This plugin transforms undefined into void 0 which returns undefined regardless of if it's been reassigned
This plugin transforms undefined
into void 0
which returns undefined regardless of if it’s been reassigned.
In
foo === undefined;
Out
foo === void 0;
npm install babel-plugin-transform-undefined-to-void
.babelrc
(Recommended).babelrc
{ "plugins": ["transform-undefined-to-void"] }
babel --plugins transform-undefined-to-void script.js
require("babel-core").transform("code", { plugins: ["transform-undefined-to-void"] });
© 2018 Sebastian McKenzie
Licensed under the MIT License.
http://babeljs.io/docs/plugins/transform-undefined-to-void/