All files / lib/internal buffer.js

100% Statements 1084/1084
96.39% Branches 320/332
100% Functions 77/77
100% Lines 1084/1084

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 108532x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 5228x 5228x 5228x 5228x 5228x 32x 5167x 5167x 44x 44x 44x 16x 6x 14x 10x 10x 10x 44x 28x 28x 44x 44x 5123x 5167x 32x 520x 520x 240x 240x 240x 280x 280x 520x 262x 520x 520x 520x 520x 32x 32x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 32x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 32x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 32x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 32x 107x 107x 107x 101x 107x 85x 107x 70x 106x 55x 105x 42x 105x 27x 103x 13x 13x 107x 32x 16x 16x 16x 16x 16x 16x 3x 3x 3x 3x 3x 3x 16x 32x 15x 15x 15x 15x 15x 15x 2x 2x 2x 2x 2x 2x 15x 32x 35x 35x 35x 35x 35x 35x 7x 7x 7x 7x 7x 35x 32x 15x 15x 15x 15x 15x 15x 2x 2x 15x 32x 38x 38x 38x 38x 38x 38x 9x 9x 38x 32x 50x 50x 50x 50x 50x 9x 9x 50x 32x 516x 516x 516x 510x 516x 88x 110x 73x 109x 55x 105x 42x 105x 27x 103x 13x 13x 516x 32x 422x 422x 422x 422x 422x 422x 409x 409x 409x 409x 409x 409x 422x 32x 15x 15x 15x 15x 15x 15x 2x 2x 2x 2x 2x 2x 15x 32x 607x 607x 607x 607x 607x 607x 579x 579x 579x 579x 579x 607x 32x 18x 18x 18x 18x 18x 18x 5x 5x 18x 32x 2162x 2162x 2162x 2162x 2162x 2162x 2133x 2133x 2162x 32x 112x 112x 112x 106x 112x 90x 112x 73x 109x 55x 105x 42x 105x 29x 105x 13x 13x 112x 32x 16x 16x 16x 16x 16x 16x 3x 3x 3x 3x 3x 3x 3x 16x 32x 17x 17x 17x 17x 17x 17x 4x 4x 4x 4x 4x 4x 17x 32x 37x 37x 37x 37x 37x 37x 9x 9x 9x 9x 9x 37x 32x 18x 18x 18x 18x 18x 18x 5x 5x 5x 18x 32x 39x 39x 39x 39x 39x 39x 11x 11x 11x 39x 32x 56x 56x 56x 56x 56x 13x 13x 56x 32x 114x 114x 114x 108x 114x 92x 114x 75x 111x 55x 105x 42x 105x 29x 105x 13x 13x 114x 32x 16x 16x 16x 16x 16x 16x 3x 3x 3x 3x 3x 3x 3x 16x 32x 17x 17x 17x 17x 17x 17x 4x 4x 4x 4x 4x 4x 17x 32x 37x 37x 37x 37x 37x 37x 9x 9x 9x 9x 9x 37x 32x 20x 20x 20x 20x 20x 20x 7x 7x 7x 20x 32x 39x 39x 39x 39x 39x 39x 11x 11x 11x 39x 32x 32x 31x 31x 31x 31x 31x 31x 14x 14x 14x 14x 14x 14x 31x 32x 34x 34x 34x 34x 34x 34x 16x 16x 16x 16x 16x 16x 34x 32x 35x 35x 35x 35x 35x 35x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 35x 32x 37x 37x 37x 37x 37x 37x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 37x 32x 32x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 32x 3x 3x 3x 32x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 32x 3x 3x 3x 32x 5x 5x 5x 5x 32x 5x 5x 5x 5x 32x 100x 100x 100x 85x 100x 70x 99x 55x 98x 41x 98x 27x 98x 13x 13x 100x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 32x 70x 70x 70x 70x 70x 70x 70x 70x 70x 70x 70x 70x 70x 32x 19x 19x 19x 32x 35x 35x 35x 35x 35x 35x 35x 35x 35x 35x 35x 32x 73x 73x 73x 73x 73x 73x 73x 73x 32x 22x 22x 22x 32x 416x 416x 416x 416x 416x 8x 8x 358x 416x 330x 330x 330x 416x 32x 335x 335x 335x 32x 104x 104x 104x 89x 104x 74x 103x 56x 102x 42x 99x 27x 98x 13x 13x 104x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 34x 32x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 2476x 32x 199x 199x 199x 32x 2264x 2264x 2264x 2264x 2264x 2264x 2264x 2264x 2264x 2264x 2264x 32x 101x 101x 101x 101x 101x 101x 101x 101x 32x 49x 49x 49x 32x 117x 117x 117x 100x 117x 81x 114x 61x 110x 45x 110x 29x 110x 13x 13x 117x 32x 21x 21x 21x 32x 21x 21x 21x 32x 21x 21x 21x 32x 4569x 4569x 4569x 4552x 4569x 4533x 4566x 2287x 2336x 45x 110x 29x 110x 13x 13x 4569x 32x 21x 21x 21x 32x 21x 21x 21x 32x 32x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 27x 32x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 32x 30x 30x 30x 30x 30x 30x 30x 30x 30x 30x 30x 32x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 24x 32x 32x 32x 32x 32x 32x 616980x 616980x 32x 32x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 565x 32x 32x 32x 4290x 4290x 4290x 4285x 4290x 32x 32x 32x 32x 32x 32x 38071x 38071x 38071x 38071x 38071x 38071x 38071x 38071x 32x 32x 32x 32x 32x 4830x 4830x 4830x 32x 32x 32x 32x 32x 32x 32x 32x 32x 32x  
'use strict';
 
const {
  BigInt,
  Float32Array,
  Float64Array,
  MathFloor,
  Number,
  Uint8Array,
} = primordials;
 
const {
  ERR_BUFFER_OUT_OF_BOUNDS,
  ERR_INVALID_ARG_TYPE,
  ERR_OUT_OF_RANGE
} = require('internal/errors').codes;
const { validateNumber } = require('internal/validators');
const {
  asciiSlice,
  base64Slice,
  base64urlSlice,
  latin1Slice,
  hexSlice,
  ucs2Slice,
  utf8Slice,
  asciiWrite,
  base64Write,
  base64urlWrite,
  latin1Write,
  hexWrite,
  ucs2Write,
  utf8Write,
  getZeroFillToggle
} = internalBinding('buffer');
const {
  untransferable_object_private_symbol,
  setHiddenValue,
} = internalBinding('util');
 
// Temporary buffers to convert numbers.
const float32Array = new Float32Array(1);
const uInt8Float32Array = new Uint8Array(float32Array.buffer);
const float64Array = new Float64Array(1);
const uInt8Float64Array = new Uint8Array(float64Array.buffer);
 
// Check endianness.
float32Array[0] = -1; // 0xBF800000
// Either it is [0, 0, 128, 191] or [191, 128, 0, 0]. It is not possible to
// check this with `os.endianness()` because that is determined at compile time.
const bigEndian = uInt8Float32Array[3] === 0;
 
function checkBounds(buf, offset, byteLength) {
  validateNumber(offset, 'offset');
  if (buf[offset] === undefined || buf[offset + byteLength] === undefined)
    boundsError(offset, buf.length - (byteLength + 1));
}
 
function checkInt(value, min, max, buf, offset, byteLength) {
  if (value > max || value < min) {
    const n = typeof min === 'bigint' ? 'n' : '';
    let range;
    if (byteLength > 3) {
      if (min === 0 || min === 0n) {
        range = `>= 0${n} and < 2${n} ** ${(byteLength + 1) * 8}${n}`;
      } else {
        range = `>= -(2${n} ** ${(byteLength + 1) * 8 - 1}${n}) and ` +
                `< 2${n} ** ${(byteLength + 1) * 8 - 1}${n}`;
      }
    } else {
      range = `>= ${min}${n} and <= ${max}${n}`;
    }
    throw new ERR_OUT_OF_RANGE('value', range, value);
  }
  checkBounds(buf, offset, byteLength);
}
 
function boundsError(value, length, type) {
  if (MathFloor(value) !== value) {
    validateNumber(value, type);
    throw new ERR_OUT_OF_RANGE(type || 'offset', 'an integer', value);
  }
 
  if (length < 0)
    throw new ERR_BUFFER_OUT_OF_BOUNDS();
 
  throw new ERR_OUT_OF_RANGE(type || 'offset',
                             `>= ${type ? 1 : 0} and <= ${length}`,
                             value);
}
 
// Read integers.
function readBigUInt64LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);
 
  const lo = first +
    this[++offset] * 2 ** 8 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 24;
 
  const hi = this[++offset] +
    this[++offset] * 2 ** 8 +
    this[++offset] * 2 ** 16 +
    last * 2 ** 24;
 
  return BigInt(lo) + (BigInt(hi) << 32n);
}
 
function readBigUInt64BE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);
 
  const hi = first * 2 ** 24 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 8 +
    this[++offset];
 
  const lo = this[++offset] * 2 ** 24 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 8 +
    last;
 
  return (BigInt(hi) << 32n) + BigInt(lo);
}
 
function readBigInt64LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);
 
  const val = this[offset + 4] +
    this[offset + 5] * 2 ** 8 +
    this[offset + 6] * 2 ** 16 +
    (last << 24); // Overflow
  return (BigInt(val) << 32n) +
    BigInt(first +
    this[++offset] * 2 ** 8 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 24);
}
 
function readBigInt64BE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);
 
  const val = (first << 24) + // Overflow
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 8 +
    this[++offset];
  return (BigInt(val) << 32n) +
    BigInt(this[++offset] * 2 ** 24 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 8 +
    last);
}
 
function readUIntLE(offset, byteLength) {
  if (offset === undefined)
    throw new ERR_INVALID_ARG_TYPE('offset', 'number', offset);
  if (byteLength === 6)
    return readUInt48LE(this, offset);
  if (byteLength === 5)
    return readUInt40LE(this, offset);
  if (byteLength === 3)
    return readUInt24LE(this, offset);
  if (byteLength === 4)
    return this.readUInt32LE(offset);
  if (byteLength === 2)
    return this.readUInt16LE(offset);
  if (byteLength === 1)
    return this.readUInt8(offset);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function readUInt48LE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 5];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 6);
 
  return first +
    buf[++offset] * 2 ** 8 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 24 +
    (buf[++offset] + last * 2 ** 8) * 2 ** 32;
}
 
function readUInt40LE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 4];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 5);
 
  return first +
    buf[++offset] * 2 ** 8 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 24 +
    last * 2 ** 32;
}
 
function readUInt32LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 3];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 4);
 
  return first +
    this[++offset] * 2 ** 8 +
    this[++offset] * 2 ** 16 +
    last * 2 ** 24;
}
 
function readUInt24LE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 2];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 3);
 
  return first + buf[++offset] * 2 ** 8 + last * 2 ** 16;
}
 
function readUInt16LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 1];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 2);
 
  return first + last * 2 ** 8;
}
 
function readUInt8(offset = 0) {
  validateNumber(offset, 'offset');
  const val = this[offset];
  if (val === undefined)
    boundsError(offset, this.length - 1);
 
  return val;
}
 
function readUIntBE(offset, byteLength) {
  if (offset === undefined)
    throw new ERR_INVALID_ARG_TYPE('offset', 'number', offset);
  if (byteLength === 6)
    return readUInt48BE(this, offset);
  if (byteLength === 5)
    return readUInt40BE(this, offset);
  if (byteLength === 3)
    return readUInt24BE(this, offset);
  if (byteLength === 4)
    return this.readUInt32BE(offset);
  if (byteLength === 2)
    return this.readUInt16BE(offset);
  if (byteLength === 1)
    return this.readUInt8(offset);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function readUInt48BE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 5];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 6);
 
  return (first * 2 ** 8 + buf[++offset]) * 2 ** 32 +
    buf[++offset] * 2 ** 24 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 8 +
    last;
}
 
function readUInt40BE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 4];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 5);
 
  return first * 2 ** 32 +
    buf[++offset] * 2 ** 24 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 8 +
    last;
}
 
function readUInt32BE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 3];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 4);
 
  return first * 2 ** 24 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 8 +
    last;
}
 
function readUInt24BE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 2];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 3);
 
  return first * 2 ** 16 + buf[++offset] * 2 ** 8 + last;
}
 
function readUInt16BE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 1];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 2);
 
  return first * 2 ** 8 + last;
}
 
function readIntLE(offset, byteLength) {
  if (offset === undefined)
    throw new ERR_INVALID_ARG_TYPE('offset', 'number', offset);
  if (byteLength === 6)
    return readInt48LE(this, offset);
  if (byteLength === 5)
    return readInt40LE(this, offset);
  if (byteLength === 3)
    return readInt24LE(this, offset);
  if (byteLength === 4)
    return this.readInt32LE(offset);
  if (byteLength === 2)
    return this.readInt16LE(offset);
  if (byteLength === 1)
    return this.readInt8(offset);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function readInt48LE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 5];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 6);
 
  const val = buf[offset + 4] + last * 2 ** 8;
  return (val | (val & 2 ** 15) * 0x1fffe) * 2 ** 32 +
    first +
    buf[++offset] * 2 ** 8 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 24;
}
 
function readInt40LE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 4];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 5);
 
  return (last | (last & 2 ** 7) * 0x1fffffe) * 2 ** 32 +
    first +
    buf[++offset] * 2 ** 8 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 24;
}
 
function readInt32LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 3];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 4);
 
  return first +
    this[++offset] * 2 ** 8 +
    this[++offset] * 2 ** 16 +
    (last << 24); // Overflow
}
 
function readInt24LE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 2];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 3);
 
  const val = first + buf[++offset] * 2 ** 8 + last * 2 ** 16;
  return val | (val & 2 ** 23) * 0x1fe;
}
 
function readInt16LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 1];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 2);
 
  const val = first + last * 2 ** 8;
  return val | (val & 2 ** 15) * 0x1fffe;
}
 
function readInt8(offset = 0) {
  validateNumber(offset, 'offset');
  const val = this[offset];
  if (val === undefined)
    boundsError(offset, this.length - 1);
 
  return val | (val & 2 ** 7) * 0x1fffffe;
}
 
function readIntBE(offset, byteLength) {
  if (offset === undefined)
    throw new ERR_INVALID_ARG_TYPE('offset', 'number', offset);
  if (byteLength === 6)
    return readInt48BE(this, offset);
  if (byteLength === 5)
    return readInt40BE(this, offset);
  if (byteLength === 3)
    return readInt24BE(this, offset);
  if (byteLength === 4)
    return this.readInt32BE(offset);
  if (byteLength === 2)
    return this.readInt16BE(offset);
  if (byteLength === 1)
    return this.readInt8(offset);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function readInt48BE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 5];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 6);
 
  const val = buf[++offset] + first * 2 ** 8;
  return (val | (val & 2 ** 15) * 0x1fffe) * 2 ** 32 +
    buf[++offset] * 2 ** 24 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 8 +
    last;
}
 
function readInt40BE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 4];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 5);
 
  return (first | (first & 2 ** 7) * 0x1fffffe) * 2 ** 32 +
    buf[++offset] * 2 ** 24 +
    buf[++offset] * 2 ** 16 +
    buf[++offset] * 2 ** 8 +
    last;
}
 
function readInt32BE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 3];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 4);
 
  return (first << 24) + // Overflow
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 8 +
    last;
}
 
function readInt24BE(buf, offset = 0) {
  validateNumber(offset, 'offset');
  const first = buf[offset];
  const last = buf[offset + 2];
  if (first === undefined || last === undefined)
    boundsError(offset, buf.length - 3);
 
  const val = first * 2 ** 16 + buf[++offset] * 2 ** 8 + last;
  return val | (val & 2 ** 23) * 0x1fe;
}
 
function readInt16BE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 1];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 2);
 
  const val = first * 2 ** 8 + last;
  return val | (val & 2 ** 15) * 0x1fffe;
}
 
// Read floats
function readFloatBackwards(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 3];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 4);
 
  uInt8Float32Array[3] = first;
  uInt8Float32Array[2] = this[++offset];
  uInt8Float32Array[1] = this[++offset];
  uInt8Float32Array[0] = last;
  return float32Array[0];
}
 
function readFloatForwards(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 3];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 4);
 
  uInt8Float32Array[0] = first;
  uInt8Float32Array[1] = this[++offset];
  uInt8Float32Array[2] = this[++offset];
  uInt8Float32Array[3] = last;
  return float32Array[0];
}
 
function readDoubleBackwards(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);
 
  uInt8Float64Array[7] = first;
  uInt8Float64Array[6] = this[++offset];
  uInt8Float64Array[5] = this[++offset];
  uInt8Float64Array[4] = this[++offset];
  uInt8Float64Array[3] = this[++offset];
  uInt8Float64Array[2] = this[++offset];
  uInt8Float64Array[1] = this[++offset];
  uInt8Float64Array[0] = last;
  return float64Array[0];
}
 
function readDoubleForwards(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);
 
  uInt8Float64Array[0] = first;
  uInt8Float64Array[1] = this[++offset];
  uInt8Float64Array[2] = this[++offset];
  uInt8Float64Array[3] = this[++offset];
  uInt8Float64Array[4] = this[++offset];
  uInt8Float64Array[5] = this[++offset];
  uInt8Float64Array[6] = this[++offset];
  uInt8Float64Array[7] = last;
  return float64Array[0];
}
 
// Write integers.
function writeBigU_Int64LE(buf, value, offset, min, max) {
  checkInt(value, min, max, buf, offset, 7);
 
  let lo = Number(value & 0xffffffffn);
  buf[offset++] = lo;
  lo = lo >> 8;
  buf[offset++] = lo;
  lo = lo >> 8;
  buf[offset++] = lo;
  lo = lo >> 8;
  buf[offset++] = lo;
  let hi = Number(value >> 32n & 0xffffffffn);
  buf[offset++] = hi;
  hi = hi >> 8;
  buf[offset++] = hi;
  hi = hi >> 8;
  buf[offset++] = hi;
  hi = hi >> 8;
  buf[offset++] = hi;
  return offset;
}
 
function writeBigUInt64LE(value, offset = 0) {
  return writeBigU_Int64LE(this, value, offset, 0n, 0xffffffffffffffffn);
}
 
function writeBigU_Int64BE(buf, value, offset, min, max) {
  checkInt(value, min, max, buf, offset, 7);
 
  let lo = Number(value & 0xffffffffn);
  buf[offset + 7] = lo;
  lo = lo >> 8;
  buf[offset + 6] = lo;
  lo = lo >> 8;
  buf[offset + 5] = lo;
  lo = lo >> 8;
  buf[offset + 4] = lo;
  let hi = Number(value >> 32n & 0xffffffffn);
  buf[offset + 3] = hi;
  hi = hi >> 8;
  buf[offset + 2] = hi;
  hi = hi >> 8;
  buf[offset + 1] = hi;
  hi = hi >> 8;
  buf[offset] = hi;
  return offset + 8;
}
 
function writeBigUInt64BE(value, offset = 0) {
  return writeBigU_Int64BE(this, value, offset, 0n, 0xffffffffffffffffn);
}
 
function writeBigInt64LE(value, offset = 0) {
  return writeBigU_Int64LE(
    this, value, offset, -0x8000000000000000n, 0x7fffffffffffffffn);
}
 
function writeBigInt64BE(value, offset = 0) {
  return writeBigU_Int64BE(
    this, value, offset, -0x8000000000000000n, 0x7fffffffffffffffn);
}
 
function writeUIntLE(value, offset, byteLength) {
  if (byteLength === 6)
    return writeU_Int48LE(this, value, offset, 0, 0xffffffffffff);
  if (byteLength === 5)
    return writeU_Int40LE(this, value, offset, 0, 0xffffffffff);
  if (byteLength === 3)
    return writeU_Int24LE(this, value, offset, 0, 0xffffff);
  if (byteLength === 4)
    return writeU_Int32LE(this, value, offset, 0, 0xffffffff);
  if (byteLength === 2)
    return writeU_Int16LE(this, value, offset, 0, 0xffff);
  if (byteLength === 1)
    return writeU_Int8(this, value, offset, 0, 0xff);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function writeU_Int48LE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 5);
 
  const newVal = MathFloor(value * 2 ** -32);
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  buf[offset++] = newVal;
  buf[offset++] = (newVal >>> 8);
  return offset;
}
 
function writeU_Int40LE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 4);
 
  const newVal = value;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  buf[offset++] = MathFloor(newVal * 2 ** -32);
  return offset;
}
 
function writeU_Int32LE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 3);
 
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  return offset;
}
 
function writeUInt32LE(value, offset = 0) {
  return writeU_Int32LE(this, value, offset, 0, 0xffffffff);
}
 
function writeU_Int24LE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 2);
 
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  value = value >>> 8;
  buf[offset++] = value;
  return offset;
}
 
function writeU_Int16LE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 1);
 
  buf[offset++] = value;
  buf[offset++] = (value >>> 8);
  return offset;
}
 
function writeUInt16LE(value, offset = 0) {
  return writeU_Int16LE(this, value, offset, 0, 0xffff);
}
 
function writeU_Int8(buf, value, offset, min, max) {
  value = +value;
  // `checkInt()` can not be used here because it checks two entries.
  validateNumber(offset, 'offset');
  if (value > max || value < min) {
    throw new ERR_OUT_OF_RANGE('value', `>= ${min} and <= ${max}`, value);
  }
  if (buf[offset] === undefined)
    boundsError(offset, buf.length - 1);
 
  buf[offset] = value;
  return offset + 1;
}
 
function writeUInt8(value, offset = 0) {
  return writeU_Int8(this, value, offset, 0, 0xff);
}
 
function writeUIntBE(value, offset, byteLength) {
  if (byteLength === 6)
    return writeU_Int48BE(this, value, offset, 0, 0xffffffffffff);
  if (byteLength === 5)
    return writeU_Int40BE(this, value, offset, 0, 0xffffffffff);
  if (byteLength === 3)
    return writeU_Int24BE(this, value, offset, 0, 0xffffff);
  if (byteLength === 4)
    return writeU_Int32BE(this, value, offset, 0, 0xffffffff);
  if (byteLength === 2)
    return writeU_Int16BE(this, value, offset, 0, 0xffff);
  if (byteLength === 1)
    return writeU_Int8(this, value, offset, 0, 0xff);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function writeU_Int48BE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 5);
 
  const newVal = MathFloor(value * 2 ** -32);
  buf[offset++] = (newVal >>> 8);
  buf[offset++] = newVal;
  buf[offset + 3] = value;
  value = value >>> 8;
  buf[offset + 2] = value;
  value = value >>> 8;
  buf[offset + 1] = value;
  value = value >>> 8;
  buf[offset] = value;
  return offset + 4;
}
 
function writeU_Int40BE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 4);
 
  buf[offset++] = MathFloor(value * 2 ** -32);
  buf[offset + 3] = value;
  value = value >>> 8;
  buf[offset + 2] = value;
  value = value >>> 8;
  buf[offset + 1] = value;
  value = value >>> 8;
  buf[offset] = value;
  return offset + 4;
}
 
function writeU_Int32BE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 3);
 
  buf[offset + 3] = value;
  value = value >>> 8;
  buf[offset + 2] = value;
  value = value >>> 8;
  buf[offset + 1] = value;
  value = value >>> 8;
  buf[offset] = value;
  return offset + 4;
}
 
function writeUInt32BE(value, offset = 0) {
  return writeU_Int32BE(this, value, offset, 0, 0xffffffff);
}
 
function writeU_Int24BE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 2);
 
  buf[offset + 2] = value;
  value = value >>> 8;
  buf[offset + 1] = value;
  value = value >>> 8;
  buf[offset] = value;
  return offset + 3;
}
 
function writeU_Int16BE(buf, value, offset, min, max) {
  value = +value;
  checkInt(value, min, max, buf, offset, 1);
 
  buf[offset++] = (value >>> 8);
  buf[offset++] = value;
  return offset;
}
 
function writeUInt16BE(value, offset = 0) {
  return writeU_Int16BE(this, value, offset, 0, 0xffff);
}
 
function writeIntLE(value, offset, byteLength) {
  if (byteLength === 6)
    return writeU_Int48LE(this, value, offset, -0x800000000000, 0x7fffffffffff);
  if (byteLength === 5)
    return writeU_Int40LE(this, value, offset, -0x8000000000, 0x7fffffffff);
  if (byteLength === 3)
    return writeU_Int24LE(this, value, offset, -0x800000, 0x7fffff);
  if (byteLength === 4)
    return writeU_Int32LE(this, value, offset, -0x80000000, 0x7fffffff);
  if (byteLength === 2)
    return writeU_Int16LE(this, value, offset, -0x8000, 0x7fff);
  if (byteLength === 1)
    return writeU_Int8(this, value, offset, -0x80, 0x7f);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function writeInt32LE(value, offset = 0) {
  return writeU_Int32LE(this, value, offset, -0x80000000, 0x7fffffff);
}
 
function writeInt16LE(value, offset = 0) {
  return writeU_Int16LE(this, value, offset, -0x8000, 0x7fff);
}
 
function writeInt8(value, offset = 0) {
  return writeU_Int8(this, value, offset, -0x80, 0x7f);
}
 
function writeIntBE(value, offset, byteLength) {
  if (byteLength === 6)
    return writeU_Int48BE(this, value, offset, -0x800000000000, 0x7fffffffffff);
  if (byteLength === 5)
    return writeU_Int40BE(this, value, offset, -0x8000000000, 0x7fffffffff);
  if (byteLength === 3)
    return writeU_Int24BE(this, value, offset, -0x800000, 0x7fffff);
  if (byteLength === 4)
    return writeU_Int32BE(this, value, offset, -0x80000000, 0x7fffffff);
  if (byteLength === 2)
    return writeU_Int16BE(this, value, offset, -0x8000, 0x7fff);
  if (byteLength === 1)
    return writeU_Int8(this, value, offset, -0x80, 0x7f);
 
  boundsError(byteLength, 6, 'byteLength');
}
 
function writeInt32BE(value, offset = 0) {
  return writeU_Int32BE(this, value, offset, -0x80000000, 0x7fffffff);
}
 
function writeInt16BE(value, offset = 0) {
  return writeU_Int16BE(this, value, offset, -0x8000, 0x7fff);
}
 
// Write floats.
function writeDoubleForwards(val, offset = 0) {
  val = +val;
  checkBounds(this, offset, 7);
 
  float64Array[0] = val;
  this[offset++] = uInt8Float64Array[0];
  this[offset++] = uInt8Float64Array[1];
  this[offset++] = uInt8Float64Array[2];
  this[offset++] = uInt8Float64Array[3];
  this[offset++] = uInt8Float64Array[4];
  this[offset++] = uInt8Float64Array[5];
  this[offset++] = uInt8Float64Array[6];
  this[offset++] = uInt8Float64Array[7];
  return offset;
}
 
function writeDoubleBackwards(val, offset = 0) {
  val = +val;
  checkBounds(this, offset, 7);
 
  float64Array[0] = val;
  this[offset++] = uInt8Float64Array[7];
  this[offset++] = uInt8Float64Array[6];
  this[offset++] = uInt8Float64Array[5];
  this[offset++] = uInt8Float64Array[4];
  this[offset++] = uInt8Float64Array[3];
  this[offset++] = uInt8Float64Array[2];
  this[offset++] = uInt8Float64Array[1];
  this[offset++] = uInt8Float64Array[0];
  return offset;
}
 
function writeFloatForwards(val, offset = 0) {
  val = +val;
  checkBounds(this, offset, 3);
 
  float32Array[0] = val;
  this[offset++] = uInt8Float32Array[0];
  this[offset++] = uInt8Float32Array[1];
  this[offset++] = uInt8Float32Array[2];
  this[offset++] = uInt8Float32Array[3];
  return offset;
}
 
function writeFloatBackwards(val, offset = 0) {
  val = +val;
  checkBounds(this, offset, 3);
 
  float32Array[0] = val;
  this[offset++] = uInt8Float32Array[3];
  this[offset++] = uInt8Float32Array[2];
  this[offset++] = uInt8Float32Array[1];
  this[offset++] = uInt8Float32Array[0];
  return offset;
}
 
class FastBuffer extends Uint8Array {
  // Using an explicit constructor here is necessary to avoid relying on
  // `Array.prototype[Symbol.iterator]`, which can be mutated by users.
  // eslint-disable-next-line no-useless-constructor
  constructor(bufferOrLength, byteOffset, length) {
    super(bufferOrLength, byteOffset, length);
  }
}
 
function addBufferPrototypeMethods(proto) {
  proto.readBigUInt64LE = readBigUInt64LE;
  proto.readBigUInt64BE = readBigUInt64BE;
  proto.readBigUint64LE = readBigUInt64LE;
  proto.readBigUint64BE = readBigUInt64BE;
  proto.readBigInt64LE = readBigInt64LE;
  proto.readBigInt64BE = readBigInt64BE;
  proto.writeBigUInt64LE = writeBigUInt64LE;
  proto.writeBigUInt64BE = writeBigUInt64BE;
  proto.writeBigUint64LE = writeBigUInt64LE;
  proto.writeBigUint64BE = writeBigUInt64BE;
  proto.writeBigInt64LE = writeBigInt64LE;
  proto.writeBigInt64BE = writeBigInt64BE;
 
  proto.readUIntLE = readUIntLE;
  proto.readUInt32LE = readUInt32LE;
  proto.readUInt16LE = readUInt16LE;
  proto.readUInt8 = readUInt8;
  proto.readUIntBE = readUIntBE;
  proto.readUInt32BE = readUInt32BE;
  proto.readUInt16BE = readUInt16BE;
  proto.readUintLE = readUIntLE;
  proto.readUint32LE = readUInt32LE;
  proto.readUint16LE = readUInt16LE;
  proto.readUint8 = readUInt8;
  proto.readUintBE = readUIntBE;
  proto.readUint32BE = readUInt32BE;
  proto.readUint16BE = readUInt16BE;
  proto.readIntLE = readIntLE;
  proto.readInt32LE = readInt32LE;
  proto.readInt16LE = readInt16LE;
  proto.readInt8 = readInt8;
  proto.readIntBE = readIntBE;
  proto.readInt32BE = readInt32BE;
  proto.readInt16BE = readInt16BE;
 
  proto.writeUIntLE = writeUIntLE;
  proto.writeUInt32LE = writeUInt32LE;
  proto.writeUInt16LE = writeUInt16LE;
  proto.writeUInt8 = writeUInt8;
  proto.writeUIntBE = writeUIntBE;
  proto.writeUInt32BE = writeUInt32BE;
  proto.writeUInt16BE = writeUInt16BE;
  proto.writeUintLE = writeUIntLE;
  proto.writeUint32LE = writeUInt32LE;
  proto.writeUint16LE = writeUInt16LE;
  proto.writeUint8 = writeUInt8;
  proto.writeUintBE = writeUIntBE;
  proto.writeUint32BE = writeUInt32BE;
  proto.writeUint16BE = writeUInt16BE;
  proto.writeIntLE = writeIntLE;
  proto.writeInt32LE = writeInt32LE;
  proto.writeInt16LE = writeInt16LE;
  proto.writeInt8 = writeInt8;
  proto.writeIntBE = writeIntBE;
  proto.writeInt32BE = writeInt32BE;
  proto.writeInt16BE = writeInt16BE;
 
  proto.readFloatLE = bigEndian ? readFloatBackwards : readFloatForwards;
  proto.readFloatBE = bigEndian ? readFloatForwards : readFloatBackwards;
  proto.readDoubleLE = bigEndian ? readDoubleBackwards : readDoubleForwards;
  proto.readDoubleBE = bigEndian ? readDoubleForwards : readDoubleBackwards;
  proto.writeFloatLE = bigEndian ? writeFloatBackwards : writeFloatForwards;
  proto.writeFloatBE = bigEndian ? writeFloatForwards : writeFloatBackwards;
  proto.writeDoubleLE = bigEndian ? writeDoubleBackwards : writeDoubleForwards;
  proto.writeDoubleBE = bigEndian ? writeDoubleForwards : writeDoubleBackwards;
 
  proto.asciiSlice = asciiSlice;
  proto.base64Slice = base64Slice;
  proto.base64urlSlice = base64urlSlice;
  proto.latin1Slice = latin1Slice;
  proto.hexSlice = hexSlice;
  proto.ucs2Slice = ucs2Slice;
  proto.utf8Slice = utf8Slice;
  proto.asciiWrite = asciiWrite;
  proto.base64Write = base64Write;
  proto.base64urlWrite = base64urlWrite;
  proto.latin1Write = latin1Write;
  proto.hexWrite = hexWrite;
  proto.ucs2Write = ucs2Write;
  proto.utf8Write = utf8Write;
}
 
// This would better be placed in internal/worker/io.js, but that doesn't work
// because Buffer needs this and that would introduce a cyclic dependency.
function markAsUntransferable(obj) {
  if ((typeof obj !== 'object' && typeof obj !== 'function') || obj === null)
    return;  // This object is a primitive and therefore already untransferable.
  setHiddenValue(obj, untransferable_object_private_symbol, true);
}
 
// A toggle used to access the zero fill setting of the array buffer allocator
// in C++.
// |zeroFill| can be undefined when running inside an isolate where we
// do not own the ArrayBuffer allocator.  Zero fill is always on in that case.
let zeroFill = getZeroFillToggle();
function createUnsafeBuffer(size) {
  zeroFill[0] = 0;
  try {
    return new FastBuffer(size);
  } finally {
    zeroFill[0] = 1;
  }
}
 
// The connection between the JS land zero fill toggle and the
// C++ one in the NodeArrayBufferAllocator gets lost if the toggle
// is deserialized from the snapshot, because V8 owns the underlying
// memory of this toggle. This resets the connection.
function reconnectZeroFillToggle() {
  zeroFill = getZeroFillToggle();
}
 
module.exports = {
  FastBuffer,
  addBufferPrototypeMethods,
  markAsUntransferable,
  createUnsafeBuffer,
  readUInt16BE,
  readUInt32BE,
  reconnectZeroFillToggle
};