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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
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| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/@babel/plugin-transform-destructuring/README.md | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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| -rw-r--r-- | node_modules/@babel/plugin-transform-destructuring/README.md | 104 |
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diff --git a/node_modules/@babel/plugin-transform-destructuring/README.md b/node_modules/@babel/plugin-transform-destructuring/README.md new file mode 100644 index 00000000..d31e0e20 --- /dev/null +++ b/node_modules/@babel/plugin-transform-destructuring/README.md @@ -0,0 +1,104 @@ +# @babel/plugin-transform-destructuring + +> Compile ES2015 destructuring to ES5 + +## Examples + +**In** + +```javascript +let {x, y} = obj; + +let [a, b, ...rest] = arr; +``` + +**Out** + +```javascript +function _toArray(arr) { ... } + +let _obj = obj, + x = _obj.x, + y = _obj.y; + +let _arr = arr, + _arr2 = _toArray(_arr), + a = _arr2[0], + b = _arr2[1], + rest = _arr2.slice(2); +``` + +## Installation + +```sh +npm install --save-dev @babel/plugin-transform-destructuring +``` + +## Usage + +### Via `.babelrc` (Recommended) + +**.babelrc** + +```json +{ + "plugins": ["@babel/plugin-transform-destructuring"] +} +``` + +### Via CLI + +```sh +babel --plugins @babel/plugin-transform-destructuring script.js +``` + +### Via Node API + +```javascript +require("@babel/core").transform("code", { + plugins: ["@babel/plugin-transform-destructuring"] +}); +``` + +## Options + +### `loose` + +`boolean`, defaults to `false`. + +Enabling this option will assume that what you want to destructure is an array and won't use `Array.from` on other iterables. + +### `useBuiltIns` + +`boolean`, defaults to `false`. + +Enabling this option will use `Object.assign` directly instead of the Babel's `extends` helper. + +##### Example + +**.babelrc** + +```json +{ + "plugins": [ + ["@babel/plugin-transform-destructuring", { "useBuiltIns": true }] + ] +} +``` + +**In** + +```js +var { ...x } = z; +``` + +**Out** + +```js +var _z = z, + x = Object.assign({}, _z); +``` + +## References + +* [MDN: Destructuring assignment](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment) |
