Proto to assign transform

This 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:

var foo = { a: 1 };
var bar = { b: 2 };
bar.__proto__ = foo;
bar.a; // 1
bar.b; // 2

however the following will not:

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 transformer.

Example

In

bar.__proto__ = foo;

Out

_defaults(bar, foo);

Installation

$ npm install babel-plugin-transform-proto-to-assign

Usage

Add the following line to your .babelrc file:

{
  "plugins": ["transform-proto-to-assign"]
}