Package Exports

babel-plugin-transform-proto-to-assign

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (babel-plugin-transform-proto-to-assign) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

babel-plugin-transform-proto-to-assign

The proto-to-assignplugin 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 plugin.

Example

bar.__proto__ = foo;

Out

var _defaults = ...;

_defaults(bar, foo);

Installation

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

Usage

Via `.babelrc` (Recommended)

.babelrc

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

Via CLI

$ babel --plugins transform-proto-to-assign script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["transform-proto-to-assign"]
});