diff --git a/docs/implementation/README.md b/docs/implementation/README.md
index 1b1c0ecc..5e34a6ca 100644
--- a/docs/implementation/README.md
+++ b/docs/implementation/README.md
@@ -280,7 +280,7 @@ When a full page/template rebuild or targeted generated-pages rebuild no longer
 
 ### Dependency tracking
 
-DOMStack uses [`@11ty/dependency-tree-typescript`](https://github.com/11ty/dependency-tree-typescript) to statically analyze ESM imports.
+DOMStack uses [`@11ty/dependency-tree`](https://github.com/11ty/eleventy-utils/tree/main/parse-deps) to statically analyze JavaScript and TypeScript imports and re-exports.
 The page watcher observes tracked imports within the source tree, including JSON files.
 DOMStack maintains dependency maps for:
 
diff --git a/lib/watch/dependency-analysis-watch.test.js b/lib/watch/dependency-analysis-watch.test.js
index 7ee43bd2..7ea2067d 100644
--- a/lib/watch/dependency-analysis-watch.test.js
+++ b/lib/watch/dependency-analysis-watch.test.js
@@ -188,14 +188,14 @@ function pauseObservation (t, filepath) {
 
 describe('watch coordinator dependency analysis', { concurrency: false, timeout: 60_000 }, () => {
   before(async () => {
-    // The installed CJS analyzer destructures readFileSync at module load. Install
-    // before importing DomStack, and count only its actual reads, not worker I/O,
+    // Install before importing DomStack, and count only the analyzer's actual
+    // reads, not worker I/O,
     // module loading, fixture assertions, or supplied rebuild options.
     const readFileSync = fs.readFileSync
     /** @param {Parameters<typeof readFileSync>} args */
     const probe = (...args) => {
       if (typeof args[0] === 'string' && args[0].includes('.tmp-dependency-') &&
-        new Error().stack?.includes('@11ty/dependency-tree-esm/main.js')) {
+        new Error().stack?.includes('@11ty/dependency-tree/main.js')) {
         analyzerReads.push(resolve(args[0]))
       }
       return readFileSync(...args)
@@ -490,7 +490,8 @@ describe('watch coordinator dependency analysis', { concurrency: false, timeout:
     for (const kind of ['ignored', 'external', 'symlink']) {
       await t.test(kind, async t => {
         const helper = kind === 'external' ? '../outside.js' : kind === 'ignored' ? './ignored.js' : './alias.js'
-        const target = kind === 'external' ? '../outside.js' : kind === 'ignored' ? 'ignored.js' : 'target.js'
+        // The analyzer resolves symlinks; keep the target outside source observation.
+        const target = kind === 'external' ? '../outside.js' : kind === 'ignored' ? 'ignored.js' : '../target.js'
         const site = await fixture(t, {
           'root.layout.js': layout('root', helper),
           [target]: "export const label = 'unobserved-initial'",
@@ -505,7 +506,7 @@ describe('watch coordinator dependency analysis', { concurrency: false, timeout:
           await site.write('a/page.md', markdown('Markup ' + version))
           await site.deliver('a/page.md')
           assert.ok(site.reads().includes('root.layout.js'), kind + ' closure is analyzed on every successful pass')
-          assert.ok(site.reads().includes(helper.replace(/^\.\//, '')))
+          assert.ok(site.reads().includes(target.replace(/^\.\//, '')))
           assert.ok(!site.reads().includes('other.layout.js'), 'fully observed unrelated closure still reuses analysis')
           assert.match(await site.output(), new RegExp('unobserved-' + version + '.*Markup ' + version, 's'))
         }
diff --git a/lib/watch/dependency-index.js b/lib/watch/dependency-index.js
index 563c30ce..ec3b4cb1 100644
--- a/lib/watch/dependency-index.js
+++ b/lib/watch/dependency-index.js
@@ -7,7 +7,7 @@
  * @typedef {(filepath: string) => boolean | Promise<boolean>} DependencyObservation
  */
 import { resolve } from 'node:path'
-import { find } from '@11ty/dependency-tree-typescript'
+import { clearCache, find } from '@11ty/dependency-tree'
 import { isProcessedFile, globalBundleAssets, pageBundleAssets, layoutBundleAssets } from '../file-conventions.js'
 
 /** @type {DependencyObservation} */
@@ -158,6 +158,8 @@ export class WatchDependencyIndex {
    * @param {{ reuseAnalysis?: boolean, isObserved?: DependencyObservation }} [options]
    */
   async rebuild (siteData, { reuseAnalysis = false, isObserved = unobserved } = {}) {
+    // DOMStack's observation-aware cache owns reuse across rebuilds, not file stats.
+    clearCache()
     const generation = ++this.#rebuildGeneration
     const cwd = process.cwd()
     if (!reuseAnalysis || this.#dependencyAnalysisFailed || cwd !== this.#analysisCwd || isObserved !== this.#observation) this.clearAnalysis()
diff --git a/lib/watch/incremental-global-data-tests/index.test.js b/lib/watch/incremental-global-data-tests/index.test.js
index 4c0cc4b8..ebdeb4a7 100644
--- a/lib/watch/incremental-global-data-tests/index.test.js
+++ b/lib/watch/incremental-global-data-tests/index.test.js
@@ -43,8 +43,69 @@ test('cached index adds, updates and removes distinct source IDs without rerende
   await assert.rejects(stat(join(site.dest, 'a/index.html')), { code: 'ENOENT' })
 })
 
-test.todo('re-exported page helpers shared with templates upsert affected source pages (https://github.com/bcomnes/domstack/issues/328)')
-test.todo('named, star, and namespace re-exports of global-data helpers trigger an index reset (https://github.com/bcomnes/domstack/issues/328)')
+for (const extension of ['js', 'ts']) {
+  for (const kind of ['named', 'star', 'namespace']) {
+    /** @param {string} name @param {string} leaf */
+    const reexport = (name, leaf) => kind === 'namespace'
+      ? `export * as helpers from './${leaf}.${extension}';`
+      : kind === 'star'
+        ? `export * from './${leaf}.${extension}';`
+        : `export { ${name} } from './${leaf}.${extension}';`
+    /** @param {string} name @param {string} barrel */
+    const importValue = (name, barrel) => kind === 'namespace'
+      ? `import { helpers } from '${barrel}.${extension}'; const { ${name} } = helpers;`
+      : `import { ${name} } from '${barrel}.${extension}';`
+
+    test(`re-exported page helpers shared with templates upsert affected source pages (${extension}, ${kind})`, options, async t => {
+      const site = await fixture(t, {
+        files: {
+          'root.layout.js': 'export default ({ children }) => children\n',
+          'code/page.js': `${importValue('content', '../page-middle')} export const vars = { article: true, title: 'Code' }; export default () => content\n`,
+          [`page-middle.${extension}`]: reexport('content', 'page-leaf'),
+          [`page-leaf.${extension}`]: "export const content = 'Code one'\n",
+          'shared.txt.template.js': `import { content } from './page-leaf.${extension}'; export default () => content\n`,
+        },
+      })
+      await site.start()
+      await site.write(`page-leaf.${extension}`, "export const content = 'Code two'\n")
+      const call = await site.rebuild([site.event(`page-leaf.${extension}`)])
+      assertDelta(call, ['code/page.js'])
+      assert.deepEqual(call.rendered, ['code/page.js'])
+      assert.equal(await readFile(join(site.dest, 'shared.txt'), 'utf8'), 'Code two')
+      assert.match(await readFile(join(site.dest, 'code/index.html'), 'utf8'), /Code two/)
+      const watched = await site.data()
+      assert.ok(watched.some(row => row.html.includes('Code two')))
+      await site.dom.stopWatching()
+      await site.dom.build()
+      assert.deepEqual(await site.data(), watched, 'watch output matches a fresh build')
+    })
+
+    test(`re-exported global-data helpers shared with templates reset the index (${extension}, ${kind})`, options, async t => {
+      const site = await fixture(t, {
+        files: {
+          'root.layout.js': 'export default ({ children }) => children\n',
+          'producer-middle.js': `${importValue('prefix', './producer-barrel')} export { prefix };\n`,
+          [`producer-barrel.${extension}`]: reexport('prefix', 'shared-producer-leaf'),
+          [`shared-producer-leaf.${extension}`]: "export const prefix = 'Original prefix: '\n",
+          'shared.txt.template.js': `import { prefix } from './shared-producer-leaf.${extension}'; export default () => prefix\n`,
+        },
+      })
+      await site.start()
+      assert.ok((await site.data()).every(row => row.html.startsWith('Original prefix: ')))
+      await site.write(`shared-producer-leaf.${extension}`, "export const prefix = 'Updated prefix: '\n")
+      const call = await site.rebuild([site.event(`shared-producer-leaf.${extension}`)])
+      assertReset(call)
+      assert.equal(call.reason, 'global-data-changed')
+      assert.deepEqual(call.rendered, ['a/page.md', 'b/page.md'])
+      assert.equal(await readFile(join(site.dest, 'shared.txt'), 'utf8'), 'Updated prefix: ')
+      const watched = await site.data()
+      assert.ok(watched.every(row => row.html.startsWith('Updated prefix: ')))
+      await site.dom.stopWatching()
+      await site.dom.build()
+      assert.deepEqual(await site.data(), watched, 'watch output matches a fresh build')
+    })
+  }
+}
 
 test('a shared dependency upserts a transitive source page even when a template imports it directly', options, async t => {
   const site = await fixture(t, {
diff --git a/package.json b/package.json
index 4c3f8ca8..be649649 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "node": "^22.18.0 || >=24.0.0"
   },
   "dependencies": {
-    "@11ty/dependency-tree-typescript": "^1.0.0",
+    "@11ty/dependency-tree": "5.0.0-alpha.3",
     "@domstack/sync": "^0.0.8",
     "argsclopts": "^1.0.4",
     "async-folder-walker": "^3.0.5",
diff --git a/types/@11ty__dependency-tree-typescript.d.ts b/types/@11ty__dependency-tree.d.ts
similarity index 66%
rename from types/@11ty__dependency-tree-typescript.d.ts
rename to types/@11ty__dependency-tree.d.ts
index 575fc73d..941fd624 100644
--- a/types/@11ty__dependency-tree-typescript.d.ts
+++ b/types/@11ty__dependency-tree.d.ts
@@ -1,4 +1,5 @@
-declare module '@11ty/dependency-tree-typescript' {
+declare module '@11ty/dependency-tree' {
+  export function clearCache (filePath?: string): void
   export function find (filePath: string): Promise<string[]>
   export function findGraph (filePath: string): Promise<object>
   export function mergeGraphs (...graphs: object[]): object