babel-preset-proposal-typescript
v4.0.0
Published
Yet another Babel preset for TypeScript, only transforms proposals which TypeScript does not support now.
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babel-preset-proposal-typescript
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
- async-do-expressions
- destructuring-private
- do-expressions
- duplicate-named-capturing-groups-regex
- function-bind
- function-sent
- import-defer
- import-wasm-source
- optional-chaining-assign
- partial-application
- pipeline-operator
- record-and-tuple
- regexp-modifiers
- throw-expressions
- 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 | | ---------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | | | | |
Backers
| 1stG | RxTS | UnTS | | -------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | | | | |
Changelog
Detailed changes for each release are documented in CHANGELOG.md.