classExtendArrayextendsArray{constructor(...args){super(...args);Object.setPrototypeOf(this,ExtendArray.prototype);}}PS:在此基础上补上上面的泛型会更完美

classExtendArrayextendsArray{constructor(...args){super(...args);Object.setPrototypeOf(this,ExtendArray.prototype);}}PS:在此基础上补上上面的泛型会更完美