method TaskClass.perform Private TaskClass.perform<T, E>(task: TaskClass<T, E>): TaskClass<T, E> Data-first twin of TaskClass#perform — start now, hand the same task back. const started = Task.perform(Task(() => 'now')); // running already await started; // 'now' Type Parameters T E Parameters task: TaskClass<T, E> Return Type TaskClass<T, E>