const _Object = Object export default function inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError( 'Super expression must either be null or a function, not ' + typeof superClass, ) } subClass.prototype = _Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true, }, }) if (superClass) { _Object.setPrototypeOf ? _Object.setPrototypeOf(subClass, superClass) : (subClass.__proto__ = superClass) } }