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[Bug]: Wrong line numbers in reports with type: module in package.json and Node.js 24.12.0 #38578

Closed
#38584
Closed
[Bug]: Wrong line numbers in reports with type: module in package.json and Node.js 24.12.0#38578
#38584

Description

@dword-design
Sebastian Landwehr (dword-design)
opened on Dec 16, 2025

Version

1.57.0

Steps to reproduce

  1. Clone https://github.com/dword-design/demo-playwright-tests-wrong-line-numbers
  2. Have Node.js 24.12.0 installed and active
  3. npm ci
  4. npx playwright test
import { test } from '@playwright/test';

test('test', () => {});

Expected behavior

Running 1 test using 1 worker

  ✓  1 tests/example.spec.ts:3:1 › test (1ms)

  1 passed (396ms)

Actual behavior

Running 1 test using 1 worker

  ✓  1 tests/example.spec.ts:2:1 › test (1ms)

  1 passed (396ms)

Additional context

  • I think it's related to fix(test runner): prevent esm loader deadlock #36187 where the source map loading was unblocked, but I guess the source maps are not there when the tests are loaded
  • It works when type: module is removed from package.json
  • It works in other Node.js versions, it only doesn't work with 24.12.0
  • I also somehow got it to work with PLAYWRIGHT_WAIT_FOR_SOURCE_MAPS but it also lead to infinite loading issues (which probably is why the behavior has been changed)

Environment

System:
    OS: macOS 15.5
    CPU: (8) arm64 Apple M1 Pro
    Memory: 129.92 MB / 16.00 GB
  Binaries:
    Node: 24.12.0 - /Users/sebastianlandwehr/.nvm/versions/node/v24.12.0/bin/node
    Yarn: 1.22.22 - /Users/sebastianlandwehr/.nvm/versions/node/v24.12.0/bin/yarn
    npm: 11.6.2 - /Users/sebastianlandwehr/.nvm/versions/node/v24.12.0/bin/npm
    pnpm: 10.26.0 - /Users/sebastianlandwehr/.nvm/versions/node/v24.12.0/bin/pnpm
  IDEs:
    VSCode: 1.106.3 - /usr/local/bin/code
  Languages:
    Bash: 3.2.57 - /bin/bash
  npmPackages:
    @playwright/test: ^1.57.0 => 1.57.0

Activity

  1. Sebastian Landwehr (dword-design)
    changed the title [-][Bug]: Wrong line numbers in reports with type: module in package.json[/-] [+][Bug]: Wrong line numbers in reports with type: module in package.json and Node.js 24.12.0[/+] on Dec 16, 2025

  2. yury-s commented on Dec 16, 2025

    @yury-s
    Yury Semikhatsky (yury-s)
    on Dec 16, 2025
    Member

    I can reproduce it. Likely culprit is nodejs/node#60380

  3. Pavel Feldman (pavelfeldman)
    closed this as completedin #38584on Dec 16, 2025

  4. pavelfeldman commented on Dec 17, 2025

    @pavelfeldman
    Pavel Feldman (pavelfeldman)
    on Dec 17, 2025
    Member

    I'll keep it open to catch upvotes, we might want to issue 1.57.1 over it.

  5. Pavel Feldman (pavelfeldman)
    reopened this on Dec 17, 2025

  6. dword-design commented on Dec 17, 2025

    @dword-design
    Sebastian Landwehr (dword-design)
    on Dec 17, 2025
    ContributorAuthor

    Pavel Feldman (@pavelfeldman) Ok thanks already!

  7. pavelfeldman commented on Dec 22, 2025

    @pavelfeldman
    Pavel Feldman (pavelfeldman)
    on Dec 22, 2025
    Member

    (@playwright/test@next has the fix for those affected)

  8. Sebastian Landwehr (dword-design)
    closed this as completedon Dec 23, 2025
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