[Bug]: SyntaxError: Unexpected token 'export'

[Janealter]

Version

1.50.1

Steps to reproduce

1. Make a package that exports TS files to use them in tests
2. Import a TS module from this package in any test file

Expected behavior

Imported external TS module from the package should work as any local module

Actual behavior

Imported external TS module doesn't work because Playwright tries to run it differently than the local ones

Additional context

The log of playwright test shows:

SyntaxError: Unexpected token 'export'

   at shared/utils/prepare-test.ts:1

> 1 | import { PlaywrightUtils } from '@company/fe-kit/static/utils/playwright';
    | ^
  2 |
  3 | import { API_REGEX, INITIAL_REQUEST_DATA_MAP, WEBSOCKET_GLOB } from '../constants';
  4 | import { PlaywrightTestArgs } from '@playwright/test';
    at Object.<anonymous> (/Users/janealter/Projects/web-ui/e2e/shared/utils/prepare-test.ts:1:1)
    at Object.<anonymous> (/Users/janealter/Projects/web-ui/e2e/shared/utils/index.ts:2:1)
    at Object.<anonymous> (/Users/janealter/Projects/web-ui/e2e/Store Setup/Screens/Screen/Banners/Banner/image-pick.spec.ts:2:1)

The imported module is just a usual TS file with a few exports, nothing special

Environment

System:
    OS: macOS 15.4
    CPU: (12) arm64 Apple M3 Pro
    Memory: 76.25 MB / 36.00 GB
  Binaries:
    Node: 22.11.0 - ~/.nvm/versions/node/v22.11.0/bin/node
    npm: 10.9.0 - ~/.nvm/versions/node/v22.11.0/bin/npm
  Languages:
    Bash: 3.2.57 - /bin/bash
  npmPackages:
    @playwright/test: 1.50.1 => 1.50.1 
    playwright-test-coverage: 1.2.12 => 1.2.12

[agg23]

Please provide an exact repro of this issue. We have a large number of users using TypeScript daily and have not encountered this issue, so it's likely a problem with your environment.

[pavelfeldman]

Imported external TS module from the package should work as any local module

That's a wrong expectation, Playwright does not transpile the TS files from modules it depends on because TS is not a valid form of packing a Node module, it is not JS.