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Contents
# babel-plugin-proto-to-assign
The `proto-to-assign`plugin will transform all `__proto__` assignments to a method that will do a shallow copy of
all properties.
This means that the following **will** work:
```javascript
var foo = { a: 1 };
var bar = { b: 2 };
bar.__proto__ = foo;
bar.a; // 1
bar.b; // 2
```
however the following **will not**:
```javascript
var foo = { a: 1 };
var bar = { b: 2 };
bar.__proto__ = foo;
bar.a; // 1
foo.a = 2;
bar.a; // 1 - should be 2 but remember that nothing is bound and it's a straight copy
```
This is a case that you have to be aware of if you intend to use this plugin.
## Example
**In**
```javascript
bar.__proto__ = foo;
```
**Out**
```javascript
var _defaults = ...;
_defaults(bar, foo);
```
## Installation
```sh
$ npm install babel-plugin-proto-to-assign
```
## Usage
### Via `.babelrc` (Recommended)
**.babelrc**
```json
{
"plugins": ["proto-to-assign"]
}
```
### Via CLI
```sh
$ babel --plugins proto-to-assign script.js
```
### Via Node API
```javascript
require("babel-core").transform("code", {
plugins: ["proto-to-assign"]
});
```
Version data entries
8 entries across 8 versions & 3 rubygems