92 lines
1.3 KiB
Markdown
92 lines
1.3 KiB
Markdown
# babel-plugin-transform-es2015-spread
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> Compile ES2015 spread to ES5
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## Example
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**In**
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```js
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var a = ['a', 'b', 'c'];
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var b = [...a, 'foo'];
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var c = { foo: 'bar', baz: 42 };
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var d = {...c, a: 2};
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```
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**Out**
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```js
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var _extends = Object.assign || function (target) {
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for (var i = 1; i < arguments.length; i++) {
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var source = arguments[i];
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for (var key in source) {
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if (Object.prototype.hasOwnProperty.call(source, key)) {
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target[key] = source[key];
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}
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}
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}
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return target;
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}
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var a = [ 'a', 'b', 'c' ];
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var b = [].concat(a, [ 'foo' ]);
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var c = { foo: 'bar', baz: 42 };
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var d = _extends({}, c, { a: 2 });
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```
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## Installation
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```sh
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npm install --save-dev babel-plugin-transform-es2015-spread
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```
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## Usage
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### Via `.babelrc` (Recommended)
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**.babelrc**
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Without options:
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```json
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{
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"plugins": ["transform-es2015-spread"]
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}
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```
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With options:
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```json
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{
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"plugins": [
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["transform-es2015-spread", {
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"loose": true
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}]
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]
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}
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```
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### Via CLI
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```sh
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babel --plugins transform-es2015-spread script.js
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```
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### Via Node API
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```javascript
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require("babel-core").transform("code", {
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plugins: ["transform-es2015-spread"]
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});
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```
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## Options
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### `loose`
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`boolean`, defaults to `false`.
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In loose mode, **all** iterables are assumed to be arrays.
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