* add tests on @babel/helper-optimise-call-expression * fix: correctly optimise `a.b?.(...arguments)` * add integration test with properties transform
@babel/plugin-proposal-class-properties
This plugin transforms static class properties as well as properties declared with the property initializer syntax
See our website @babel/plugin-proposal-class-properties for more information.
Install
Using npm:
npm install --save-dev @babel/plugin-proposal-class-properties
or using yarn:
yarn add @babel/plugin-proposal-class-properties --dev