Cannot find module 'rollup/parseAst' or its corresponding type declarations.

[sagargurtu]

Rollup Version

v4.0.2

Operating System (or Browser)

Chrome

Node Version (if applicable)

No response

Link To Reproduction

https://stackblitz.com/edit/parseast-error?file=src%2Fmain.ts,tsconfig.json

Expected Behaviour

Importing from 'rollup/parseAst' should not throw error.

Actual Behaviour

Importing from 'rollup/parseAst' throws the following error:

Cannot find module 'rollup/parseAst' or its corresponding type declarations.

[lukastaegert]

Unfortunately, this only works if you set "moduleResolution": "node16" (or "bundler") in your tsconfig.json.

[sagargurtu]

"node16" has its own set of issues. Reproduction: https://stackblitz.com/edit/parseast-error-gfgsbm?file=src%2Fmain.ts

See microsoft/TypeScript#50058

Do you have a workaround?

[TrickyPi]

One workaround, Setting "moduleResolution": "Bundler" in your tsconfig.json.

[skhaz]

I am still experiencing this issue. Why has it been closed?

[okinawaa]

me too still experiencing this issue.

[AmorZhao]

Also still experiencing this issue.

[lukastaegert]

I am still experiencing this issue. Why has it been closed?

Because everything is working as intended and setting moduleResolution: "bundler" or "node16" fixes it. If you cannot do that for some reason, you can instead try to import from "rollup/dist/parseAst" or "rollup/dist/parseAst.js", which is the actual file location.

[dirkluijk]

Note that this is breaking for anyone having a TS project with ES modules using rollup as transitive dependency. For example, I am using vitest, which depends on vite, which has an import for rollup/parseAst that breaks for me.

My workaround now is to add a custom mapping in my tsconfig.json:

"paths": {
  // workaround for: https://github.com/vitest-dev/vitest/issues/4567
  "rollup/parseAst": ["./node_modules/rollup/dist/parseAst"]
}

I am not an export in module systems in the JavaScript ecosystem. Should I report this with Vitest?

[dirkluijk]

Never mind, adding "skipLibCheck": true resolved the issue for me and doesn't require any hacky workaround.

[skhaz]

skipLibCheck is a hack IMO.

[jordi-studyportals]

I ran into this issue while using vitest. I got the rollup error because vitest was using vite, so I couldn't change the import.
node_modules/vite/dist/node/index.d.ts:5:41 - error TS2307: Cannot find module 'rollup/parseAst' or its corresponding type declarations.

My problem was caused by tsc because my test folder and vitest.config.ts file were included into the typescript build of my project by accident. I had to add the folder and the vitest.config.ts file to the exluded items in my tsconfig and that resolved the issues for me.

[dirkluijk]

As suggested by @jordi-studyportals, I removed skipLibCheck: true and added "vitest.config.ts" and "**/**.test.ts" to my tsconfig exclude list instead. That did the trick.