False positive error for action output

まず、issue に示されている GitHub Actions YAML で報告された EA811 の診断を再現し、その後、action の出力割り当てに使用される式を validator がどのように処理しているかを調べます。完了の条件は、示された workflow が誤った 'output does not exist' エラーを生成しなくなり、実際に不足している出力は引き続き検出できることです。

On example on this run:

EA811: action create-featurenet step 5 Called step with id 'get-argocd-featurnet-app-name' output 'name' does not exist
EA811: action create-featurenet step 6 Called step with id 'get-argocd-featurnet-app-name' output 'name' does not exist
EA811: action create-featurenet step 8 Called step with id 'get-argocd-featurnet-app-name' output 'name' does not exist
EA811: action delete-featurenet step 6 Called step with id 'get-argocd-featurnet-app-name' output 'name' does not exist
EA811: action delete-featurenet step 9 Called step with id 'get-argocd-featurnet-app-name' output 'name' does not exist
This error comes from the below code

    - name: Get argocd featurenet app name
      id: get-argocd-featurnet-app-name
      shell: bash
      env:
        # yamllint disable-line rule:line-length
        APP_NAME: ${{ inputs.featurenet-name != '' && inputs.featurenet-name || format('{0}{1}', 'fe-', steps.get-ref-properties.outputs.branch-name-for-argo) }}
      run: |
        echo "name=${{ env.APP_NAME }}" >> $GITHUB_OUTPUT

Most likely problem is that validator sees GH expression and cannot parse name identifier correctly.

The workaround is:

    - name: Get argocd featurenet app name
      id: get-argocd-featurnet-app-name
      shell: bash
      env:
        # yamllint disable-line rule:line-length
        APP_NAME: ${{ inputs.featurenet-name != '' && inputs.featurenet-name || format('{0}{1}', 'fe-', steps.get-ref-properties.outputs.branch-name-for-argo) }}
      run: |
        name_local=${{ env.APP_NAME }}
        echo "name=$name_local" >> $GITHUB_OUTPUT