JSFiddle - React, Tailwind, and code Playground

JavaScript

const stream = new ReadableStream({
  pull: c => {
    const v = new Uint8Array(c.byobRequest.view.buffer, 0, 3);
    v.set([20, 21, 22]);
    c.byobRequest.respondWithNewView(v);
  },
  autoAllocateChunkSize: 10,
  type: 'bytes'
});

const reader = stream.getReader();
const view = reader.read().then(console.log.bind(console))