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Edit File: trackStream.js

export const streamChunk = function* (chunk, chunkSize) {
  let len = chunk.byteLength;

if (!chunkSize || len < chunkSize) {
    yield chunk;
    return;
  }

let pos = 0;
  let end;

while (pos < len) {
    end = pos + chunkSize;
    yield chunk.slice(pos, end);
    pos = end;
  }
}

export const readBytes = async function* (iterable, chunkSize) {
  for await (const chunk of readStream(iterable)) {
    yield* streamChunk(chunk, chunkSize);
  }
}

const readStream = async function* (stream) {
  if (stream[Symbol.asyncIterator]) {
    yield* stream;
    return;
  }

export const trackStream = (stream, chunkSize, onProgress, onFinish) => {
  const iterator = readBytes(stream, chunkSize);

let bytes = 0;
  let done;
  let _onFinish = (e) => {
    if (!done) {
      done = true;
      onFinish && onFinish(e);
    }
  }

return new ReadableStream({
    async pull(controller) {
      try {
        const {done, value} = await iterator.next();

if (done) {
         _onFinish();
          controller.close();
          return;
        }

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