eslint-plugin-babel

NOTE: eslint-plugin-babel is now `@babel/eslint-plugin` and has moved into the Babel monorepo.

An eslint plugin companion to babel-eslint. babel-eslint does a great job at adapting eslint for use with Babel, but it can't change the built in rules to support experimental features. eslint-plugin-babel re-implements problematic rules so they do not give false positives or negatives.

Requires Node 4 or greater

Install

npm install eslint-plugin-babel --save-dev

Load the plugin in your .eslintrc file:

{
  "plugins": [
    "babel"
  ]
}

Finally enable all the rules you would like to use (remember to disable the original ones as well!).

{
  "rules": {
    "babel/new-cap": 1,
    "babel/camelcase": 1,
    "babel/no-invalid-this": 1,
    "babel/object-curly-spacing": 1,
    "babel/quotes": 1,
    "babel/semi": 1,
    "babel/no-unused-expressions": 1,
    "babel/valid-typeof": 1
  }
}

Rules

Each rule corresponds to a core eslint rule, and has the same options.

🛠: means it's autofixable with --fix.

babel/new-cap: Ignores capitalized decorators (@Decorator)
babel/camelcase: doesn't complain about optional chaining (var foo = bar?.a_b;)
babel/no-invalid-this: doesn't fail when inside class properties (class A { a = this.b; })
babel/object-curly-spacing: doesn't complain about export x from "mod"; or export * as x from "mod"; (🛠)
babel/quotes: doesn't complain about JSX fragment shorthand syntax (<>foo</>;)
babel/semi: doesn't fail when using for await (let something of {}). Includes class properties (🛠)
babel/no-unused-expressions: doesn't fail when using do expressions or optional chaining (a?.b()).
babel/valid-typeof: doesn't complain when used with BigInt (typeof BigInt(9007199254740991) === 'bigint').

Deprecated

Rule	Notes
`babel/generator-star-spacing`	Use `generator-star-spacing` since eslint@3.6.0
`babel/object-shorthand`	Use `object-shorthand` since eslint@0.20.0
`babel/arrow-parens`	Use `arrow-parens` since eslint@3.10.0
`babel/func-params-comma-dangle`	Use `comma-dangle` since eslint@3.8.0
`babel/array-bracket-spacing`	Use `array-bracket-spacing` since eslint@3.9.0
`babel/flow-object-type`	Use `flowtype/object-type-delimiter` since eslint-plugin-flowtype@2.23.0
`babel/no-await-in-loop`	Use `no-await-in-loop` since eslint@3.12.0

License

babel/eslint-plugin-babel

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