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babel-preset-proposal-typescript

v4.0.0

Published

Yet another Babel preset for TypeScript, only transforms proposals which TypeScript does not support now.

Downloads

3,622

Readme

babel-preset-proposal-typescript

GitHub Actions Codecov npm GitHub Release

Conventional Commits Renovate enabled JavaScript Style Guide Code Style: Prettier changesets

Yet another Babel preset for TypeScript, only transforms proposals which TypeScript does not support now.

So that you can use babel to transform proposals which are current in stage 0-2 and TypeScript team will not implement them temporarily.

TOC

Enabled proposal plugins

  1. async-do-expressions
  2. destructuring-private
  3. do-expressions
  4. duplicate-named-capturing-groups-regex
  5. function-bind
  6. function-sent
  7. import-defer
  8. import-wasm-source
  9. optional-chaining-assign
  10. partial-application
  11. pipeline-operator
  12. record-and-tuple
  13. regexp-modifiers
  14. throw-expressions
  15. v8intrinsic - Further Detail

Install

# yarn
yarn add -D babel-preset-proposal-typescript

# npm
npm i -D babel-preset-proposal-typescript

Options

| option | description | defaults | | ------------------------------- | ------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------- | | decoratorsBeforeExport | See Babel Document | undefined | | decoratorsLegacy | Whether to use legacy decorators semantic | true | | importDefer | Whether to enabled import-defer plugin, if true transform-modules-commonjs will be enabled automatically | false | | isTSX | Whether to enable jsx plugin with typescript | false, but true for /\.[jt]sx$/ | | optionalChainingAssignVersion | Version for optional-chaining-assign plugin, only '2023-07' allowed for now | '2023-07' | | pipelineOperator | Implementation of pipeline operator, minimal, smart or fsharp | minimal | | recordTuplePolyfill | Whether to enable import record-tuple plugin and polyfill, or specific the polyfill module name | true for Node>=14.6, it represents @bloomberg/record-tuple-polyfill | | recordTupleSyntaxType | record-tuple syntax, hash or bar | hash |

Usage

Note that unlike plugins, the presets are applied in an order of last to first (https://babeljs.io/docs/en/presets/#preset-ordering), so please make sure proposal-typescript is used at the last.

Via .babelrc (Recommended)

.babelrc

{
  "presets": ["proposal-typescript"]
}

Via CLI

babel input.ts --presets proposal-typescript > output.ts

Via Node API

require('@babel/core').transform('code', {
  presets: ['proposal-typescript'],
})

Via webpack

Pipe codes through babel-loader.

loader = {
  test: /\.[jt]sx?$/,
  loader: 'babel-loader',
  options: {
    presets: ['@babel/typescript', 'proposal-typescript'],
  },
}

// if you prefer `ts-loader` or `awesome-typescript-loader`
loader = {
  test: /\.tsx?$/,
  use: [
    {
      loader: 'ts-loader',
    },
    {
      loader: 'babel-loader',
      options: {
        presets: ['proposal-typescript'],
      },
    },
  ],
}

References

Sponsors

| 1stG | RxTS | UnTS | | ---------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | | 1stG Open Collective backers and sponsors | RxTS Open Collective backers and sponsors | UnTS Open Collective backers and sponsors |

Backers

Backers

| 1stG | RxTS | UnTS | | -------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | | 1stG Open Collective backers and sponsors | RxTS Open Collective backers and sponsors | UnTS Open Collective backers and sponsors |

Changelog

Detailed changes for each release are documented in CHANGELOG.md.

License

MIT © JounQin@1stG.me