Function slowToString

stackgl_modules/index.js:430–487

(encoding, start, end)

}
Buffer.byteLength = byteLength;
function slowToString(encoding, start, end) {
  var loweredCase = false;

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0;
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return '';
  }
  if (end === undefined || end > this.length) {
    end = this.length;
  }
  if (end <= 0) {
    return '';
  }

  // Force coercion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0;
  start >>>= 0;
  if (end <= start) {
    return '';
  }
  if (!encoding) encoding = 'utf8';
  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end);
      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end);
      case 'ascii':
        return asciiSlice(this, start, end);
      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end);
      case 'base64':
        return base64Slice(this, start, end);
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end);
      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding);
        encoding = (encoding + '').toLowerCase();
        loweredCase = true;
    }
  }
}