🐛 PARSE_ERROR on type export when building inside a pnpm script on github

[cruzdanilo]

Problem

the issue only happens in a very specific case:

• library builds on prepare (repro: https://github.com/cruzdanilo/repro-pkgroll-lib)
• library has a type-only reexport (https://github.com/cruzdanilo/repro-pkgroll-lib/blob/main/src/index.ts#L1)
• other package uses the library as a git dependency (repro: https://github.com/cruzdanilo/repro-pkgroll-ci)
• other package install dependencies during a github action (repro: https://github.com/cruzdanilo/repro-pkgroll-ci/actions/runs/11057662251/job/30721965511)

error:

Error [RollupError]: src/Foo.ts (1:15): Expression expected (Note that you need plugins to import files that are not JavaScript)
    at Object.getRollupError (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/parseAst.js:282:41)
    ... 4 lines matching cause stack trace ...
    at async ModuleLoader.addModuleSource (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/rollup.js:20163:13) {
  cause: Error [RollupError]: Expression expected
      at Object.getRollupError (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/parseAst.js:282:41)
      at ParseError.initialise (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/rollup.js:14107:40)
      at convertNode (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/rollup.js:15717:10)
      at convertProgram (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/rollup.js:15061:12)
      at Module.setSource (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/rollup.js:16679:24)
      at async ModuleLoader.addModuleSource (/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/node_modules/.pnpm/[email protected]/node_modules/rollup/dist/shared/rollup.js:20163:13) {
    code: 'PARSE_ERROR',
    pos: 15
  },
  code: 'PARSE_ERROR',
  id: '/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/src/Foo.ts',
  pos: 15,
  loc: {
    column: 15,
    file: '/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/src/Foo.ts',
    line: 1
  },
  frame: '1: export default interface Foo {}\n                  ^',
  watchFiles: [
    '/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/src/index.ts',
    '/home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1799_ec9c655ee68917aa8e2862cfd73c8666/src/Foo.ts'
  ],
  [Symbol(augmented)]: true
}

seems like the file is being interpreted as javascript.
the error doesn't happen in multiple machines i tried (macos and linux)

Expected behavior

no error

Minimal reproduction URL

https://github.com/cruzdanilo/repro-pkgroll-ci/actions/runs/11057662251/job/30721965511

Version

v2.5.0

Node.js version

v22.9.0

Package manager

pnpm

Operating system

Linux

Bugs are expected to be fixed by those affected by it

• I'm interested in working on this issue

Compensating engineering work financially will speed up resolution

• I'm willing to offer financial support

[privatenumber]

Interesting use-case.

I'm thinking it doesn't work because pkgroll expects it to be executed when the CWD is the root of the project.

Feel free to submit a PR!

[cruzdanilo]

@privatenumber sure. i will check the actual cwd, but how would it affect ts vs js? it is also weird that it doesn't happen in other environments.

[privatenumber]

Not sure—I was just speculating since I think that's a pretty big assumption I made when I was developing it.
Please investigate and report back if you can

[cruzdanilo]

some findings:

• it runs from a temp dir, ex: /home/runner/setup-pnpm/node_modules/.bin/store/v3/tmp/_tmp_1899_624633c3449ae285a3524f3806c80932
• the working dir is the library root, but it doesn't have a .git dir
• github's locale is C.UTF-8 instead of the usual en_US.UTF-8, which causes file sorting to be different