@nozomiishii/lefthook-config/hooks/pre-commit/lint/file-extension/test.yaml

Nozomi's Recommended lefthook config

pre-commit:
  commands:
    lint-file-extension-test:
      files: git diff --name-only --staged
      glob: '*.spec.{js,ts}'
      run: echo "Error! ".spec.{js,ts}" extension found, please use ".test.ts" instead." && exit 1