const wikimediaTestingUtils = require( '@wikimedia/mw-node-qunit' ); const fn = () => {}; global.CSS = { escape: ( str ) => str }; global.OO = { inheritClass: ( ClassNameObject ) => { ClassNameObject.super = fn; ClassNameObject.prototype.on = fn; }, initClass: fn, EventEmitter: fn }; wikimediaTestingUtils.setUp( /* disable QUnit sandboxing feature */ false );