fix(dts-plugin): infer root dir from tsconfig references to fix Vite 8 new template dev server failure by eezhal92 · Pull Request #4543 · module-federation/core

eezhal92 · 2026-03-14T03:17:27Z

Description

When using the new Vite-react template (Vite v8 + Rolldown) with module-federation/vite plugin, the dev server stopped and throws this error: Error: Can not get effective rootDir, please set compilerOptions.rootDir ! see #4542

  VITE v8.0.0  ready in 397 ms

  ➜  Local:   http://localhost:4000/
  ➜  Network: use --host to expose
  ➜  press h + enter to show help
node:internal/process/promises:394
    triggerUncaughtException(err, true /* fromPromise */);
    ^

Error: Can not get effective rootDir, please set compilerOptions.rootDir !
    at getEffectiveRootDir (/Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:2462:9)
    at readTsConfig (/Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:2481:19)
    at retrieveRemoteConfig (/Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:2560:20)
    at /Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:2896:45
    at Generator.next (<anonymous>)
    at /Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:79:61
    at new Promise (<anonymous>)
    at __async (/Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:63:10)
    at forkDevWorker (/Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:2886:10)
    at Object.<anonymous> (/Users/ijal/dev/ags/vite-mfe/mfe-app1/node_modules/@module-federation/vite/node_modules/@module-federation/dts-plugin/dist/fork-dev-worker.js:2618:23)

The new template is using composite tsconfig like so:

{
  "files": [],
  "references": [
    { "path": "./tsconfig.app.json" },
    { "path": "./tsconfig.node.json" }
  ]
}

Root cause

This happens because the remotePlugin module cannot retrieve the tsconfig root directory when using config like above. Currently the logic only works for single (non-composite) tsconfig. It infers the root directory from fileNames path of the parsed config.

Fix

Add new logic to determine the root dir from the "references" field, by checking the tsconfig in the same directory with the entry tsconfig.json.

Related Issue

This PR closes #4542

Types of changes

Docs change / refactoring / dependency upgrade
Bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds functionality)

Checklist

I have added tests to cover my changes.
All new and existing tests passed.
I have updated the documentation.

changeset-bot · 2026-03-14T03:17:31Z

🦋 Changeset detected

Latest commit: e8f3806

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 45 packages

Name	Type
@module-federation/dts-plugin	Patch
@module-federation/cli	Patch
@module-federation/enhanced	Patch
@module-federation/manifest	Patch
@module-federation/metro	Patch
@module-federation/rspack	Patch
@module-federation/modern-js-v3	Patch
@module-federation/modern-js	Patch
@module-federation/nextjs-mf	Patch
@module-federation/node	Patch
@module-federation/rsbuild-plugin	Patch
@module-federation/rspress-plugin	Patch
@module-federation/storybook-addon	Patch
shared-tree-shaking-no-server-host	Patch
shared-tree-shaking-no-server-provider	Patch
@module-federation/metro-plugin-rnc-cli	Patch
@module-federation/metro-plugin-rnef	Patch
shared-tree-shaking-with-server-host	Patch
shared-tree-shaking-with-server-provider	Patch
node-dynamic-remote-new-version	Patch
node-dynamic-remote	Patch
remote5	Patch
remote6	Patch
website-new	Patch
@module-federation/runtime	Patch
@module-federation/webpack-bundler-runtime	Patch
@module-federation/sdk	Patch
@module-federation/runtime-tools	Patch
@module-federation/managers	Patch
@module-federation/third-party-dts-extractor	Patch
@module-federation/devtools	Patch
@module-federation/bridge-react	Patch
@module-federation/bridge-vue3	Patch
@module-federation/bridge-shared	Patch
@module-federation/bridge-react-webpack-plugin	Patch
@module-federation/retry-plugin	Patch
@module-federation/data-prefetch	Patch
@module-federation/error-codes	Patch
@module-federation/inject-external-runtime-core-plugin	Patch
@module-federation/runtime-core	Patch
create-module-federation	Patch
@module-federation/treeshake-server	Patch
@module-federation/treeshake-frontend	Patch
@module-federation/esbuild	Patch
@module-federation/utilities	Patch

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chatgpt-codex-connector · 2026-03-14T03:21:18Z

packages/dts-plugin/src/core/configurations/remotePlugin.ts

+  // if there are project references, infer the commonRoot from references
+  if (parsedCommandLine.projectReferences.length) {
+    const commonRoot = parsedCommandLine.projectReferences
+      .filter((file) => file.originalPath.startsWith('./'))


Include all relative references in rootDir inference

The new projectReferences branch only keeps entries whose originalPath starts with "./", so valid relative references like "../shared" or "packages/app" are ignored when computing commonRoot. In those cases the reducer effectively falls back to the first reference directory, which can set rootDir too deep and trigger TS6059 when exposed files live outside that folder. This makes solution-style tsconfigs with non-./ references fail even though they are valid.

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pkg-pr-new · 2026-03-16T02:30:29Z

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commit: e8f3806

github-actions · 2026-03-16T02:31:43Z

Bundle Size Report

11 package(s) changed, 29 unchanged.

Package dist + ESM entry

Package	Total dist (raw)	Delta	ESM gzip	Delta
`@module-federation/cli`	26.7 kB	no change	786 B	no change
`@module-federation/core`	39.1 kB	no change	173 B	no change
`@module-federation/devtools`	473.2 kB	no change	3.9 kB	no change
`@module-federation/dts-plugin`	302.3 kB	+1.1 kB (+0.4%)	4.5 kB	+3 B (+0.1%)
`@module-federation/enhanced`	810.7 kB	no change	672 B	no change
`@module-federation/managers`	69.9 kB	no change	334 B	no change
`@module-federation/manifest`	138.4 kB	no change	182 B	no change
`@module-federation/metro-plugin-rnc-cli`	0 B	no change	314 B	no change
`@module-federation/node`	189.2 kB	no change	217 B	no change
`@module-federation/storybook-addon`	76.8 kB	no change	100 B	no change
`@module-federation/utilities`	110.6 kB	no change	328 B	no change

Bundle targets

Package	Web bundle (gzip)	Delta	Node bundle (gzip)	Delta
`@module-federation/cli`	2.3 kB	-34 B (-1.4%)	2.3 kB	-34 B (-1.4%)
`@module-federation/core`	1.1 kB	-32 B (-2.9%)	1.0 kB	-31 B (-2.9%)
`@module-federation/devtools`	20.8 kB	-26 B (-0.1%)	20.8 kB	-26 B (-0.1%)
`@module-federation/dts-plugin`	13.9 kB	+58 B (+0.4%)	13.9 kB	+58 B (+0.4%)
`@module-federation/enhanced`	3.0 kB	-43 B (-1.4%)	3.0 kB	-43 B (-1.4%)
`@module-federation/managers`	2.4 kB	-27 B (-1.1%)	2.4 kB	-27 B (-1.1%)
`@module-federation/manifest`	6.2 kB	-38 B (-0.6%)	6.2 kB	-38 B (-0.6%)
`@module-federation/metro-plugin-rnc-cli`	411 B	-26 B (-5.9%)	411 B	-26 B (-5.9%)
`@module-federation/node`	9.2 kB	-29 B (-0.3%)	9.2 kB	-29 B (-0.3%)
`@module-federation/storybook-addon`	1.9 kB	-24 B (-1.2%)	1.7 kB	-23 B (-1.3%)
`@module-federation/utilities`	2.6 kB	-31 B (-1.2%)	2.6 kB	-31 B (-1.2%)

Consumer scenarios

Scenario	Web output (gzip)	Delta	Node output (gzip)	Delta	Gap (node-web)	Delta
Enhanced remoteEntry	19.5 kB	-19 B (-0.1%)	20.5 kB	-28 B (-0.1%)	+1.0 kB	-9 B

Total dist (raw): 6.31 MB (+1.1 kB (+0.0%))
Total ESM gzip: 73.4 kB (+3 B (+0.0%))
Total web bundle (gzip): 178.1 kB (-252 B (-0.1%))
Total node bundle (gzip): 178.6 kB (-250 B (-0.1%))
Tracked ./bundler entry gzip: 556 B (no change)
Tracked ./bundler web bundle (gzip): 4.5 kB (no change)
Tracked ./bundler node bundle (gzip): 4.5 kB (no change)

Bundle sizes are generated with rslib (Rspack). Package-root metrics preserve the historical report. Tracked subpath exports such as ./bundler are measured separately so ENV_TARGET-driven tree-shaking is visible. Bare imports are externalized to keep package-level sizes consistent, and assets are emitted as resources.

github-actions bot added the change: fix label Mar 14, 2026

eezhal92 mentioned this pull request Mar 14, 2026

dts-plugin throws: "Can not get effective rootDir" error in new vite 8+rolldown template project #4542

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fix(dts-plugin): infer root dir from tsconfig references

3d0f447

eezhal92 force-pushed the rootdir-solution-style branch from 75c30da to 3d0f447 Compare March 14, 2026 04:04

Merge branch 'main' into rootdir-solution-style

e8f3806

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fix(dts-plugin): infer root dir from tsconfig references to fix Vite 8 new template dev server failure#4543

fix(dts-plugin): infer root dir from tsconfig references to fix Vite 8 new template dev server failure#4543
eezhal92 wants to merge 2 commits intomodule-federation:mainfrom
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eezhal92 commented Mar 14, 2026

Description

Root cause

Fix

Related Issue

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