1 | # babel-plugin-transform-es2015-parameters
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2 |
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3 | > Compile ES2015 default and rest parameters to ES5
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4 |
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5 | This plugin transforms ES2015 parameters to ES5, this includes:
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6 |
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7 | - Destructuring parameters
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8 | - Default parameters
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9 | - Rest parameters
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10 |
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11 | ## Installation
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12 |
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13 | ```sh
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14 | npm install --save-dev babel-plugin-transform-es2015-parameters
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15 | ```
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16 |
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17 | ## Caveats
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18 |
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19 | Default parameters desugar into `let` declarations to retain proper semantics. If this is
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20 | not supported in your environment then you'll need the
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21 | [transform-block-scoping](http://babeljs.io/docs/plugins/transform-es2015-block-scoping) plugin.
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22 |
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23 | ## Usage
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24 |
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25 | ### Via `.babelrc` (Recommended)
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26 |
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27 | **.babelrc**
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28 |
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29 | ```json
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30 | {
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31 | "plugins": ["transform-es2015-parameters"]
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32 | }
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33 | ```
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34 |
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35 | ### Via CLI
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36 |
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37 | ```sh
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38 | babel --plugins transform-es2015-parameters script.js
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39 | ```
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40 |
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41 | ### Via Node API
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42 |
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43 | ```javascript
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44 | require("babel-core").transform("code", {
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45 | plugins: ["transform-es2015-parameters"]
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46 | });
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47 | ```
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