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

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

import unzipFromStream from '../zip/unzipFromStream.js';
import convertInputToNodeStream from './convertInputToNodeStream.js';
import convertValuesFromUint8ArraysToStrings from './convertValuesFromUint8ArraysToStrings.js';
import filterZipArchiveEntry from './filterZipArchiveEntry.js';

/**
 * Unpacks `*.xlsx` file contents.
 * An `.xlsx` file is really just a `.zip` archive with `.xml` files inside.
 * @param  {(string|Stream|Buffer|Blob)} input
 * @return {Promise<Record<string,string>} Resolves to an object holding `*.xlsx` file entries.
 */
export default function unpackXlsxFile(input) {
  var stream = convertInputToNodeStream(input);
  return unzipFromStream(stream, {
    filter: filterZipArchiveEntry
  }).then(convertValuesFromUint8ArraysToStrings);
}
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