code: function copyElements(src, dst, dstNdx, offset) {
    offset = offset || 0;
    const length = src.length;
    for (let ii = 0; ii < length; ++ii) {
      dst[dstNdx + ii] = src[ii] + offset;
    }
  }
docs: Copy elements from one array to another
  
  @param {Array|TypedArray} src source array
  @param {Array|TypedArray} dst dest array
  @param {number} dstNdx index in dest to copy src
  @param {number} [offset] offset to add to copied values
  @private