method StreamClass.prototype.run Private StreamClass.prototype.run(): Task<void, E> Forces the stream for its side effects alone — Elixir's Stream.run/1. Fail-fast like StreamClass#forEach: pair with StreamClass#tap for the effects. const seen: number[] = []; await Stream.from([1, 2]).tap((n) => void seen.push(n)).run(); seen; // [1, 2] Return Type Task<void, E>