resize.image.js

/**************************************************************************
 * resize image in file
**************************************************************************/
import * as Comlink from "./node_modules/comlink/dist/esm/comlink.min.mjs"

export default async function(file,max)
{
  let canvas = document.createElement('canvas');

  let offscreencanvas = canvas.transferControlToOffscreen();
  let worker = new Worker("worker.js");

  const resize = Comlink.wrap(worker);

  file = await resize( file, Comlink.transfer(offscreencanvas,[offscreencanvas]), max);

  // cleanup
  canvas.remove();
  worker.terminate();

  return file;
}