wxj-tools/cutFile/worker.js

import { createChunk } from "./createChunk";
self.onmessage = async (e) => {
  const { file, chunkSize, startChunkIndex, endChunkIndex } = e.data;
  const proms = [];
  for(let i = startChunkIndex; i < endChunkIndex; i++){
    proms.push(createChunk(file, chunkSize, i));
  }
  const chunk = await Promise.all(proms);
  postMessage(chunk);
};