action.yaml

name: Authenticate npm with Google Artifact Registry
description: Generates an .npmrc file which configures authentication with Google Artifact Registry
inputs:
  scope:
    description: The Node.js Package Scope
    required: true
  project:
    description: The Google Cloud Platform project to push to
    required: true
  repository:
    description: The repository in Google Artifact Registry to push to
    required: true
  region:
    description: The Google Cloud Platform region where the repository is located
    required: true
    default: europe-west3
  serviceAccountKey:
    description: The Service Account key to authenticate with Google Artifact Registry
    required: true
runs:
  using: composite
  steps:
    - name: Authenticate with Google Cloud
      id: auth
      uses: google-github-actions/auth@v2
      with:
        credentials_json: ${{ inputs.serviceAccountKey }}
        token_format: access_token
        create_credentials_file: false
    - name: Generate .npmrc
      shell: bash
      run: |
        cat > .npmrc <<EOF
        @${{ inputs.scope }}:registry=https://${{ inputs.region }}-npm.pkg.dev/${{ inputs.project }}/${{ inputs.repository }}/
        //${{ inputs.region }}-npm.pkg.dev/${{ inputs.project }}/${{ inputs.repository }}/:always-auth=true
        //${{ inputs.region }}-npm.pkg.dev/${{ inputs.project }}/${{ inputs.repository }}/:_authToken=${{ steps.auth.outputs.access_token }}
        EOF