6.26.0 • Published 7 years ago
babel-plugin-transform-proto-to-assign v6.26.0
babel-plugin-transform-proto-to-assign
This plugin allows Babel to transform all
__proto__
assignments to a method that will do a shallow copy of all properties.
Detail
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
In
bar.__proto__ = foo;
Out
var _defaults = ...;
_defaults(bar, foo);
Installation
npm install --save-dev 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"]
});
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