Type alias BabelOptions

Type declaration

• Optional enableFlow?: boolean | {
      requireDirective: boolean;
  }

  Enable support for stripping flow.js types using @babel/plugin-transform-flow-strip-types

  "@remarks" transpile only, no type checking

  • Default: false
  • if not set, then we check env ENABLE_BABEL_FLOW

  requireDirective behavior (defaulted to NOT required):

  • When this plugin is enabled, it's defaulted to not require the @flow directive in source.
  • To change this behavior, set this option to { requireDirective: true }

• Optional enableTypeScript?: boolean

  enable support for typescript types using @babel/preset-typescript

  "@remarks" transpile only, no type checking

  • Default: true
  • if not set, then we check env ENABLE_BABEL_TYPESCRIPT

• Optional excludeRegExp?: RegExp[]

  List of RegExp to match files that should not be transpiled by babel.

  This is checked after includeRegExp

• Optional includeRegExp?: RegExp[]

  List of RegExp to match files that should be included for transpiling.

  By default, files under node_modules are not transpiled.

  You can set this to control that. ie: to compile everything under node_modules, use [/node_modules/]

• Optional proposalDecorators?: boolean | {
      legacy: boolean;
  }

  Add @babel/plugin-proposal-decorators

  • Default: false
  • if not set, then we check env BABEL_PROPOSAL_DECORATORS

  legacyDecorators behavior (default to enabled):

  • When this plugin is enabled, it's defaulted to legacy decorators behavior.
  • To change this behavior, set this option to { legacy: false }

• Optional transformClassProps?: boolean | {
      loose: boolean;
  }

  Add @babel/plugin-proposal-class-properties for class properties support

  • Default: false
  • if not set, then we check env BABEL_CLASS_PROPS

  looseClassProps behavior (default to enabled):

  • When this plugin is enabled, it's defaulted to loose class props setting, which compile to assignment expression instead of Object.defineProperty
  • To change loose class props behavior, set this option to { loose: false },