The Publish preview packages Actions job failed before artifact publishing because actions/setup-node was configured with node-version-file: ".node-version" while the repository was never checked out in that job. As a result, .node-version was missing at runtime.

• Workflow fix (.github/workflows/javascript.yml)

  • Added actions/checkout@v4 as the first step in the preview job.
  • Kept existing publish flow unchanged (artifact download + pkg-pr-new publish invocation).

• Why this resolves the failure

  • Ensures .node-version exists in the workspace before setup-node reads it.

preview:
  steps:
    - uses: actions/checkout@v4
    - uses: actions/setup-node@v4
      with:
        node-version-file: ".node-version"