/reference/index.js": "ember-source/@glimmer/reference/index.js",
       "@glimmer/runtime/index.js": "ember-source/@glimmer/runtime/index.js",
       "@glimmer/tracking/index.js": "ember-source/@glimmer/tracking/index.js",
-      "@glimmer/tracking/primitives/cache.js": "ember-source/@glimmer/tracking/primitives/cache.js",
+      "@glimmer/tracking/primitives/cache/index.js": "ember-source/@glimmer/tracking/primitives/cache/index.js",
       "@glimmer/util/index.js": "ember-source/@glimmer/util/index.js",
       "@glimmer/validator/index.js": "ember-source/@glimmer/validator/index.js",
       "@glimmer/vm/index.js": "ember-source/@glimmer/vm/index.js",
       "@glimmer/wire-format/index.js": "ember-source/@glimmer/wire-format/index.js",
       "@simple-dom/document/index.js": "ember-source/@simple-dom/document/index.js",
       "backburner.js/index.js": "ember-source/backburner.js/index.js",
       "dag-map/index.js": "ember-source/dag-map/index.js",
-      "ember-template-compiler/index.js": "ember-source/ember-template-compiler/index.js",
       "ember-testing/index.js": "ember-source/ember-testing/index.js",
       "ember-testing/lib/adapters/adapter.js": "ember-source/ember-testing/lib/adapters/adapter.js",
       "ember-testing/lib/adapters/qunit.js": "ember-source/ember-testing/lib/adapters/qunit.js",
@@ -384,4 +381,4 @@
     }
   },
   "packageManager": "pnpm@10.5.0"
-}
+}

rollup.config.mjs

@@ -218,6 +218,11 @@ function packages() {
       '@ember/-internals/*/type-tests/**' /* internal packages */,
       '*/*/type-tests/**' /* scoped packages */,
       '*/type-tests/**' /* packages */,
+
+      // all the glimmer-vm packages are handled instead as
+      // "exposedDependencies" since they used to actually be dependencies.
+      '@glimmer-workspace/**',
+      '@glimmer/**',
     ],
     cwd: 'packages',
   });
@@ -264,6 +269,11 @@ export function exposedDependencies() {
       '@glimmer/runtime',
       '@glimmer/validator',
     ]),
+    '@glimmer/tracking': resolve(packageCache.appRoot, 'packages/@glimmer/tracking/index.ts'),
+    '@glimmer/tracking/primitives/cache': resolve(
+      packageCache.appRoot,
+      'packages/@glimmer/tracking/primitives/cache.ts'
+    ),
   };
 }
 
@@ -363,7 +373,7 @@ function resolveTS() {
     name: 'resolve-ts',
     async resolveId(source, importer) {
       let result = await this.resolve(source, importer);
-      if (result === null) {
+      if (result === null && importer) {
         // the rest of rollup couldn't find it
         let stem = resolve(dirname(importer), source);
         for (let candidate of ['.ts', '/index.ts']) {