Aspires to bring finished ECMAScript proposals to AVA's test and helper files.
Built-ins are not added or extended, so features like Proxies,
String.prototype.padStart will only be available if the Node.js version running the tests supports it. Consult node.green for details.
Sometimes a particular feature is mostly implemented in Node.js. In that case transforms are not applied.
Not all proposals can be supported via Babel transforms, see below for details. Babel may require "syntax" plugins in order to parse certain files. These plugins should be applied explicitly since this preset may not include them.
$ npm install --save @ava/babel-preset-stage-4
@ava/stage-4 to your Babel presets.
For more information on setting options for a preset, refer to the preset options documentation.
By default this preset transform ES2015 modules to CommonJS. Set to
false to disable this behavior. Other values are ignored.
@babel/plugin-proposal-async-generator-functions relies on
Symbol.asyncIterator, which AVA does not polyfill for you.