Moti Zilberman f8ddd80f96 Greater spec compliance for class properties (#4544)
* Desugar class properties to Object.defineProperty per spec
* Define uninitialized static class properties with value=undefined
* Make class-properties increased spec compliance opt-in (spec: true)
2016-11-15 16:35:51 -05:00

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# babel-plugin-transform-class-properties
## Installation
```sh
$ npm install babel-plugin-transform-class-properties
```
### Options: `spec`
- Class properties are compiled to use `Object.defineProperty`
- Static fields are now defined even if they are not initialized
## Usage
### Via `.babelrc` (Recommended)
**.babelrc**
```json
// without options
{
"plugins": ["transform-class-properties"]
}
// with options
{
"plugins": [
["transform-class-properties", { "spec": true }]
]
}
```
### Via CLI
```sh
$ babel --plugins transform-class-properties script.js
```
### Via Node API
```javascript
require("babel-core").transform("code", {
plugins: ["transform-class-properties"]
});
```