How to use the @webassemblyjs/utf8.decode function in @webassemblyjs/utf8

function readUTF8String(): DecodedUTF8String {
    const lenu32 = readU32();

    // Don't eat any bytes. Instead, peek ahead of the current offset using
    // readBytesAtOffset below. This keeps readUTF8String neutral with respect
    // to the current offset, just like the other readX functions.

    const strlen = lenu32.value;

    dump([strlen], "string length");

    const bytes = readBytesAtOffset(offset + lenu32.nextIndex, strlen);

    const value = utf8.decode(bytes);

    return {
      value,
      nextIndex: strlen + lenu32.nextIndex
    };
  }

function readUTF8String() {
    var lenu32 = readU32(); // Don't eat any bytes. Instead, peek ahead of the current offset using
    // readBytesAtOffset below. This keeps readUTF8String neutral with respect
    // to the current offset, just like the other readX functions.

    var strlen = lenu32.value;
    dump([strlen], "string length");
    var bytes = readBytesAtOffset(offset + lenu32.nextIndex, strlen);
    var value = utf8.decode(bytes);
    return {
      value: value,
      nextIndex: strlen + lenu32.nextIndex
    };
  }
  /**

function readUTF8String() {
    var lenu32 = readU32(); // Don't eat any bytes. Instead, peek ahead of the current offset using
    // readBytesAtOffset below. This keeps readUTF8String neutral with respect
    // to the current offset, just like the other readX functions.

    var strlen = lenu32.value;
    dump([strlen], "string length");
    var bytes = readBytesAtOffset(offset + lenu32.nextIndex, strlen);
    var value = utf8.decode(bytes);
    return {
      value: value,
      nextIndex: strlen + lenu32.nextIndex
    };
  }
  /**

function readUTF8String() {
    var lenu32 = readU32(); // Don't eat any bytes. Instead, peek ahead of the current offset using
    // readBytesAtOffset below. This keeps readUTF8String neutral with respect
    // to the current offset, just like the other readX functions.

    var strlen = lenu32.value;
    dump([strlen], "string length");
    var bytes = readBytesAtOffset(offset + lenu32.nextIndex, strlen);
    var value = utf8.decode(bytes);
    return {
      value: value,
      nextIndex: strlen + lenu32.nextIndex
    };
  }
  /**