babel-plugin-polyfill-corejs3

Install

Using npm:

sh npm install --save-dev babel-plugin-polyfill-corejs3

or using yarn:

sh yarn add babel-plugin-polyfill-corejs3 --dev

Usage

Add this plugin to your Babel configuration:

json { "plugins": [["polyfill-corejs3", { "method": "usage-global", "version": "3.20" }]] }

This package supports the usage-pure, usage-global, and entry-global methods. When entry-global is used, it replaces imports to core-js.

Options

See here for a list of options supported by every polyfill provider.

version

string, defaults to "3.0".

This option only has an effect when used alongside "method": "usage-global" or "method": "usage-pure". It is recommended to specify the minor version you are using as core-js@3.0 may not include polyfills for the latest features. If you are bundling an app, you can provide the version directly from your node modules:

js { plugins: [ ["polyfill-corejs3", { "method": "usage-pure", // use `core-js/package.json` if you are using `usage-global` "version": require("core-js-pure/package.json").version }] ] }

If you are a library author, specify a reasonably modern core-js version in your package.json and provide the plugin the minimal supported version.

json { "dependencies": { "core-js": "^3.20.0" } } js { plugins: [ ["polyfill-corejs3", { "method": "usage-global", // improvise if you have more complicated version spec, e.g. > 3.1.4 "version": require("./package.json").dependencies["core-js"] }] ] }

proposals

boolean, defaults to false.

This option only has an effect when used alongside "method": "usage-global" or "method": "usage-pure". When proposals are true, any ES proposal supported by core-js will be polyfilled as well.