# .github/workflows/reusable.yml
on:
  workflow_call:
    inputs:
      name:
        type: string
        required: true
    secrets:
      password:
        required: true
...

# .github/workflows/test.yml
...

jobs:
  missing-required:
    uses: ./.github/workflows/reusable.yml
    with:
      # ERROR: Undefined input "user"
      user: rhysd
      # ERROR: Required input "name" is missing
    secrets:
      # ERROR: Undefined secret "credentials"
      credentials: my-token
      # ERROR: Required secret "password" is missing

# .github/workflows/reusable.yml
on:
  workflow_call:
    inputs:
      id:
        type: number
      message:
        type: string
...

# .github/workflows/test.yml
...

jobs:
  type-checks:
    uses: ./.github/workflows/reusable.yml
    with:
      # ERROR: Cannot assign string value to number input. format() returns string value
      id: ${{ format('runner name is {0}', runner.name) }}
      # ERROR: Cannot assign null to string input. If you want to pass string "null", use ${{ 'null' }}
      message: null

jobs:
  test:
    # ERROR: This workflow file does not exist
    with: ./.github/workflows/does-not-exist.yml

# .github/workflows/get-build-info.yml
on:
  workflow_call:
    outputs:
      version:
        value: ...
        description: version of software
...

# .github/workflows/test.yml
...

jobs:
  # This job's outputs object is typed as {version: string}
  get_build_info:
    uses: ./.github/workflows/get-build-info.yml
  downstream:
    needs: [get_build_info]
    runs-on: ubuntu-latest
    steps:
      # OK. `version` is defined in the reusable workflow
      - run: echo '${{ needs.get_build_info.outputs.version }}'
      # ERROR: `tag` is not defined in the reusable workflow
      - run: echo '${{ needs.get_build_info.outputs.tag }}'