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-rw-r--r--node_modules/rollup-plugin-node-polyfills/polyfills/buffer-es6.js1981
1 files changed, 1981 insertions, 0 deletions
diff --git a/node_modules/rollup-plugin-node-polyfills/polyfills/buffer-es6.js b/node_modules/rollup-plugin-node-polyfills/polyfills/buffer-es6.js
new file mode 100644
index 0000000..7118c3b
--- /dev/null
+++ b/node_modules/rollup-plugin-node-polyfills/polyfills/buffer-es6.js
@@ -0,0 +1,1981 @@
+var lookup = [];
+var revLookup = [];
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array;
+var inited = false;
+function init () {
+ inited = true;
+ var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+ for (var i = 0, len = code.length; i < len; ++i) {
+ lookup[i] = code[i];
+ revLookup[code.charCodeAt(i)] = i;
+ }
+
+ revLookup['-'.charCodeAt(0)] = 62;
+ revLookup['_'.charCodeAt(0)] = 63;
+}
+
+function toByteArray (b64) {
+ if (!inited) {
+ init();
+ }
+ var i, j, l, tmp, placeHolders, arr;
+ var len = b64.length;
+
+ if (len % 4 > 0) {
+ throw new Error('Invalid string. Length must be a multiple of 4')
+ }
+
+ // the number of equal signs (place holders)
+ // if there are two placeholders, than the two characters before it
+ // represent one byte
+ // if there is only one, then the three characters before it represent 2 bytes
+ // this is just a cheap hack to not do indexOf twice
+ placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0;
+
+ // base64 is 4/3 + up to two characters of the original data
+ arr = new Arr(len * 3 / 4 - placeHolders);
+
+ // if there are placeholders, only get up to the last complete 4 chars
+ l = placeHolders > 0 ? len - 4 : len;
+
+ var L = 0;
+
+ for (i = 0, j = 0; i < l; i += 4, j += 3) {
+ tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)];
+ arr[L++] = (tmp >> 16) & 0xFF;
+ arr[L++] = (tmp >> 8) & 0xFF;
+ arr[L++] = tmp & 0xFF;
+ }
+
+ if (placeHolders === 2) {
+ tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4);
+ arr[L++] = tmp & 0xFF;
+ } else if (placeHolders === 1) {
+ tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2);
+ arr[L++] = (tmp >> 8) & 0xFF;
+ arr[L++] = tmp & 0xFF;
+ }
+
+ return arr
+}
+
+function tripletToBase64 (num) {
+ return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+ var tmp;
+ var output = [];
+ for (var i = start; i < end; i += 3) {
+ tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]);
+ output.push(tripletToBase64(tmp));
+ }
+ return output.join('')
+}
+
+function fromByteArray (uint8) {
+ if (!inited) {
+ init();
+ }
+ var tmp;
+ var len = uint8.length;
+ var extraBytes = len % 3; // if we have 1 byte left, pad 2 bytes
+ var output = '';
+ var parts = [];
+ var maxChunkLength = 16383; // must be multiple of 3
+
+ // go through the array every three bytes, we'll deal with trailing stuff later
+ for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+ parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)));
+ }
+
+ // pad the end with zeros, but make sure to not forget the extra bytes
+ if (extraBytes === 1) {
+ tmp = uint8[len - 1];
+ output += lookup[tmp >> 2];
+ output += lookup[(tmp << 4) & 0x3F];
+ output += '==';
+ } else if (extraBytes === 2) {
+ tmp = (uint8[len - 2] << 8) + (uint8[len - 1]);
+ output += lookup[tmp >> 10];
+ output += lookup[(tmp >> 4) & 0x3F];
+ output += lookup[(tmp << 2) & 0x3F];
+ output += '=';
+ }
+
+ parts.push(output);
+
+ return parts.join('')
+}
+
+function read (buffer, offset, isLE, mLen, nBytes) {
+ var e, m;
+ var eLen = nBytes * 8 - mLen - 1;
+ var eMax = (1 << eLen) - 1;
+ var eBias = eMax >> 1;
+ var nBits = -7;
+ var i = isLE ? (nBytes - 1) : 0;
+ var d = isLE ? -1 : 1;
+ var s = buffer[offset + i];
+
+ i += d;
+
+ e = s & ((1 << (-nBits)) - 1);
+ s >>= (-nBits);
+ nBits += eLen;
+ for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+ m = e & ((1 << (-nBits)) - 1);
+ e >>= (-nBits);
+ nBits += mLen;
+ for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+ if (e === 0) {
+ e = 1 - eBias;
+ } else if (e === eMax) {
+ return m ? NaN : ((s ? -1 : 1) * Infinity)
+ } else {
+ m = m + Math.pow(2, mLen);
+ e = e - eBias;
+ }
+ return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+function write (buffer, value, offset, isLE, mLen, nBytes) {
+ var e, m, c;
+ var eLen = nBytes * 8 - mLen - 1;
+ var eMax = (1 << eLen) - 1;
+ var eBias = eMax >> 1;
+ var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0);
+ var i = isLE ? 0 : (nBytes - 1);
+ var d = isLE ? 1 : -1;
+ var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;
+
+ value = Math.abs(value);
+
+ if (isNaN(value) || value === Infinity) {
+ m = isNaN(value) ? 1 : 0;
+ e = eMax;
+ } else {
+ e = Math.floor(Math.log(value) / Math.LN2);
+ if (value * (c = Math.pow(2, -e)) < 1) {
+ e--;
+ c *= 2;
+ }
+ if (e + eBias >= 1) {
+ value += rt / c;
+ } else {
+ value += rt * Math.pow(2, 1 - eBias);
+ }
+ if (value * c >= 2) {
+ e++;
+ c /= 2;
+ }
+
+ if (e + eBias >= eMax) {
+ m = 0;
+ e = eMax;
+ } else if (e + eBias >= 1) {
+ m = (value * c - 1) * Math.pow(2, mLen);
+ e = e + eBias;
+ } else {
+ m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
+ e = 0;
+ }
+ }
+
+ for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+ e = (e << mLen) | m;
+ eLen += mLen;
+ for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+ buffer[offset + i - d] |= s * 128;
+}
+
+var toString = {}.toString;
+
+var isArray = Array.isArray || function (arr) {
+ return toString.call(arr) == '[object Array]';
+};
+
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license MIT
+ */
+
+var INSPECT_MAX_BYTES = 50;
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ * === true Use Uint8Array implementation (fastest)
+ * === false Use Object implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * Due to various browser bugs, sometimes the Object implementation will be used even
+ * when the browser supports typed arrays.
+ *
+ * Note:
+ *
+ * - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
+ * See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+ *
+ * - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+ *
+ * - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+ * incorrect length in some situations.
+
+ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
+ * get the Object implementation, which is slower but behaves correctly.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
+ ? global.TYPED_ARRAY_SUPPORT
+ : true;
+
+/*
+ * Export kMaxLength after typed array support is determined.
+ */
+var _kMaxLength = kMaxLength();
+
+function kMaxLength () {
+ return Buffer.TYPED_ARRAY_SUPPORT
+ ? 0x7fffffff
+ : 0x3fffffff
+}
+
+function createBuffer (that, length) {
+ if (kMaxLength() < length) {
+ throw new RangeError('Invalid typed array length')
+ }
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ // Return an augmented `Uint8Array` instance, for best performance
+ that = new Uint8Array(length);
+ that.__proto__ = Buffer.prototype;
+ } else {
+ // Fallback: Return an object instance of the Buffer class
+ if (that === null) {
+ that = new Buffer(length);
+ }
+ that.length = length;
+ }
+
+ return that
+}
+
+/**
+ * The Buffer constructor returns instances of `Uint8Array` that have their
+ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+ * returns a single octet.
+ *
+ * The `Uint8Array` prototype remains unmodified.
+ */
+
+function Buffer (arg, encodingOrOffset, length) {
+ if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
+ return new Buffer(arg, encodingOrOffset, length)
+ }
+
+ // Common case.
+ if (typeof arg === 'number') {
+ if (typeof encodingOrOffset === 'string') {
+ throw new Error(
+ 'If encoding is specified then the first argument must be a string'
+ )
+ }
+ return allocUnsafe(this, arg)
+ }
+ return from(this, arg, encodingOrOffset, length)
+}
+
+Buffer.poolSize = 8192; // not used by this implementation
+
+// TODO: Legacy, not needed anymore. Remove in next major version.
+Buffer._augment = function (arr) {
+ arr.__proto__ = Buffer.prototype;
+ return arr
+};
+
+function from (that, value, encodingOrOffset, length) {
+ if (typeof value === 'number') {
+ throw new TypeError('"value" argument must not be a number')
+ }
+
+ if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
+ return fromArrayBuffer(that, value, encodingOrOffset, length)
+ }
+
+ if (typeof value === 'string') {
+ return fromString(that, value, encodingOrOffset)
+ }
+
+ return fromObject(that, value)
+}
+
+/**
+ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
+ * if value is a number.
+ * Buffer.from(str[, encoding])
+ * Buffer.from(array)
+ * Buffer.from(buffer)
+ * Buffer.from(arrayBuffer[, byteOffset[, length]])
+ **/
+Buffer.from = function (value, encodingOrOffset, length) {
+ return from(null, value, encodingOrOffset, length)
+};
+
+if (Buffer.TYPED_ARRAY_SUPPORT) {
+ Buffer.prototype.__proto__ = Uint8Array.prototype;
+ Buffer.__proto__ = Uint8Array;
+}
+
+function assertSize (size) {
+ if (typeof size !== 'number') {
+ throw new TypeError('"size" argument must be a number')
+ } else if (size < 0) {
+ throw new RangeError('"size" argument must not be negative')
+ }
+}
+
+function alloc (that, size, fill, encoding) {
+ assertSize(size);
+ if (size <= 0) {
+ return createBuffer(that, size)
+ }
+ if (fill !== undefined) {
+ // Only pay attention to encoding if it's a string. This
+ // prevents accidentally sending in a number that would
+ // be interpretted as a start offset.
+ return typeof encoding === 'string'
+ ? createBuffer(that, size).fill(fill, encoding)
+ : createBuffer(that, size).fill(fill)
+ }
+ return createBuffer(that, size)
+}
+
+/**
+ * Creates a new filled Buffer instance.
+ * alloc(size[, fill[, encoding]])
+ **/
+Buffer.alloc = function (size, fill, encoding) {
+ return alloc(null, size, fill, encoding)
+};
+
+function allocUnsafe (that, size) {
+ assertSize(size);
+ that = createBuffer(that, size < 0 ? 0 : checked(size) | 0);
+ if (!Buffer.TYPED_ARRAY_SUPPORT) {
+ for (var i = 0; i < size; ++i) {
+ that[i] = 0;
+ }
+ }
+ return that
+}
+
+/**
+ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
+ * */
+Buffer.allocUnsafe = function (size) {
+ return allocUnsafe(null, size)
+};
+/**
+ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
+ */
+Buffer.allocUnsafeSlow = function (size) {
+ return allocUnsafe(null, size)
+};
+
+function fromString (that, string, encoding) {
+ if (typeof encoding !== 'string' || encoding === '') {
+ encoding = 'utf8';
+ }
+
+ if (!Buffer.isEncoding(encoding)) {
+ throw new TypeError('"encoding" must be a valid string encoding')
+ }
+
+ var length = byteLength(string, encoding) | 0;
+ that = createBuffer(that, length);
+
+ var actual = that.write(string, encoding);
+
+ if (actual !== length) {
+ // Writing a hex string, for example, that contains invalid characters will
+ // cause everything after the first invalid character to be ignored. (e.g.
+ // 'abxxcd' will be treated as 'ab')
+ that = that.slice(0, actual);
+ }
+
+ return that
+}
+
+function fromArrayLike (that, array) {
+ var length = array.length < 0 ? 0 : checked(array.length) | 0;
+ that = createBuffer(that, length);
+ for (var i = 0; i < length; i += 1) {
+ that[i] = array[i] & 255;
+ }
+ return that
+}
+
+function fromArrayBuffer (that, array, byteOffset, length) {
+ array.byteLength; // this throws if `array` is not a valid ArrayBuffer
+
+ if (byteOffset < 0 || array.byteLength < byteOffset) {
+ throw new RangeError('\'offset\' is out of bounds')
+ }
+
+ if (array.byteLength < byteOffset + (length || 0)) {
+ throw new RangeError('\'length\' is out of bounds')
+ }
+
+ if (byteOffset === undefined && length === undefined) {
+ array = new Uint8Array(array);
+ } else if (length === undefined) {
+ array = new Uint8Array(array, byteOffset);
+ } else {
+ array = new Uint8Array(array, byteOffset, length);
+ }
+
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ // Return an augmented `Uint8Array` instance, for best performance
+ that = array;
+ that.__proto__ = Buffer.prototype;
+ } else {
+ // Fallback: Return an object instance of the Buffer class
+ that = fromArrayLike(that, array);
+ }
+ return that
+}
+
+function fromObject (that, obj) {
+ if (internalIsBuffer(obj)) {
+ var len = checked(obj.length) | 0;
+ that = createBuffer(that, len);
+
+ if (that.length === 0) {
+ return that
+ }
+
+ obj.copy(that, 0, 0, len);
+ return that
+ }
+
+ if (obj) {
+ if ((typeof ArrayBuffer !== 'undefined' &&
+ obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
+ if (typeof obj.length !== 'number' || isnan(obj.length)) {
+ return createBuffer(that, 0)
+ }
+ return fromArrayLike(that, obj)
+ }
+
+ if (obj.type === 'Buffer' && isArray(obj.data)) {
+ return fromArrayLike(that, obj.data)
+ }
+ }
+
+ throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
+}
+
+function checked (length) {
+ // Note: cannot use `length < kMaxLength()` here because that fails when
+ // length is NaN (which is otherwise coerced to zero.)
+ if (length >= kMaxLength()) {
+ throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+ 'size: 0x' + kMaxLength().toString(16) + ' bytes')
+ }
+ return length | 0
+}
+
+function SlowBuffer (length) {
+ if (+length != length) { // eslint-disable-line eqeqeq
+ length = 0;
+ }
+ return Buffer.alloc(+length)
+}
+Buffer.isBuffer = isBuffer;
+function internalIsBuffer (b) {
+ return !!(b != null && b._isBuffer)
+}
+
+Buffer.compare = function compare (a, b) {
+ if (!internalIsBuffer(a) || !internalIsBuffer(b)) {
+ throw new TypeError('Arguments must be Buffers')
+ }
+
+ if (a === b) return 0
+
+ var x = a.length;
+ var y = b.length;
+
+ for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+ if (a[i] !== b[i]) {
+ x = a[i];
+ y = b[i];
+ break
+ }
+ }
+
+ if (x < y) return -1
+ if (y < x) return 1
+ return 0
+};
+
+Buffer.isEncoding = function isEncoding (encoding) {
+ switch (String(encoding).toLowerCase()) {
+ case 'hex':
+ case 'utf8':
+ case 'utf-8':
+ case 'ascii':
+ case 'latin1':
+ case 'binary':
+ case 'base64':
+ case 'ucs2':
+ case 'ucs-2':
+ case 'utf16le':
+ case 'utf-16le':
+ return true
+ default:
+ return false
+ }
+};
+
+Buffer.concat = function concat (list, length) {
+ if (!isArray(list)) {
+ throw new TypeError('"list" argument must be an Array of Buffers')
+ }
+
+ if (list.length === 0) {
+ return Buffer.alloc(0)
+ }
+
+ var i;
+ if (length === undefined) {
+ length = 0;
+ for (i = 0; i < list.length; ++i) {
+ length += list[i].length;
+ }
+ }
+
+ var buffer = Buffer.allocUnsafe(length);
+ var pos = 0;
+ for (i = 0; i < list.length; ++i) {
+ var buf = list[i];
+ if (!internalIsBuffer(buf)) {
+ throw new TypeError('"list" argument must be an Array of Buffers')
+ }
+ buf.copy(buffer, pos);
+ pos += buf.length;
+ }
+ return buffer
+};
+
+function byteLength (string, encoding) {
+ if (internalIsBuffer(string)) {
+ return string.length
+ }
+ if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
+ (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
+ return string.byteLength
+ }
+ if (typeof string !== 'string') {
+ string = '' + string;
+ }
+
+ var len = string.length;
+ if (len === 0) return 0
+
+ // Use a for loop to avoid recursion
+ var loweredCase = false;
+ for (;;) {
+ switch (encoding) {
+ case 'ascii':
+ case 'latin1':
+ case 'binary':
+ return len
+ case 'utf8':
+ case 'utf-8':
+ case undefined:
+ return utf8ToBytes(string).length
+ case 'ucs2':
+ case 'ucs-2':
+ case 'utf16le':
+ case 'utf-16le':
+ return len * 2
+ case 'hex':
+ return len >>> 1
+ case 'base64':
+ return base64ToBytes(string).length
+ default:
+ if (loweredCase) return utf8ToBytes(string).length // assume utf8
+ encoding = ('' + encoding).toLowerCase();
+ loweredCase = true;
+ }
+ }
+}
+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 coersion 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;
+ }
+ }
+}
+
+// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
+// Buffer instances.
+Buffer.prototype._isBuffer = true;
+
+function swap (b, n, m) {
+ var i = b[n];
+ b[n] = b[m];
+ b[m] = i;
+}
+
+Buffer.prototype.swap16 = function swap16 () {
+ var len = this.length;
+ if (len % 2 !== 0) {
+ throw new RangeError('Buffer size must be a multiple of 16-bits')
+ }
+ for (var i = 0; i < len; i += 2) {
+ swap(this, i, i + 1);
+ }
+ return this
+};
+
+Buffer.prototype.swap32 = function swap32 () {
+ var len = this.length;
+ if (len % 4 !== 0) {
+ throw new RangeError('Buffer size must be a multiple of 32-bits')
+ }
+ for (var i = 0; i < len; i += 4) {
+ swap(this, i, i + 3);
+ swap(this, i + 1, i + 2);
+ }
+ return this
+};
+
+Buffer.prototype.swap64 = function swap64 () {
+ var len = this.length;
+ if (len % 8 !== 0) {
+ throw new RangeError('Buffer size must be a multiple of 64-bits')
+ }
+ for (var i = 0; i < len; i += 8) {
+ swap(this, i, i + 7);
+ swap(this, i + 1, i + 6);
+ swap(this, i + 2, i + 5);
+ swap(this, i + 3, i + 4);
+ }
+ return this
+};
+
+Buffer.prototype.toString = function toString () {
+ var length = this.length | 0;
+ if (length === 0) return ''
+ if (arguments.length === 0) return utf8Slice(this, 0, length)
+ return slowToString.apply(this, arguments)
+};
+
+Buffer.prototype.equals = function equals (b) {
+ if (!internalIsBuffer(b)) throw new TypeError('Argument must be a Buffer')
+ if (this === b) return true
+ return Buffer.compare(this, b) === 0
+};
+
+Buffer.prototype.inspect = function inspect () {
+ var str = '';
+ var max = INSPECT_MAX_BYTES;
+ if (this.length > 0) {
+ str = this.toString('hex', 0, max).match(/.{2}/g).join(' ');
+ if (this.length > max) str += ' ... ';
+ }
+ return '<Buffer ' + str + '>'
+};
+
+Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
+ if (!internalIsBuffer(target)) {
+ throw new TypeError('Argument must be a Buffer')
+ }
+
+ if (start === undefined) {
+ start = 0;
+ }
+ if (end === undefined) {
+ end = target ? target.length : 0;
+ }
+ if (thisStart === undefined) {
+ thisStart = 0;
+ }
+ if (thisEnd === undefined) {
+ thisEnd = this.length;
+ }
+
+ if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
+ throw new RangeError('out of range index')
+ }
+
+ if (thisStart >= thisEnd && start >= end) {
+ return 0
+ }
+ if (thisStart >= thisEnd) {
+ return -1
+ }
+ if (start >= end) {
+ return 1
+ }
+
+ start >>>= 0;
+ end >>>= 0;
+ thisStart >>>= 0;
+ thisEnd >>>= 0;
+
+ if (this === target) return 0
+
+ var x = thisEnd - thisStart;
+ var y = end - start;
+ var len = Math.min(x, y);
+
+ var thisCopy = this.slice(thisStart, thisEnd);
+ var targetCopy = target.slice(start, end);
+
+ for (var i = 0; i < len; ++i) {
+ if (thisCopy[i] !== targetCopy[i]) {
+ x = thisCopy[i];
+ y = targetCopy[i];
+ break
+ }
+ }
+
+ if (x < y) return -1
+ if (y < x) return 1
+ return 0
+};
+
+// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
+// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
+//
+// Arguments:
+// - buffer - a Buffer to search
+// - val - a string, Buffer, or number
+// - byteOffset - an index into `buffer`; will be clamped to an int32
+// - encoding - an optional encoding, relevant is val is a string
+// - dir - true for indexOf, false for lastIndexOf
+function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
+ // Empty buffer means no match
+ if (buffer.length === 0) return -1
+
+ // Normalize byteOffset
+ if (typeof byteOffset === 'string') {
+ encoding = byteOffset;
+ byteOffset = 0;
+ } else if (byteOffset > 0x7fffffff) {
+ byteOffset = 0x7fffffff;
+ } else if (byteOffset < -0x80000000) {
+ byteOffset = -0x80000000;
+ }
+ byteOffset = +byteOffset; // Coerce to Number.
+ if (isNaN(byteOffset)) {
+ // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
+ byteOffset = dir ? 0 : (buffer.length - 1);
+ }
+
+ // Normalize byteOffset: negative offsets start from the end of the buffer
+ if (byteOffset < 0) byteOffset = buffer.length + byteOffset;
+ if (byteOffset >= buffer.length) {
+ if (dir) return -1
+ else byteOffset = buffer.length - 1;
+ } else if (byteOffset < 0) {
+ if (dir) byteOffset = 0;
+ else return -1
+ }
+
+ // Normalize val
+ if (typeof val === 'string') {
+ val = Buffer.from(val, encoding);
+ }
+
+ // Finally, search either indexOf (if dir is true) or lastIndexOf
+ if (internalIsBuffer(val)) {
+ // Special case: looking for empty string/buffer always fails
+ if (val.length === 0) {
+ return -1
+ }
+ return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
+ } else if (typeof val === 'number') {
+ val = val & 0xFF; // Search for a byte value [0-255]
+ if (Buffer.TYPED_ARRAY_SUPPORT &&
+ typeof Uint8Array.prototype.indexOf === 'function') {
+ if (dir) {
+ return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
+ } else {
+ return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
+ }
+ }
+ return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
+ }
+
+ throw new TypeError('val must be string, number or Buffer')
+}
+
+function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
+ var indexSize = 1;
+ var arrLength = arr.length;
+ var valLength = val.length;
+
+ if (encoding !== undefined) {
+ encoding = String(encoding).toLowerCase();
+ if (encoding === 'ucs2' || encoding === 'ucs-2' ||
+ encoding === 'utf16le' || encoding === 'utf-16le') {
+ if (arr.length < 2 || val.length < 2) {
+ return -1
+ }
+ indexSize = 2;
+ arrLength /= 2;
+ valLength /= 2;
+ byteOffset /= 2;
+ }
+ }
+
+ function read (buf, i) {
+ if (indexSize === 1) {
+ return buf[i]
+ } else {
+ return buf.readUInt16BE(i * indexSize)
+ }
+ }
+
+ var i;
+ if (dir) {
+ var foundIndex = -1;
+ for (i = byteOffset; i < arrLength; i++) {
+ if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
+ if (foundIndex === -1) foundIndex = i;
+ if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
+ } else {
+ if (foundIndex !== -1) i -= i - foundIndex;
+ foundIndex = -1;
+ }
+ }
+ } else {
+ if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength;
+ for (i = byteOffset; i >= 0; i--) {
+ var found = true;
+ for (var j = 0; j < valLength; j++) {
+ if (read(arr, i + j) !== read(val, j)) {
+ found = false;
+ break
+ }
+ }
+ if (found) return i
+ }
+ }
+
+ return -1
+}
+
+Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
+ return this.indexOf(val, byteOffset, encoding) !== -1
+};
+
+Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
+ return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+};
+
+Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
+ return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+};
+
+function hexWrite (buf, string, offset, length) {
+ offset = Number(offset) || 0;
+ var remaining = buf.length - offset;
+ if (!length) {
+ length = remaining;
+ } else {
+ length = Number(length);
+ if (length > remaining) {
+ length = remaining;
+ }
+ }
+
+ // must be an even number of digits
+ var strLen = string.length;
+ if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+
+ if (length > strLen / 2) {
+ length = strLen / 2;
+ }
+ for (var i = 0; i < length; ++i) {
+ var parsed = parseInt(string.substr(i * 2, 2), 16);
+ if (isNaN(parsed)) return i
+ buf[offset + i] = parsed;
+ }
+ return i
+}
+
+function utf8Write (buf, string, offset, length) {
+ return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+function asciiWrite (buf, string, offset, length) {
+ return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
+
+function latin1Write (buf, string, offset, length) {
+ return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+ return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
+
+function ucs2Write (buf, string, offset, length) {
+ return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+ // Buffer#write(string)
+ if (offset === undefined) {
+ encoding = 'utf8';
+ length = this.length;
+ offset = 0;
+ // Buffer#write(string, encoding)
+ } else if (length === undefined && typeof offset === 'string') {
+ encoding = offset;
+ length = this.length;
+ offset = 0;
+ // Buffer#write(string, offset[, length][, encoding])
+ } else if (isFinite(offset)) {
+ offset = offset | 0;
+ if (isFinite(length)) {
+ length = length | 0;
+ if (encoding === undefined) encoding = 'utf8';
+ } else {
+ encoding = length;
+ length = undefined;
+ }
+ // legacy write(string, encoding, offset, length) - remove in v0.13
+ } else {
+ throw new Error(
+ 'Buffer.write(string, encoding, offset[, length]) is no longer supported'
+ )
+ }
+
+ var remaining = this.length - offset;
+ if (length === undefined || length > remaining) length = remaining;
+
+ if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+ throw new RangeError('Attempt to write outside buffer bounds')
+ }
+
+ if (!encoding) encoding = 'utf8';
+
+ var loweredCase = false;
+ for (;;) {
+ switch (encoding) {
+ case 'hex':
+ return hexWrite(this, string, offset, length)
+
+ case 'utf8':
+ case 'utf-8':
+ return utf8Write(this, string, offset, length)
+
+ case 'ascii':
+ return asciiWrite(this, string, offset, length)
+
+ case 'latin1':
+ case 'binary':
+ return latin1Write(this, string, offset, length)
+
+ case 'base64':
+ // Warning: maxLength not taken into account in base64Write
+ return base64Write(this, string, offset, length)
+
+ case 'ucs2':
+ case 'ucs-2':
+ case 'utf16le':
+ case 'utf-16le':
+ return ucs2Write(this, string, offset, length)
+
+ default:
+ if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+ encoding = ('' + encoding).toLowerCase();
+ loweredCase = true;
+ }
+ }
+};
+
+Buffer.prototype.toJSON = function toJSON () {
+ return {
+ type: 'Buffer',
+ data: Array.prototype.slice.call(this._arr || this, 0)
+ }
+};
+
+function base64Slice (buf, start, end) {
+ if (start === 0 && end === buf.length) {
+ return fromByteArray(buf)
+ } else {
+ return fromByteArray(buf.slice(start, end))
+ }
+}
+
+function utf8Slice (buf, start, end) {
+ end = Math.min(buf.length, end);
+ var res = [];
+
+ var i = start;
+ while (i < end) {
+ var firstByte = buf[i];
+ var codePoint = null;
+ var bytesPerSequence = (firstByte > 0xEF) ? 4
+ : (firstByte > 0xDF) ? 3
+ : (firstByte > 0xBF) ? 2
+ : 1;
+
+ if (i + bytesPerSequence <= end) {
+ var secondByte, thirdByte, fourthByte, tempCodePoint;
+
+ switch (bytesPerSequence) {
+ case 1:
+ if (firstByte < 0x80) {
+ codePoint = firstByte;
+ }
+ break
+ case 2:
+ secondByte = buf[i + 1];
+ if ((secondByte & 0xC0) === 0x80) {
+ tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F);
+ if (tempCodePoint > 0x7F) {
+ codePoint = tempCodePoint;
+ }
+ }
+ break
+ case 3:
+ secondByte = buf[i + 1];
+ thirdByte = buf[i + 2];
+ if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+ tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F);
+ if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+ codePoint = tempCodePoint;
+ }
+ }
+ break
+ case 4:
+ secondByte = buf[i + 1];
+ thirdByte = buf[i + 2];
+ fourthByte = buf[i + 3];
+ if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+ tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F);
+ if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+ codePoint = tempCodePoint;
+ }
+ }
+ }
+ }
+
+ if (codePoint === null) {
+ // we did not generate a valid codePoint so insert a
+ // replacement char (U+FFFD) and advance only 1 byte
+ codePoint = 0xFFFD;
+ bytesPerSequence = 1;
+ } else if (codePoint > 0xFFFF) {
+ // encode to utf16 (surrogate pair dance)
+ codePoint -= 0x10000;
+ res.push(codePoint >>> 10 & 0x3FF | 0xD800);
+ codePoint = 0xDC00 | codePoint & 0x3FF;
+ }
+
+ res.push(codePoint);
+ i += bytesPerSequence;
+ }
+
+ return decodeCodePointsArray(res)
+}
+
+// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+// the lowest limit is Chrome, with 0x10000 args.
+// We go 1 magnitude less, for safety
+var MAX_ARGUMENTS_LENGTH = 0x1000;
+
+function decodeCodePointsArray (codePoints) {
+ var len = codePoints.length;
+ if (len <= MAX_ARGUMENTS_LENGTH) {
+ return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+ }
+
+ // Decode in chunks to avoid "call stack size exceeded".
+ var res = '';
+ var i = 0;
+ while (i < len) {
+ res += String.fromCharCode.apply(
+ String,
+ codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+ );
+ }
+ return res
+}
+
+function asciiSlice (buf, start, end) {
+ var ret = '';
+ end = Math.min(buf.length, end);
+
+ for (var i = start; i < end; ++i) {
+ ret += String.fromCharCode(buf[i] & 0x7F);
+ }
+ return ret
+}
+
+function latin1Slice (buf, start, end) {
+ var ret = '';
+ end = Math.min(buf.length, end);
+
+ for (var i = start; i < end; ++i) {
+ ret += String.fromCharCode(buf[i]);
+ }
+ return ret
+}
+
+function hexSlice (buf, start, end) {
+ var len = buf.length;
+
+ if (!start || start < 0) start = 0;
+ if (!end || end < 0 || end > len) end = len;
+
+ var out = '';
+ for (var i = start; i < end; ++i) {
+ out += toHex(buf[i]);
+ }
+ return out
+}
+
+function utf16leSlice (buf, start, end) {
+ var bytes = buf.slice(start, end);
+ var res = '';
+ for (var i = 0; i < bytes.length; i += 2) {
+ res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256);
+ }
+ return res
+}
+
+Buffer.prototype.slice = function slice (start, end) {
+ var len = this.length;
+ start = ~~start;
+ end = end === undefined ? len : ~~end;
+
+ if (start < 0) {
+ start += len;
+ if (start < 0) start = 0;
+ } else if (start > len) {
+ start = len;
+ }
+
+ if (end < 0) {
+ end += len;
+ if (end < 0) end = 0;
+ } else if (end > len) {
+ end = len;
+ }
+
+ if (end < start) end = start;
+
+ var newBuf;
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ newBuf = this.subarray(start, end);
+ newBuf.__proto__ = Buffer.prototype;
+ } else {
+ var sliceLen = end - start;
+ newBuf = new Buffer(sliceLen, undefined);
+ for (var i = 0; i < sliceLen; ++i) {
+ newBuf[i] = this[i + start];
+ }
+ }
+
+ return newBuf
+};
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+ if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+ if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+ offset = offset | 0;
+ byteLength = byteLength | 0;
+ if (!noAssert) checkOffset(offset, byteLength, this.length);
+
+ var val = this[offset];
+ var mul = 1;
+ var i = 0;
+ while (++i < byteLength && (mul *= 0x100)) {
+ val += this[offset + i] * mul;
+ }
+
+ return val
+};
+
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+ offset = offset | 0;
+ byteLength = byteLength | 0;
+ if (!noAssert) {
+ checkOffset(offset, byteLength, this.length);
+ }
+
+ var val = this[offset + --byteLength];
+ var mul = 1;
+ while (byteLength > 0 && (mul *= 0x100)) {
+ val += this[offset + --byteLength] * mul;
+ }
+
+ return val
+};
+
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 1, this.length);
+ return this[offset]
+};
+
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 2, this.length);
+ return this[offset] | (this[offset + 1] << 8)
+};
+
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 2, this.length);
+ return (this[offset] << 8) | this[offset + 1]
+};
+
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 4, this.length);
+
+ return ((this[offset]) |
+ (this[offset + 1] << 8) |
+ (this[offset + 2] << 16)) +
+ (this[offset + 3] * 0x1000000)
+};
+
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 4, this.length);
+
+ return (this[offset] * 0x1000000) +
+ ((this[offset + 1] << 16) |
+ (this[offset + 2] << 8) |
+ this[offset + 3])
+};
+
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+ offset = offset | 0;
+ byteLength = byteLength | 0;
+ if (!noAssert) checkOffset(offset, byteLength, this.length);
+
+ var val = this[offset];
+ var mul = 1;
+ var i = 0;
+ while (++i < byteLength && (mul *= 0x100)) {
+ val += this[offset + i] * mul;
+ }
+ mul *= 0x80;
+
+ if (val >= mul) val -= Math.pow(2, 8 * byteLength);
+
+ return val
+};
+
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+ offset = offset | 0;
+ byteLength = byteLength | 0;
+ if (!noAssert) checkOffset(offset, byteLength, this.length);
+
+ var i = byteLength;
+ var mul = 1;
+ var val = this[offset + --i];
+ while (i > 0 && (mul *= 0x100)) {
+ val += this[offset + --i] * mul;
+ }
+ mul *= 0x80;
+
+ if (val >= mul) val -= Math.pow(2, 8 * byteLength);
+
+ return val
+};
+
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 1, this.length);
+ if (!(this[offset] & 0x80)) return (this[offset])
+ return ((0xff - this[offset] + 1) * -1)
+};
+
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 2, this.length);
+ var val = this[offset] | (this[offset + 1] << 8);
+ return (val & 0x8000) ? val | 0xFFFF0000 : val
+};
+
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 2, this.length);
+ var val = this[offset + 1] | (this[offset] << 8);
+ return (val & 0x8000) ? val | 0xFFFF0000 : val
+};
+
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 4, this.length);
+
+ return (this[offset]) |
+ (this[offset + 1] << 8) |
+ (this[offset + 2] << 16) |
+ (this[offset + 3] << 24)
+};
+
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 4, this.length);
+
+ return (this[offset] << 24) |
+ (this[offset + 1] << 16) |
+ (this[offset + 2] << 8) |
+ (this[offset + 3])
+};
+
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 4, this.length);
+ return read(this, offset, true, 23, 4)
+};
+
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 4, this.length);
+ return read(this, offset, false, 23, 4)
+};
+
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 8, this.length);
+ return read(this, offset, true, 52, 8)
+};
+
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+ if (!noAssert) checkOffset(offset, 8, this.length);
+ return read(this, offset, false, 52, 8)
+};
+
+function checkInt (buf, value, offset, ext, max, min) {
+ if (!internalIsBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
+ if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
+ if (offset + ext > buf.length) throw new RangeError('Index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ byteLength = byteLength | 0;
+ if (!noAssert) {
+ var maxBytes = Math.pow(2, 8 * byteLength) - 1;
+ checkInt(this, value, offset, byteLength, maxBytes, 0);
+ }
+
+ var mul = 1;
+ var i = 0;
+ this[offset] = value & 0xFF;
+ while (++i < byteLength && (mul *= 0x100)) {
+ this[offset + i] = (value / mul) & 0xFF;
+ }
+
+ return offset + byteLength
+};
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ byteLength = byteLength | 0;
+ if (!noAssert) {
+ var maxBytes = Math.pow(2, 8 * byteLength) - 1;
+ checkInt(this, value, offset, byteLength, maxBytes, 0);
+ }
+
+ var i = byteLength - 1;
+ var mul = 1;
+ this[offset + i] = value & 0xFF;
+ while (--i >= 0 && (mul *= 0x100)) {
+ this[offset + i] = (value / mul) & 0xFF;
+ }
+
+ return offset + byteLength
+};
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0);
+ if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
+ this[offset] = (value & 0xff);
+ return offset + 1
+};
+
+function objectWriteUInt16 (buf, value, offset, littleEndian) {
+ if (value < 0) value = 0xffff + value + 1;
+ for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
+ buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+ (littleEndian ? i : 1 - i) * 8;
+ }
+}
+
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value & 0xff);
+ this[offset + 1] = (value >>> 8);
+ } else {
+ objectWriteUInt16(this, value, offset, true);
+ }
+ return offset + 2
+};
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value >>> 8);
+ this[offset + 1] = (value & 0xff);
+ } else {
+ objectWriteUInt16(this, value, offset, false);
+ }
+ return offset + 2
+};
+
+function objectWriteUInt32 (buf, value, offset, littleEndian) {
+ if (value < 0) value = 0xffffffff + value + 1;
+ for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
+ buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff;
+ }
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset + 3] = (value >>> 24);
+ this[offset + 2] = (value >>> 16);
+ this[offset + 1] = (value >>> 8);
+ this[offset] = (value & 0xff);
+ } else {
+ objectWriteUInt32(this, value, offset, true);
+ }
+ return offset + 4
+};
+
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value >>> 24);
+ this[offset + 1] = (value >>> 16);
+ this[offset + 2] = (value >>> 8);
+ this[offset + 3] = (value & 0xff);
+ } else {
+ objectWriteUInt32(this, value, offset, false);
+ }
+ return offset + 4
+};
+
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) {
+ var limit = Math.pow(2, 8 * byteLength - 1);
+
+ checkInt(this, value, offset, byteLength, limit - 1, -limit);
+ }
+
+ var i = 0;
+ var mul = 1;
+ var sub = 0;
+ this[offset] = value & 0xFF;
+ while (++i < byteLength && (mul *= 0x100)) {
+ if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
+ sub = 1;
+ }
+ this[offset + i] = ((value / mul) >> 0) - sub & 0xFF;
+ }
+
+ return offset + byteLength
+};
+
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) {
+ var limit = Math.pow(2, 8 * byteLength - 1);
+
+ checkInt(this, value, offset, byteLength, limit - 1, -limit);
+ }
+
+ var i = byteLength - 1;
+ var mul = 1;
+ var sub = 0;
+ this[offset + i] = value & 0xFF;
+ while (--i >= 0 && (mul *= 0x100)) {
+ if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
+ sub = 1;
+ }
+ this[offset + i] = ((value / mul) >> 0) - sub & 0xFF;
+ }
+
+ return offset + byteLength
+};
+
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80);
+ if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
+ if (value < 0) value = 0xff + value + 1;
+ this[offset] = (value & 0xff);
+ return offset + 1
+};
+
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value & 0xff);
+ this[offset + 1] = (value >>> 8);
+ } else {
+ objectWriteUInt16(this, value, offset, true);
+ }
+ return offset + 2
+};
+
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value >>> 8);
+ this[offset + 1] = (value & 0xff);
+ } else {
+ objectWriteUInt16(this, value, offset, false);
+ }
+ return offset + 2
+};
+
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value & 0xff);
+ this[offset + 1] = (value >>> 8);
+ this[offset + 2] = (value >>> 16);
+ this[offset + 3] = (value >>> 24);
+ } else {
+ objectWriteUInt32(this, value, offset, true);
+ }
+ return offset + 4
+};
+
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+ value = +value;
+ offset = offset | 0;
+ if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
+ if (value < 0) value = 0xffffffff + value + 1;
+ if (Buffer.TYPED_ARRAY_SUPPORT) {
+ this[offset] = (value >>> 24);
+ this[offset + 1] = (value >>> 16);
+ this[offset + 2] = (value >>> 8);
+ this[offset + 3] = (value & 0xff);
+ } else {
+ objectWriteUInt32(this, value, offset, false);
+ }
+ return offset + 4
+};
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+ if (offset + ext > buf.length) throw new RangeError('Index out of range')
+ if (offset < 0) throw new RangeError('Index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+ if (!noAssert) {
+ checkIEEE754(buf, value, offset, 4);
+ }
+ write(buf, value, offset, littleEndian, 23, 4);
+ return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+ return writeFloat(this, value, offset, true, noAssert)
+};
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+ return writeFloat(this, value, offset, false, noAssert)
+};
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+ if (!noAssert) {
+ checkIEEE754(buf, value, offset, 8);
+ }
+ write(buf, value, offset, littleEndian, 52, 8);
+ return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+ return writeDouble(this, value, offset, true, noAssert)
+};
+
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+ return writeDouble(this, value, offset, false, noAssert)
+};
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+ if (!start) start = 0;
+ if (!end && end !== 0) end = this.length;
+ if (targetStart >= target.length) targetStart = target.length;
+ if (!targetStart) targetStart = 0;
+ if (end > 0 && end < start) end = start;
+
+ // Copy 0 bytes; we're done
+ if (end === start) return 0
+ if (target.length === 0 || this.length === 0) return 0
+
+ // Fatal error conditions
+ if (targetStart < 0) {
+ throw new RangeError('targetStart out of bounds')
+ }
+ if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+ if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+ // Are we oob?
+ if (end > this.length) end = this.length;
+ if (target.length - targetStart < end - start) {
+ end = target.length - targetStart + start;
+ }
+
+ var len = end - start;
+ var i;
+
+ if (this === target && start < targetStart && targetStart < end) {
+ // descending copy from end
+ for (i = len - 1; i >= 0; --i) {
+ target[i + targetStart] = this[i + start];
+ }
+ } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+ // ascending copy from start
+ for (i = 0; i < len; ++i) {
+ target[i + targetStart] = this[i + start];
+ }
+ } else {
+ Uint8Array.prototype.set.call(
+ target,
+ this.subarray(start, start + len),
+ targetStart
+ );
+ }
+
+ return len
+};
+
+// Usage:
+// buffer.fill(number[, offset[, end]])
+// buffer.fill(buffer[, offset[, end]])
+// buffer.fill(string[, offset[, end]][, encoding])
+Buffer.prototype.fill = function fill (val, start, end, encoding) {
+ // Handle string cases:
+ if (typeof val === 'string') {
+ if (typeof start === 'string') {
+ encoding = start;
+ start = 0;
+ end = this.length;
+ } else if (typeof end === 'string') {
+ encoding = end;
+ end = this.length;
+ }
+ if (val.length === 1) {
+ var code = val.charCodeAt(0);
+ if (code < 256) {
+ val = code;
+ }
+ }
+ if (encoding !== undefined && typeof encoding !== 'string') {
+ throw new TypeError('encoding must be a string')
+ }
+ if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
+ throw new TypeError('Unknown encoding: ' + encoding)
+ }
+ } else if (typeof val === 'number') {
+ val = val & 255;
+ }
+
+ // Invalid ranges are not set to a default, so can range check early.
+ if (start < 0 || this.length < start || this.length < end) {
+ throw new RangeError('Out of range index')
+ }
+
+ if (end <= start) {
+ return this
+ }
+
+ start = start >>> 0;
+ end = end === undefined ? this.length : end >>> 0;
+
+ if (!val) val = 0;
+
+ var i;
+ if (typeof val === 'number') {
+ for (i = start; i < end; ++i) {
+ this[i] = val;
+ }
+ } else {
+ var bytes = internalIsBuffer(val)
+ ? val
+ : utf8ToBytes(new Buffer(val, encoding).toString());
+ var len = bytes.length;
+ for (i = 0; i < end - start; ++i) {
+ this[i + start] = bytes[i % len];
+ }
+ }
+
+ return this
+};
+
+// HELPER FUNCTIONS
+// ================
+
+var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g;
+
+function base64clean (str) {
+ // Node strips out invalid characters like \n and \t from the string, base64-js does not
+ str = stringtrim(str).replace(INVALID_BASE64_RE, '');
+ // Node converts strings with length < 2 to ''
+ if (str.length < 2) return ''
+ // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+ while (str.length % 4 !== 0) {
+ str = str + '=';
+ }
+ return str
+}
+
+function stringtrim (str) {
+ if (str.trim) return str.trim()
+ return str.replace(/^\s+|\s+$/g, '')
+}
+
+function toHex (n) {
+ if (n < 16) return '0' + n.toString(16)
+ return n.toString(16)
+}
+
+function utf8ToBytes (string, units) {
+ units = units || Infinity;
+ var codePoint;
+ var length = string.length;
+ var leadSurrogate = null;
+ var bytes = [];
+
+ for (var i = 0; i < length; ++i) {
+ codePoint = string.charCodeAt(i);
+
+ // is surrogate component
+ if (codePoint > 0xD7FF && codePoint < 0xE000) {
+ // last char was a lead
+ if (!leadSurrogate) {
+ // no lead yet
+ if (codePoint > 0xDBFF) {
+ // unexpected trail
+ if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
+ continue
+ } else if (i + 1 === length) {
+ // unpaired lead
+ if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
+ continue
+ }
+
+ // valid lead
+ leadSurrogate = codePoint;
+
+ continue
+ }
+
+ // 2 leads in a row
+ if (codePoint < 0xDC00) {
+ if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
+ leadSurrogate = codePoint;
+ continue
+ }
+
+ // valid surrogate pair
+ codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000;
+ } else if (leadSurrogate) {
+ // valid bmp char, but last char was a lead
+ if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
+ }
+
+ leadSurrogate = null;
+
+ // encode utf8
+ if (codePoint < 0x80) {
+ if ((units -= 1) < 0) break
+ bytes.push(codePoint);
+ } else if (codePoint < 0x800) {
+ if ((units -= 2) < 0) break
+ bytes.push(
+ codePoint >> 0x6 | 0xC0,
+ codePoint & 0x3F | 0x80
+ );
+ } else if (codePoint < 0x10000) {
+ if ((units -= 3) < 0) break
+ bytes.push(
+ codePoint >> 0xC | 0xE0,
+ codePoint >> 0x6 & 0x3F | 0x80,
+ codePoint & 0x3F | 0x80
+ );
+ } else if (codePoint < 0x110000) {
+ if ((units -= 4) < 0) break
+ bytes.push(
+ codePoint >> 0x12 | 0xF0,
+ codePoint >> 0xC & 0x3F | 0x80,
+ codePoint >> 0x6 & 0x3F | 0x80,
+ codePoint & 0x3F | 0x80
+ );
+ } else {
+ throw new Error('Invalid code point')
+ }
+ }
+
+ return bytes
+}
+
+function asciiToBytes (str) {
+ var byteArray = [];
+ for (var i = 0; i < str.length; ++i) {
+ // Node's code seems to be doing this and not & 0x7F..
+ byteArray.push(str.charCodeAt(i) & 0xFF);
+ }
+ return byteArray
+}
+
+function utf16leToBytes (str, units) {
+ var c, hi, lo;
+ var byteArray = [];
+ for (var i = 0; i < str.length; ++i) {
+ if ((units -= 2) < 0) break
+
+ c = str.charCodeAt(i);
+ hi = c >> 8;
+ lo = c % 256;
+ byteArray.push(lo);
+ byteArray.push(hi);
+ }
+
+ return byteArray
+}
+
+
+function base64ToBytes (str) {
+ return toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length) {
+ for (var i = 0; i < length; ++i) {
+ if ((i + offset >= dst.length) || (i >= src.length)) break
+ dst[i + offset] = src[i];
+ }
+ return i
+}
+
+function isnan (val) {
+ return val !== val // eslint-disable-line no-self-compare
+}
+
+
+// the following is from is-buffer, also by Feross Aboukhadijeh and with same lisence
+// The _isBuffer check is for Safari 5-7 support, because it's missing
+// Object.prototype.constructor. Remove this eventually
+function isBuffer(obj) {
+ return obj != null && (!!obj._isBuffer || isFastBuffer(obj) || isSlowBuffer(obj))
+}
+
+function isFastBuffer (obj) {
+ return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
+}
+
+// For Node v0.10 support. Remove this eventually.
+function isSlowBuffer (obj) {
+ return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isFastBuffer(obj.slice(0, 0))
+}
+
+export { Buffer, INSPECT_MAX_BYTES, SlowBuffer, isBuffer, _kMaxLength as kMaxLength };
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-27 14:57:40 +0000