text: 'use strict';
  
  // Note: we can't get significant speed boost here.
  // So write code to minimize size - no pregenerated tables
  // and array tools dependencies.
  
  // (C) 1995-2013 Jean-loup Gailly and Mark Adler
  // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
  //
  // This software is provided 'as-is', without any express or implied
  // warranty. In no event will the authors be held liable for any damages
  // arising from the use of this software.
  //
  // Permission is granted to anyone to use this software for any purpose,
  // including commercial applications, and to alter it and redistribute it
  // freely, subject to the following restrictions:
  //
  // 1. The origin of this software must not be misrepresented; you must not
  //   claim that you wrote the original software. If you use this software
  //   in a product, an acknowledgment in the product documentation would be
  //   appreciated but is not required.
  // 2. Altered source versions must be plainly marked as such, and must not be
  //   misrepresented as being the original software.
  // 3. This notice may not be removed or altered from any source distribution.
  
  // Use ordinary array, since untyped makes no boost here
  const makeTable = () => {
    let c, table = [];
  
    for (var n = 0; n < 256; n++) {
      c = n;
      for (var k = 0; k < 8; k++) {
        c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
      }
      table[n] = c;
    }
  
    return table;
  };
  
  // Create table on load. Just 255 signed longs. Not a problem.
  const crcTable = new Uint32Array(makeTable());
  
  
  const crc32 = (crc, buf, len, pos) => {
    const t = crcTable;
    const end = pos + len;
  
    crc ^= -1;
  
    for (let i = pos; i < end; i++) {
      crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
    }
  
    return (crc ^ (-1)); // >>> 0;
  };
  
  
  export default crc32;
  