tools/.eslintrc.yaml

rules:
  comma-dangle:
    - error
    - arrays: 'always-multiline'
      objects: 'only-multiline'
      imports: 'only-multiline'
      exports: 'only-multiline'
  no-unused-vars: [error, { args: 'after-used' }]
  prefer-arrow-callback: error
  no-var: error