This plugin allows Babel to 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.
In
bar.__proto__ = foo;
Out
var _defaults = ...; _defaults(bar, foo);
npm install --save-dev babel-plugin-transform-proto-to-assign
.babelrc
(Recommended).babelrc
{ "plugins": ["transform-proto-to-assign"] }
babel --plugins transform-proto-to-assign script.js
require("babel-core").transform("code", { plugins: ["transform-proto-to-assign"] });
© 2018 Sebastian McKenzie
Licensed under the MIT License.
http://babeljs.io/docs/plugins/transform-proto-to-assign/