@rpldy/chunked-sender/lib/esm/utils.js

adds chunked upload capabilities on top of the regular XHR uploads

import { merge, hasWindow } from "@rpldy/shared";
import { DEFAULT_OPTIONS } from "./defaults";
const getMandatoryOptions = options => merge({}, DEFAULT_OPTIONS, options);
let sliceMethod = null;
const isChunkingSupported = () => {
  sliceMethod = null;
  if (hasWindow() && "Blob" in window) {
    sliceMethod = Blob.prototype.slice || Blob.prototype.webkitSlice || Blob.prototype.mozSlice;
  }
  return !!sliceMethod;
};
const CHUNKING_SUPPORT = isChunkingSupported();
const getChunkDataFromFile = (file, start, end) => {
  const blob = sliceMethod?.call(file, start, end, file.type);
  if (blob) {
    blob.name = file.name;
    blob.lastModified = file.lastModified;
  }
  return blob;
};
export { CHUNKING_SUPPORT, getMandatoryOptions, getChunkDataFromFile, isChunkingSupported };