read-excel-file/modules/export/readSheetWebWorker.js

Read `.xlsx` files in a web browser or in Node.js

// Unzipper is multi-threaded and it spawns a separate worker for each individual file
// inside the archive that is large-enough to justify spawning a worker.
// Because it uses its own `Worker` implementation, it won't use `createWorkerFunction()`.
//
// XML parser is itself single-threaded but it could spawn a separate worker for each
// individual `.xml` file that is large-enough to justify spawning a worker.
// So it could use `createWorkerFunction()`.
//
import createWorkerFunction from 'worker-f/browser';
import parseXml from '../xml/parseXml.js';
import unpackXlsxFile from './unpackXlsxFileBrowser.js';
import parseSheet from './parseSheet.js';

/**
 * Reads a single sheet from an `.xlsx` file.
 * @param  {(File|Blob|ArrayBuffer)} input
 * @param  {(number|string)} [sheet] — Sheet number or sheet name
 * @param  {object} [options]
 * @return {Promise<SheetData>}
 */
export default function readSheet(input, sheet, options) {
  // `sheet` argument is optional.
  // It could be omitted while `options` argument is passed.
  if (!options && sheet && typeof sheet !== 'number' && typeof sheet !== 'string') {
    options = sheet;
    sheet = undefined;
  }
  return unpackXlsxFile(input).then(function (contents) {
    return parseSheet(createWorkerFunction, parseXml, contents, sheet, options);
  });
}
//# sourceMappingURL=readSheetWebWorker.js.map