前提条件

npm側でTrusted Publishing設定を済ませている
pnpm publishでnpmにアップロードしたいモチベーション

躓き集

`ERR_PNPM_GIT_UNKNOWN_BRANCH`

問題

Run pnpm publish --access public
 ERR_PNPM_GIT_UNKNOWN_BRANCH  The Git HEAD may not attached to any branch, but your "publish-branch" is set to "master|main".

解決
--no-git-checksオプションを忘れずに

   - name: Publish to npm
-      run: pnpm publish --access public
+      run: pnpm publish --access public --no-git-checks

`ENEEDAUTH`

問題

npm error code ENEEDAUTH
npm error need auth This command requires you to be logged in to https://registry.npmjs.org/
npm error need auth You need to authorize this machine using `npm adduser`
npm error A complete log of this run can be found in: /home/runner/.npm/_logs/2026-01-24T03_19_30_445Z-debug-0.log

解決
pnpm/action-setup@v4アクションだけではなく、actions/setup-node@4アクションでregistry-urlを指定する必要がありました

    - name: Checkout repository
      uses: actions/checkout@v4

+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: 24
+        registry-url: "https://registry.npmjs.org"

    - name: Setup pnpm
      uses: pnpm/action-setup@v4
      with:

`E404`

問題

npm notice
npm notice Publishing to https://registry.npmjs.org/ with tag latest and public access
npm notice Access token expired or revoked. Please try logging in again.
npm error code E404
npm error 404 Not Found - PUT https://registry.npmjs.org/@konbraphat51%2faffectiveslidervue - Not found
npm error 404
npm error 404  '@konbraphat51/affectiveslidervue@0.0.2' is not in this registry.
npm error 404
npm error 404 Note that you can also install from a
npm error 404 tarball, folder, http url, or git url.
npm error A complete log of this run can be found in: /home/runner/.npm/_logs/2026-01-24T03_37_29_705Z-debug-0.log

解決
なんと、node.jsのバージョンが24以上じゃないとtrusted publishingが使えないようです。

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
-       node-version: 22.x
+       node-version: '24'
        registry-url: "https://registry.npmjs.org"

最終的なyamlファイル

.github/workflows/publish.yml

name: Publish

on:
  release:
    types: [published]
  workflow_dispatch:

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: '24'
        registry-url: "https://registry.npmjs.org"

    - name: Setup pnpm
      uses: pnpm/action-setup@v4
      with:
        version: 10
    
    - name: Install dependencies
      run: pnpm i --frozen-lockfile

    - name: Run tests
      run: pnpm run test:run
        
    - name: Build package
      run: pnpm run build
    
    - name: Publish to npm
      run: pnpm publish --access public --no-git-checks