sflow/src/heads.ts

sflow is a powerful and highly-extensible library designed for processing and manipulating streams of data effortlessly. Inspired by the functional programming paradigm, it provides a rich set of utilities for transforming streams, including chunking, fil

import { never } from "./never";
export function heads<T>(n = 1) {
  return new TransformStream<T, T>({
    transform: async (chunk, ctrl) => {
      return n-- > 0 ? ctrl.enqueue(chunk) : await never();
    },
  });
}