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Length must be a multiple of 4') } // Trim off extra bytes after placeholder bytes are found // See: https://github.com/beatgammit/base64-js/issues/42 var validLen = b64.indexOf('=') if (validLen === -1) validLen = len var placeHoldersLen = validLen === len ? 0 : 4 - (validLen % 4) return [validLen, placeHoldersLen] } // base64 is 4/3 + up to two characters of the original data function byteLength (b64) { var lens = getLens(b64) var validLen = lens[0] var placeHoldersLen = lens[1] return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen } function _byteLength (b64, validLen, placeHoldersLen) { return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen } function toByteArray (b64) { var tmp var lens = getLens(b64) var validLen = lens[0] var placeHoldersLen = lens[1] var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen)) var curByte = 0 // if there are placeholders, only get up to the last complete 4 chars var len = placeHoldersLen > 0 ? validLen - 4 : validLen var i for (i = 0; i < len; i += 4) { tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)] arr[curByte++] = (tmp >> 16) & 0xFF arr[curByte++] = (tmp >> 8) & 0xFF arr[curByte++] = tmp & 0xFF } if (placeHoldersLen === 2) { tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4) arr[curByte++] = tmp & 0xFF } if (placeHoldersLen === 1) { tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2) arr[curByte++] = (tmp >> 8) & 0xFF arr[curByte++] = 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) & 0xFF0000) + ((uint8[i + 1] << 8) & 0xFF00) + (uint8[i + 2] & 0xFF) output.push(tripletToBase64(tmp)) } return output.join('') } function fromByteArray (uint8) { var tmp var len = uint8.length var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes 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] parts.push( lookup[tmp >> 2] + lookup[(tmp << 4) & 0x3F] + '==' ) } else if (extraBytes === 2) { tmp = (uint8[len - 2] << 8) + uint8[len - 1] parts.push( lookup[tmp >> 10] + lookup[(tmp >> 4) & 0x3F] + lookup[(tmp << 2) & 0x3F] + '=' ) } return parts.join('') } }, 17656(module) { !function(e,t){ true?module.exports=t():0}(this,(function(){return function(e){var 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Symbol['for']('nodejs.util.inspect.custom') // eslint-disable-line dot-notation : null exports.Buffer = Buffer exports.SlowBuffer = SlowBuffer exports.INSPECT_MAX_BYTES = 50 const K_MAX_LENGTH = 0x7fffffff exports.kMaxLength = K_MAX_LENGTH /** * If `Buffer.TYPED_ARRAY_SUPPORT`: * === true Use Uint8Array implementation (fastest) * === false Print warning and recommend using `buffer` v4.x which has an 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+. * * We report that the browser does not support typed arrays if the are not subclassable * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support * for __proto__ and has a buggy typed array implementation. */ Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && typeof console.error === 'function') { console.error( 'This browser lacks typed array (Uint8Array) support which is required by ' + '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' ) } function typedArraySupport () { // Can typed array instances can be augmented? try { const arr = new Uint8Array(1) const proto = { foo: function () { return 42 } } Object.setPrototypeOf(proto, Uint8Array.prototype) Object.setPrototypeOf(arr, proto) return arr.foo() === 42 } catch (e) { return false } } Object.defineProperty(Buffer.prototype, 'parent', { enumerable: true, get: function () { if (!Buffer.isBuffer(this)) return undefined return this.buffer } }) Object.defineProperty(Buffer.prototype, 'offset', { enumerable: true, get: function () { if (!Buffer.isBuffer(this)) return undefined return this.byteOffset } }) function createBuffer (length) { if (length > K_MAX_LENGTH) { throw new RangeError('The value "' + length + '" is invalid for option "size"') } // Return an augmented `Uint8Array` instance const buf = new Uint8Array(length) Object.setPrototypeOf(buf, Buffer.prototype) return buf } /** * 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) { // Common case. if (typeof arg === 'number') { if (typeof encodingOrOffset === 'string') { throw new TypeError( 'The "string" argument must be of type string. Received type number' ) } return allocUnsafe(arg) } return from(arg, encodingOrOffset, length) } Buffer.poolSize = 8192 // not used by this implementation function from (value, encodingOrOffset, length) { if (typeof value === 'string') { return fromString(value, encodingOrOffset) } if (ArrayBuffer.isView(value)) { return fromArrayView(value) } if (value == null) { throw new TypeError( 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + 'or Array-like Object. Received type ' + (typeof value) ) } if (isInstance(value, ArrayBuffer) || (value && isInstance(value.buffer, ArrayBuffer))) { return fromArrayBuffer(value, encodingOrOffset, length) } if (typeof SharedArrayBuffer !== 'undefined' && (isInstance(value, SharedArrayBuffer) || (value && isInstance(value.buffer, SharedArrayBuffer)))) { return fromArrayBuffer(value, encodingOrOffset, length) } if (typeof value === 'number') { throw new TypeError( 'The "value" argument must not be of type number. Received type number' ) } const valueOf = value.valueOf && value.valueOf() if (valueOf != null && valueOf !== value) { return Buffer.from(valueOf, encodingOrOffset, length) } const b = fromObject(value) if (b) return b if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && typeof value[Symbol.toPrimitive] === 'function') { return Buffer.from(value[Symbol.toPrimitive]('string'), encodingOrOffset, length) } throw new TypeError( 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + 'or Array-like Object. Received type ' + (typeof 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(value, encodingOrOffset, length) } // Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: // https://github.com/feross/buffer/pull/148 Object.setPrototypeOf(Buffer.prototype, Uint8Array.prototype) Object.setPrototypeOf(Buffer, Uint8Array) function assertSize (size) { if (typeof size !== 'number') { throw new TypeError('"size" argument must be of type number') } else if (size < 0) { throw new RangeError('The value "' + size + '" is invalid for option "size"') } } function alloc (size, fill, encoding) { assertSize(size) if (size <= 0) { return createBuffer(size) } if (fill !== undefined) { // Only pay attention to encoding if it's a string. This // prevents accidentally sending in a number that would // be interpreted as a start offset. return typeof encoding === 'string' ? createBuffer(size).fill(fill, encoding) : createBuffer(size).fill(fill) } return createBuffer(size) } /** * Creates a new filled Buffer instance. * alloc(size[, fill[, encoding]]) **/ Buffer.alloc = function (size, fill, encoding) { return alloc(size, fill, encoding) } function allocUnsafe (size) { assertSize(size) return createBuffer(size < 0 ? 0 : checked(size) | 0) } /** * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. * */ Buffer.allocUnsafe = function (size) { return allocUnsafe(size) } /** * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. */ Buffer.allocUnsafeSlow = function (size) { return allocUnsafe(size) } function fromString (string, encoding) { if (typeof encoding !== 'string' || encoding === '') { encoding = 'utf8' } if (!Buffer.isEncoding(encoding)) { throw new TypeError('Unknown encoding: ' + encoding) } const length = byteLength(string, encoding) | 0 let buf = createBuffer(length) const actual = buf.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') buf = buf.slice(0, actual) } return buf } function fromArrayLike (array) { const length = array.length < 0 ? 0 : checked(array.length) | 0 const buf = createBuffer(length) for (let i = 0; i < length; i += 1) { buf[i] = array[i] & 255 } return buf } function fromArrayView (arrayView) { if (isInstance(arrayView, Uint8Array)) { const copy = new Uint8Array(arrayView) return fromArrayBuffer(copy.buffer, copy.byteOffset, copy.byteLength) } return fromArrayLike(arrayView) } function fromArrayBuffer (array, byteOffset, length) { if (byteOffset < 0 || array.byteLength < byteOffset) { throw new RangeError('"offset" is outside of buffer bounds') } if (array.byteLength < byteOffset + (length || 0)) { throw new RangeError('"length" is outside of buffer bounds') } let buf if (byteOffset === undefined && length === undefined) { buf = new Uint8Array(array) } else if (length === undefined) { buf = new Uint8Array(array, byteOffset) } else { buf = new Uint8Array(array, byteOffset, length) } // Return an augmented `Uint8Array` instance Object.setPrototypeOf(buf, Buffer.prototype) return buf } function fromObject (obj) { if (Buffer.isBuffer(obj)) { const len = checked(obj.length) | 0 const buf = createBuffer(len) if (buf.length === 0) { return buf } obj.copy(buf, 0, 0, len) return buf } if (obj.length !== undefined) { if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { return createBuffer(0) } return fromArrayLike(obj) } if (obj.type === 'Buffer' && Array.isArray(obj.data)) { return fromArrayLike(obj.data) } } function checked (length) { // Note: cannot use `length < K_MAX_LENGTH` here because that fails when // length is NaN (which is otherwise coerced to zero.) if (length >= K_MAX_LENGTH) { throw new RangeError('Attempt to allocate Buffer larger than maximum ' + 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') } return length | 0 } function SlowBuffer (length) { if (+length != length) { // eslint-disable-line eqeqeq length = 0 } return Buffer.alloc(+length) } Buffer.isBuffer = function isBuffer (b) { return b != null && b._isBuffer === true && b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false } Buffer.compare = function compare (a, b) { if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength) if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength) if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { throw new TypeError( 'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array' ) } if (a === b) return 0 let x = a.length let y = b.length for (let 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 (!Array.isArray(list)) { throw new TypeError('"list" argument must be an Array of Buffers') } if (list.length === 0) { return Buffer.alloc(0) } let i if (length === undefined) { length = 0 for (i = 0; i < list.length; ++i) { length += list[i].length } } const buffer = Buffer.allocUnsafe(length) let pos = 0 for (i = 0; i < list.length; ++i) { let buf = list[i] if (isInstance(buf, Uint8Array)) { if (pos + buf.length > buffer.length) { if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf) buf.copy(buffer, pos) } else { Uint8Array.prototype.set.call( buffer, buf, pos ) } } else if (!Buffer.isBuffer(buf)) { throw new TypeError('"list" argument must be an Array of Buffers') } else { buf.copy(buffer, pos) } pos += buf.length } return buffer } function byteLength (string, encoding) { if (Buffer.isBuffer(string)) { return string.length } if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) { return string.byteLength } if (typeof string !== 'string') { throw new TypeError( 'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' + 'Received type ' + typeof string ) } const len = string.length const mustMatch = (arguments.length > 2 && arguments[2] === true) if (!mustMatch && len === 0) return 0 // Use a for loop to avoid recursion let loweredCase = false for (;;) { switch (encoding) { case 'ascii': case 'latin1': case 'binary': return len case 'utf8': case 'utf-8': 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 mustMatch ? -1 : utf8ToBytes(string).length // assume utf8 } encoding = ('' + encoding).toLowerCase() loweredCase = true } } } Buffer.byteLength = byteLength function slowToString (encoding, start, end) { let 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 } } } // This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) // to detect a Buffer instance. It's not possible to use `instanceof Buffer` // reliably in a browserify context because there could be multiple different // copies of the 'buffer' package in use. This method works even for Buffer // instances that were created from another copy of the `buffer` package. // See: https://github.com/feross/buffer/issues/154 Buffer.prototype._isBuffer = true function swap (b, n, m) { const i = b[n] b[n] = b[m] b[m] = i } Buffer.prototype.swap16 = function swap16 () { const len = this.length if (len % 2 !== 0) { throw new RangeError('Buffer size must be a multiple of 16-bits') } for (let i = 0; i < len; i += 2) { swap(this, i, i + 1) } return this } Buffer.prototype.swap32 = function swap32 () { const len = this.length if (len % 4 !== 0) { throw new RangeError('Buffer size must be a multiple of 32-bits') } for (let i = 0; i < len; i += 4) { swap(this, i, i + 3) swap(this, i + 1, i + 2) } return this } Buffer.prototype.swap64 = function swap64 () { const len = this.length if (len % 8 !== 0) { throw new RangeError('Buffer size must be a multiple of 64-bits') } for (let 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 () { const length = this.length if (length === 0) return '' if (arguments.length === 0) return utf8Slice(this, 0, length) return slowToString.apply(this, arguments) } Buffer.prototype.toLocaleString = Buffer.prototype.toString Buffer.prototype.equals = function equals (b) { if (!Buffer.isBuffer(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 () { let str = '' const max = exports.INSPECT_MAX_BYTES str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim() if (this.length > max) str += ' ... ' return '' } if (customInspectSymbol) { Buffer.prototype[customInspectSymbol] = Buffer.prototype.inspect } Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { if (isInstance(target, Uint8Array)) { target = Buffer.from(target, target.offset, target.byteLength) } if (!Buffer.isBuffer(target)) { throw new TypeError( 'The "target" argument must be one of type Buffer or Uint8Array. ' + 'Received type ' + (typeof target) ) } 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 let x = thisEnd - thisStart let y = end - start const len = Math.min(x, y) const thisCopy = this.slice(thisStart, thisEnd) const targetCopy = target.slice(start, end) for (let 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 (numberIsNaN(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 (Buffer.isBuffer(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 (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) { let indexSize = 1 let arrLength = arr.length let 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) } } let i if (dir) { let 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--) { let found = true for (let 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 const remaining = buf.length - offset if (!length) { length = remaining } else { length = Number(length) if (length > remaining) { length = remaining } } const strLen = string.length if (length > strLen / 2) { length = strLen / 2 } let i for (i = 0; i < length; ++i) { const parsed = parseInt(string.substr(i * 2, 2), 16) if (numberIsNaN(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 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 } } else { throw new Error( 'Buffer.write(string, encoding, offset[, length]) is no longer supported' ) } const 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' let 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': case 'latin1': case 'binary': return asciiWrite(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 base64.fromByteArray(buf) } else { return base64.fromByteArray(buf.slice(start, end)) } } function utf8Slice (buf, start, end) { end = Math.min(buf.length, end) const res = [] let i = start while (i < end) { const firstByte = buf[i] let codePoint = null let bytesPerSequence = (firstByte > 0xEF) ? 4 : (firstByte > 0xDF) ? 3 : (firstByte > 0xBF) ? 2 : 1 if (i + bytesPerSequence <= end) { let 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 const MAX_ARGUMENTS_LENGTH = 0x1000 function decodeCodePointsArray (codePoints) { const 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". let res = '' let i = 0 while (i < len) { res += String.fromCharCode.apply( String, codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) ) } return res } function asciiSlice (buf, start, end) { let ret = '' end = Math.min(buf.length, end) for (let i = start; i < end; ++i) { ret += String.fromCharCode(buf[i] & 0x7F) } return ret } function latin1Slice (buf, start, end) { let ret = '' end = Math.min(buf.length, end) for (let i = start; i < end; ++i) { ret += String.fromCharCode(buf[i]) } return ret } function hexSlice (buf, start, end) { const len = buf.length if (!start || start < 0) start = 0 if (!end || end < 0 || end > len) end = len let out = '' for (let i = start; i < end; ++i) { out += hexSliceLookupTable[buf[i]] } return out } function utf16leSlice (buf, start, end) { const bytes = buf.slice(start, end) let res = '' // If bytes.length is odd, the last 8 bits must be ignored (same as node.js) for (let i = 0; i < bytes.length - 1; i += 2) { res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) } return res } Buffer.prototype.slice = function slice (start, end) { const 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 const newBuf = this.subarray(start, end) // Return an augmented `Uint8Array` instance Object.setPrototypeOf(newBuf, Buffer.prototype) 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 = Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { offset = offset >>> 0 byteLength = byteLength >>> 0 if (!noAssert) checkOffset(offset, byteLength, this.length) let val = this[offset] let mul = 1 let i = 0 while (++i < byteLength && (mul *= 0x100)) { val += this[offset + i] * mul } return val } Buffer.prototype.readUintBE = Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { offset = offset >>> 0 byteLength = byteLength >>> 0 if (!noAssert) { checkOffset(offset, byteLength, this.length) } let val = this[offset + --byteLength] let mul = 1 while (byteLength > 0 && (mul *= 0x100)) { val += this[offset + --byteLength] * mul } return val } Buffer.prototype.readUint8 = Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 1, this.length) return this[offset] } Buffer.prototype.readUint16LE = Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 2, this.length) return this[offset] | (this[offset + 1] << 8) } Buffer.prototype.readUint16BE = Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 2, this.length) return (this[offset] << 8) | this[offset + 1] } Buffer.prototype.readUint32LE = Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { offset = offset >>> 0 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 = Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 4, this.length) return (this[offset] * 0x1000000) + ((this[offset + 1] << 16) | (this[offset + 2] << 8) | this[offset + 3]) } Buffer.prototype.readBigUInt64LE = defineBigIntMethod(function readBigUInt64LE (offset) { offset = 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) << BigInt(32)) }) Buffer.prototype.readBigUInt64BE = defineBigIntMethod(function readBigUInt64BE (offset) { offset = 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) << BigInt(32)) + BigInt(lo) }) Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { offset = offset >>> 0 byteLength = byteLength >>> 0 if (!noAssert) checkOffset(offset, byteLength, this.length) let val = this[offset] let mul = 1 let 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) let i = byteLength let mul = 1 let 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) { offset = offset >>> 0 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) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 2, this.length) const val = this[offset] | (this[offset + 1] << 8) return (val & 0x8000) ? val | 0xFFFF0000 : val } Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 2, this.length) const val = this[offset + 1] | (this[offset] << 8) return (val & 0x8000) ? val | 0xFFFF0000 : val } Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { offset = offset >>> 0 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) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 4, this.length) return (this[offset] << 24) | (this[offset + 1] << 16) | (this[offset + 2] << 8) | (this[offset + 3]) } Buffer.prototype.readBigInt64LE = defineBigIntMethod(function readBigInt64LE (offset) { offset = 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) << BigInt(32)) + BigInt(first + this[++offset] * 2 ** 8 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 24) }) Buffer.prototype.readBigInt64BE = defineBigIntMethod(function readBigInt64BE (offset) { offset = 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) << BigInt(32)) + BigInt(this[++offset] * 2 ** 24 + this[++offset] * 2 ** 16 + this[++offset] * 2 ** 8 + last) }) Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 4, this.length) return ieee754.read(this, offset, true, 23, 4) } Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 4, this.length) return ieee754.read(this, offset, false, 23, 4) } Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 8, this.length) return ieee754.read(this, offset, true, 52, 8) } Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { offset = offset >>> 0 if (!noAssert) checkOffset(offset, 8, this.length) return ieee754.read(this, offset, false, 52, 8) } function checkInt (buf, value, offset, ext, max, min) { if (!Buffer.isBuffer(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 = Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { value = +value offset = offset >>> 0 byteLength = byteLength >>> 0 if (!noAssert) { const maxBytes = Math.pow(2, 8 * byteLength) - 1 checkInt(this, value, offset, byteLength, maxBytes, 0) } let mul = 1 let i = 0 this[offset] = value & 0xFF while (++i < byteLength && (mul *= 0x100)) { this[offset + i] = (value / mul) & 0xFF } return offset + byteLength } Buffer.prototype.writeUintBE = Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { value = +value offset = offset >>> 0 byteLength = byteLength >>> 0 if (!noAssert) { const maxBytes = Math.pow(2, 8 * byteLength) - 1 checkInt(this, value, offset, byteLength, maxBytes, 0) } let i = byteLength - 1 let mul = 1 this[offset + i] = value & 0xFF while (--i >= 0 && (mul *= 0x100)) { this[offset + i] = (value / mul) & 0xFF } return offset + byteLength } Buffer.prototype.writeUint8 = Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { value = +value offset = offset >>> 0 if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) this[offset] = (value & 0xff) return offset + 1 } Buffer.prototype.writeUint16LE = Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { value = +value offset = offset >>> 0 if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) this[offset] = (value & 0xff) this[offset + 1] = (value >>> 8) return offset + 2 } Buffer.prototype.writeUint16BE = Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { value = +value offset = offset >>> 0 if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) this[offset] = (value >>> 8) this[offset + 1] = (value & 0xff) return offset + 2 } Buffer.prototype.writeUint32LE = Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { value = +value offset = offset >>> 0 if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) this[offset + 3] = (value >>> 24) this[offset + 2] = (value >>> 16) this[offset + 1] = (value >>> 8) this[offset] = (value & 0xff) return offset + 4 } Buffer.prototype.writeUint32BE = Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { value = +value offset = offset >>> 0 if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) this[offset] = (value >>> 24) this[offset + 1] = (value >>> 16) this[offset + 2] = (value >>> 8) this[offset + 3] = (value & 0xff) return offset + 4 } function wrtBigUInt64LE (buf, value, offset, min, max) { checkIntBI(value, min, max, buf, offset, 7) let lo = Number(value & BigInt(0xffffffff)) 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 >> BigInt(32) & BigInt(0xffffffff)) buf[offset++] = hi hi = hi >> 8 buf[offset++] = hi hi = hi >> 8 buf[offset++] = hi hi = hi >> 8 buf[offset++] = hi return offset } function wrtBigUInt64BE (buf, value, offset, min, max) { checkIntBI(value, min, max, buf, offset, 7) let lo = Number(value & BigInt(0xffffffff)) 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 >> BigInt(32) & BigInt(0xffffffff)) 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 } Buffer.prototype.writeBigUInt64LE = defineBigIntMethod(function writeBigUInt64LE (value, offset = 0) { return wrtBigUInt64LE(this, value, offset, BigInt(0), BigInt('0xffffffffffffffff')) }) Buffer.prototype.writeBigUInt64BE = defineBigIntMethod(function writeBigUInt64BE (value, offset = 0) { return wrtBigUInt64BE(this, value, offset, BigInt(0), BigInt('0xffffffffffffffff')) }) Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { value = +value offset = offset >>> 0 if (!noAssert) { const limit = Math.pow(2, (8 * byteLength) - 1) checkInt(this, value, offset, byteLength, limit - 1, -limit) } let i = 0 let mul = 1 let 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) { const limit = Math.pow(2, (8 * byteLength) - 1) checkInt(this, value, offset, byteLength, limit - 1, -limit) } let i = byteLength - 1 let mul = 1 let 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 (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) this[offset] = (value & 0xff) this[offset + 1] = (value >>> 8) 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) this[offset] = (value >>> 8) this[offset + 1] = (value & 0xff) 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) this[offset] = (value & 0xff) this[offset + 1] = (value >>> 8) this[offset + 2] = (value >>> 16) this[offset + 3] = (value >>> 24) 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 this[offset] = (value >>> 24) this[offset + 1] = (value >>> 16) this[offset + 2] = (value >>> 8) this[offset + 3] = (value & 0xff) return offset + 4 } Buffer.prototype.writeBigInt64LE = defineBigIntMethod(function writeBigInt64LE (value, offset = 0) { return wrtBigUInt64LE(this, value, offset, -BigInt('0x8000000000000000'), BigInt('0x7fffffffffffffff')) }) Buffer.prototype.writeBigInt64BE = defineBigIntMethod(function writeBigInt64BE (value, offset = 0) { return wrtBigUInt64BE(this, value, offset, -BigInt('0x8000000000000000'), BigInt('0x7fffffffffffffff')) }) 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) { value = +value offset = offset >>> 0 if (!noAssert) { checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) } ieee754.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) { value = +value offset = offset >>> 0 if (!noAssert) { checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) } ieee754.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 (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer') 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('Index out of range') 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 } const len = end - start if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') { // Use built-in when available, missing from IE11 this.copyWithin(targetStart, start, end) } else { Uint8Array.prototype.set.call( target, this.subarray(start, end), 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 (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) } if (val.length === 1) { const code = val.charCodeAt(0) if ((encoding === 'utf8' && code < 128) || encoding === 'latin1') { // Fast path: If `val` fits into a single byte, use that numeric value. val = code } } } else if (typeof val === 'number') { val = val & 255 } else if (typeof val === 'boolean') { val = Number(val) } // 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 let i if (typeof val === 'number') { for (i = start; i < end; ++i) { this[i] = val } } else { const bytes = Buffer.isBuffer(val) ? val : Buffer.from(val, encoding) const len = bytes.length if (len === 0) { throw new TypeError('The value "' + val + '" is invalid for argument "value"') } for (i = 0; i < end - start; ++i) { this[i + start] = bytes[i % len] } } return this } // CUSTOM ERRORS // ============= // Simplified versions from Node, changed for Buffer-only usage const errors = {} function E (sym, getMessage, Base) { errors[sym] = class NodeError extends Base { constructor () { super() Object.defineProperty(this, 'message', { value: getMessage.apply(this, arguments), writable: true, configurable: true }) // Add the error code to the name to include it in the stack trace. this.name = `${this.name} [${sym}]` // Access the stack to generate the error message including the error code // from the name. this.stack // eslint-disable-line no-unused-expressions // Reset the name to the actual name. delete this.name } get code () { return sym } set code (value) { Object.defineProperty(this, 'code', { configurable: true, enumerable: true, value, writable: true }) } toString () { return `${this.name} [${sym}]: ${this.message}` } } } E('ERR_BUFFER_OUT_OF_BOUNDS', function (name) { if (name) { return `${name} is outside of buffer bounds` } return 'Attempt to access memory outside buffer bounds' }, RangeError) E('ERR_INVALID_ARG_TYPE', function (name, actual) { return `The "${name}" argument must be of type number. Received type ${typeof actual}` }, TypeError) E('ERR_OUT_OF_RANGE', function (str, range, input) { let msg = `The value of "${str}" is out of range.` let received = input if (Number.isInteger(input) && Math.abs(input) > 2 ** 32) { received = addNumericalSeparator(String(input)) } else if (typeof input === 'bigint') { received = String(input) if (input > BigInt(2) ** BigInt(32) || input < -(BigInt(2) ** BigInt(32))) { received = addNumericalSeparator(received) } received += 'n' } msg += ` It must be ${range}. Received ${received}` return msg }, RangeError) function addNumericalSeparator (val) { let res = '' let i = val.length const start = val[0] === '-' ? 1 : 0 for (; i >= start + 4; i -= 3) { res = `_${val.slice(i - 3, i)}${res}` } return `${val.slice(0, i)}${res}` } // CHECK FUNCTIONS // =============== function checkBounds (buf, offset, byteLength) { validateNumber(offset, 'offset') if (buf[offset] === undefined || buf[offset + byteLength] === undefined) { boundsError(offset, buf.length - (byteLength + 1)) } } function checkIntBI (value, min, max, buf, offset, byteLength) { if (value > max || value < min) { const n = typeof min === 'bigint' ? 'n' : '' let range if (byteLength > 3) { if (min === 0 || min === BigInt(0)) { range = `>= 0${n} and < 2${n} ** ${(byteLength + 1) * 8}${n}` } else { range = `>= -(2${n} ** ${(byteLength + 1) * 8 - 1}${n}) and < 2 ** ` + `${(byteLength + 1) * 8 - 1}${n}` } } else { range = `>= ${min}${n} and <= ${max}${n}` } throw new errors.ERR_OUT_OF_RANGE('value', range, value) } checkBounds(buf, offset, byteLength) } function validateNumber (value, name) { if (typeof value !== 'number') { throw new errors.ERR_INVALID_ARG_TYPE(name, 'number', value) } } function boundsError (value, length, type) { if (Math.floor(value) !== value) { validateNumber(value, type) throw new errors.ERR_OUT_OF_RANGE(type || 'offset', 'an integer', value) } if (length < 0) { throw new errors.ERR_BUFFER_OUT_OF_BOUNDS() } throw new errors.ERR_OUT_OF_RANGE(type || 'offset', `>= ${type ? 1 : 0} and <= ${length}`, value) } // HELPER FUNCTIONS // ================ const INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g function base64clean (str) { // Node takes equal signs as end of the Base64 encoding str = str.split('=')[0] // Node strips out invalid characters like \n and \t from the string, base64-js does not str = str.trim().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 utf8ToBytes (string, units) { units = units || Infinity let codePoint const length = string.length let leadSurrogate = null const bytes = [] for (let 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) { const byteArray = [] for (let 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) { let c, hi, lo const byteArray = [] for (let 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 base64.toByteArray(base64clean(str)) } function blitBuffer (src, dst, offset, length) { let i for (i = 0; i < length; ++i) { if ((i + offset >= dst.length) || (i >= src.length)) break dst[i + offset] = src[i] } return i } // ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass // the `instanceof` check but they should be treated as of that type. // See: https://github.com/feross/buffer/issues/166 function isInstance (obj, type) { return obj instanceof type || (obj != null && obj.constructor != null && obj.constructor.name != null && obj.constructor.name === type.name) } function numberIsNaN (obj) { // For IE11 support return obj !== obj // eslint-disable-line no-self-compare } // Create lookup table for `toString('hex')` // See: https://github.com/feross/buffer/issues/219 const hexSliceLookupTable = (function () { const alphabet = '0123456789abcdef' const table = new Array(256) for (let i = 0; i < 16; ++i) { const i16 = i * 16 for (let j = 0; j < 16; ++j) { table[i16 + j] = alphabet[i] + alphabet[j] } } return table })() // Return not function with Error if BigInt not supported function defineBigIntMethod (fn) { return typeof BigInt === 'undefined' ? BufferBigIntNotDefined : fn } function BufferBigIntNotDefined () { throw new Error('BigInt not supported') } }, 32932(module) { (function webpackUniversalModuleDefinition(root, factory) { /* istanbul ignore next */ if(true) module.exports = factory(); else {} })(this, function() { return /******/ (function(modules) { // webpackBootstrap /******/ // The module cache /******/ var installedModules = {}; /******/ // The require function /******/ function __nested_webpack_require_583__(moduleId) { /******/ // Check if module is in cache /* istanbul ignore if */ /******/ if(installedModules[moduleId]) /******/ return installedModules[moduleId].exports; /******/ // Create a new module (and put it into the cache) /******/ var module = installedModules[moduleId] = { /******/ exports: {}, /******/ id: moduleId, /******/ loaded: false /******/ }; /******/ // Execute the module function /******/ modules[moduleId].call(module.exports, module, module.exports, __nested_webpack_require_583__); /******/ // Flag the module as loaded /******/ module.loaded = true; /******/ // Return the exports of the module /******/ return module.exports; /******/ } /******/ // expose the modules object (__webpack_modules__) /******/ __nested_webpack_require_583__.m = modules; /******/ // expose the module cache /******/ __nested_webpack_require_583__.c = installedModules; /******/ // __webpack_public_path__ /******/ __nested_webpack_require_583__.p = ""; /******/ // Load entry module and return exports /******/ return __nested_webpack_require_583__(0); /******/ }) /************************************************************************/ /******/ ([ /* 0 */ /***/ function(module, exports, __nested_webpack_require_1808_1827__) { "use strict"; /* Copyright JS Foundation and other contributors, https://js.foundation/ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ Object.defineProperty(exports, "__esModule", { value: true }); var comment_handler_1 = __nested_webpack_require_1808_1827__(1); var jsx_parser_1 = __nested_webpack_require_1808_1827__(3); var parser_1 = __nested_webpack_require_1808_1827__(8); var tokenizer_1 = __nested_webpack_require_1808_1827__(15); function parse(code, options, delegate) { var commentHandler = null; var proxyDelegate = function (node, metadata) { if (delegate) { delegate(node, metadata); } if (commentHandler) { commentHandler.visit(node, metadata); } }; var parserDelegate = (typeof delegate === 'function') ? proxyDelegate : null; var collectComment = false; if (options) { collectComment = (typeof options.comment === 'boolean' && options.comment); var attachComment = (typeof options.attachComment === 'boolean' && options.attachComment); if (collectComment || attachComment) { commentHandler = new comment_handler_1.CommentHandler(); commentHandler.attach = attachComment; options.comment = true; parserDelegate = proxyDelegate; } } var isModule = false; if (options && typeof options.sourceType === 'string') { isModule = (options.sourceType === 'module'); } var parser; if (options && typeof options.jsx === 'boolean' && options.jsx) { parser = new jsx_parser_1.JSXParser(code, options, parserDelegate); } else { parser = new parser_1.Parser(code, options, parserDelegate); } var program = isModule ? parser.parseModule() : parser.parseScript(); var ast = program; if (collectComment && commentHandler) { ast.comments = commentHandler.comments; } if (parser.config.tokens) { ast.tokens = parser.tokens; } if (parser.config.tolerant) { ast.errors = parser.errorHandler.errors; } return ast; } exports.parse = parse; function parseModule(code, options, delegate) { var parsingOptions = options || {}; parsingOptions.sourceType = 'module'; return parse(code, parsingOptions, delegate); } exports.parseModule = parseModule; function parseScript(code, options, delegate) { var parsingOptions = options || {}; parsingOptions.sourceType = 'script'; return parse(code, parsingOptions, delegate); } exports.parseScript = parseScript; function tokenize(code, options, delegate) { var tokenizer = new tokenizer_1.Tokenizer(code, options); var tokens; tokens = []; try { while (true) { var token = tokenizer.getNextToken(); if (!token) { break; } if (delegate) { token = delegate(token); } tokens.push(token); } } catch (e) { tokenizer.errorHandler.tolerate(e); } if (tokenizer.errorHandler.tolerant) { tokens.errors = tokenizer.errors(); } return tokens; } exports.tokenize = tokenize; var syntax_1 = __nested_webpack_require_1808_1827__(2); exports.Syntax = syntax_1.Syntax; // Sync with *.json manifests. exports.version = '4.0.1'; /***/ }, /* 1 */ /***/ function(module, exports, __nested_webpack_require_6456_6475__) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var syntax_1 = __nested_webpack_require_6456_6475__(2); var CommentHandler = (function () { function CommentHandler() { this.attach = false; this.comments = []; this.stack = []; this.leading = []; this.trailing = []; } CommentHandler.prototype.insertInnerComments = function (node, metadata) { // innnerComments for properties empty block // `function a() {/** comments **\/}` if (node.type === syntax_1.Syntax.BlockStatement && node.body.length === 0) { var innerComments = []; for (var i = this.leading.length - 1; i >= 0; --i) { var entry = this.leading[i]; if (metadata.end.offset >= entry.start) { innerComments.unshift(entry.comment); this.leading.splice(i, 1); this.trailing.splice(i, 1); } } if (innerComments.length) { node.innerComments = innerComments; } } }; CommentHandler.prototype.findTrailingComments = function (metadata) { var trailingComments = []; if (this.trailing.length > 0) { for (var i = this.trailing.length - 1; i >= 0; --i) { var entry_1 = this.trailing[i]; if (entry_1.start >= metadata.end.offset) { trailingComments.unshift(entry_1.comment); } } this.trailing.length = 0; return trailingComments; } var entry = this.stack[this.stack.length - 1]; if (entry && entry.node.trailingComments) { var firstComment = entry.node.trailingComments[0]; if (firstComment && firstComment.range[0] >= metadata.end.offset) { trailingComments = entry.node.trailingComments; delete entry.node.trailingComments; } } return trailingComments; }; CommentHandler.prototype.findLeadingComments = function (metadata) { var leadingComments = []; var target; while (this.stack.length > 0) { var entry = this.stack[this.stack.length - 1]; if (entry && entry.start >= metadata.start.offset) { target = entry.node; this.stack.pop(); } else { break; } } if (target) { var count = target.leadingComments ? target.leadingComments.length : 0; for (var i = count - 1; i >= 0; --i) { var comment = target.leadingComments[i]; if (comment.range[1] <= metadata.start.offset) { leadingComments.unshift(comment); target.leadingComments.splice(i, 1); } } if (target.leadingComments && target.leadingComments.length === 0) { delete target.leadingComments; } return leadingComments; } for (var i = this.leading.length - 1; i >= 0; --i) { var entry = this.leading[i]; if (entry.start <= metadata.start.offset) { leadingComments.unshift(entry.comment); this.leading.splice(i, 1); } } return leadingComments; }; CommentHandler.prototype.visitNode = function (node, metadata) { if (node.type === syntax_1.Syntax.Program && node.body.length > 0) { return; } this.insertInnerComments(node, metadata); var trailingComments = this.findTrailingComments(metadata); var leadingComments = this.findLeadingComments(metadata); if (leadingComments.length > 0) { node.leadingComments = leadingComments; } if (trailingComments.length > 0) { node.trailingComments = trailingComments; } this.stack.push({ node: node, start: metadata.start.offset }); }; CommentHandler.prototype.visitComment = function (node, metadata) { var type = (node.type[0] === 'L') ? 'Line' : 'Block'; var comment = { type: type, value: node.value }; if (node.range) { comment.range = node.range; } if (node.loc) { comment.loc = node.loc; } this.comments.push(comment); if (this.attach) { var entry = { comment: { type: type, value: node.value, range: [metadata.start.offset, metadata.end.offset] }, start: metadata.start.offset }; if (node.loc) { entry.comment.loc = node.loc; } node.type = type; this.leading.push(entry); this.trailing.push(entry); } }; CommentHandler.prototype.visit = function (node, metadata) { if (node.type === 'LineComment') { this.visitComment(node, metadata); } else if (node.type === 'BlockComment') { this.visitComment(node, metadata); } else if (this.attach) { this.visitNode(node, metadata); } }; return CommentHandler; }()); exports.CommentHandler = CommentHandler; /***/ }, /* 2 */ /***/ function(module, exports) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.Syntax = { AssignmentExpression: 'AssignmentExpression', AssignmentPattern: 'AssignmentPattern', ArrayExpression: 'ArrayExpression', ArrayPattern: 'ArrayPattern', ArrowFunctionExpression: 'ArrowFunctionExpression', AwaitExpression: 'AwaitExpression', BlockStatement: 'BlockStatement', BinaryExpression: 'BinaryExpression', BreakStatement: 'BreakStatement', CallExpression: 'CallExpression', CatchClause: 'CatchClause', ClassBody: 'ClassBody', ClassDeclaration: 'ClassDeclaration', ClassExpression: 'ClassExpression', ConditionalExpression: 'ConditionalExpression', ContinueStatement: 'ContinueStatement', DoWhileStatement: 'DoWhileStatement', DebuggerStatement: 'DebuggerStatement', EmptyStatement: 'EmptyStatement', ExportAllDeclaration: 'ExportAllDeclaration', ExportDefaultDeclaration: 'ExportDefaultDeclaration', ExportNamedDeclaration: 'ExportNamedDeclaration', ExportSpecifier: 'ExportSpecifier', ExpressionStatement: 'ExpressionStatement', ForStatement: 'ForStatement', ForOfStatement: 'ForOfStatement', ForInStatement: 'ForInStatement', FunctionDeclaration: 'FunctionDeclaration', FunctionExpression: 'FunctionExpression', Identifier: 'Identifier', IfStatement: 'IfStatement', ImportDeclaration: 'ImportDeclaration', ImportDefaultSpecifier: 'ImportDefaultSpecifier', ImportNamespaceSpecifier: 'ImportNamespaceSpecifier', ImportSpecifier: 'ImportSpecifier', Literal: 'Literal', LabeledStatement: 'LabeledStatement', LogicalExpression: 'LogicalExpression', MemberExpression: 'MemberExpression', MetaProperty: 'MetaProperty', MethodDefinition: 'MethodDefinition', NewExpression: 'NewExpression', ObjectExpression: 'ObjectExpression', ObjectPattern: 'ObjectPattern', Program: 'Program', Property: 'Property', RestElement: 'RestElement', ReturnStatement: 'ReturnStatement', SequenceExpression: 'SequenceExpression', SpreadElement: 'SpreadElement', Super: 'Super', SwitchCase: 'SwitchCase', SwitchStatement: 'SwitchStatement', TaggedTemplateExpression: 'TaggedTemplateExpression', TemplateElement: 'TemplateElement', TemplateLiteral: 'TemplateLiteral', ThisExpression: 'ThisExpression', ThrowStatement: 'ThrowStatement', TryStatement: 'TryStatement', UnaryExpression: 'UnaryExpression', UpdateExpression: 'UpdateExpression', VariableDeclaration: 'VariableDeclaration', VariableDeclarator: 'VariableDeclarator', WhileStatement: 'WhileStatement', WithStatement: 'WithStatement', YieldExpression: 'YieldExpression' }; /***/ }, /* 3 */ /***/ function(module, exports, __nested_webpack_require_15019_15038__) { "use strict"; /* istanbul ignore next */ var __extends = (this && this.__extends) || (function () { var extendStatics = Object.setPrototypeOf || ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; return function (d, b) { extendStatics(d, b); function __() { this.constructor = d; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); }; })(); Object.defineProperty(exports, "__esModule", { value: true }); var character_1 = __nested_webpack_require_15019_15038__(4); var JSXNode = __nested_webpack_require_15019_15038__(5); var jsx_syntax_1 = __nested_webpack_require_15019_15038__(6); var Node = __nested_webpack_require_15019_15038__(7); var parser_1 = __nested_webpack_require_15019_15038__(8); var token_1 = __nested_webpack_require_15019_15038__(13); var xhtml_entities_1 = __nested_webpack_require_15019_15038__(14); token_1.TokenName[100 /* Identifier */] = 'JSXIdentifier'; token_1.TokenName[101 /* Text */] = 'JSXText'; // Fully qualified element name, e.g. returns "svg:path" function getQualifiedElementName(elementName) { var qualifiedName; switch (elementName.type) { case jsx_syntax_1.JSXSyntax.JSXIdentifier: var id = elementName; qualifiedName = id.name; break; case jsx_syntax_1.JSXSyntax.JSXNamespacedName: var ns = elementName; qualifiedName = getQualifiedElementName(ns.namespace) + ':' + getQualifiedElementName(ns.name); break; case jsx_syntax_1.JSXSyntax.JSXMemberExpression: var expr = elementName; qualifiedName = getQualifiedElementName(expr.object) + '.' + getQualifiedElementName(expr.property); break; /* istanbul ignore next */ default: break; } return qualifiedName; } var JSXParser = (function (_super) { __extends(JSXParser, _super); function JSXParser(code, options, delegate) { return _super.call(this, code, options, delegate) || this; } JSXParser.prototype.parsePrimaryExpression = function () { return this.match('<') ? this.parseJSXRoot() : _super.prototype.parsePrimaryExpression.call(this); }; JSXParser.prototype.startJSX = function () { // Unwind the scanner before the lookahead token. this.scanner.index = this.startMarker.index; this.scanner.lineNumber = this.startMarker.line; this.scanner.lineStart = this.startMarker.index - this.startMarker.column; }; JSXParser.prototype.finishJSX = function () { // Prime the next lookahead. this.nextToken(); }; JSXParser.prototype.reenterJSX = function () { this.startJSX(); this.expectJSX('}'); // Pop the closing '}' added from the lookahead. if (this.config.tokens) { this.tokens.pop(); } }; JSXParser.prototype.createJSXNode = function () { this.collectComments(); return { index: this.scanner.index, line: this.scanner.lineNumber, column: this.scanner.index - this.scanner.lineStart }; }; JSXParser.prototype.createJSXChildNode = function () { return { index: this.scanner.index, line: this.scanner.lineNumber, column: this.scanner.index - this.scanner.lineStart }; }; JSXParser.prototype.scanXHTMLEntity = function (quote) { var result = '&'; var valid = true; var terminated = false; var numeric = false; var hex = false; while (!this.scanner.eof() && valid && !terminated) { var ch = this.scanner.source[this.scanner.index]; if (ch === quote) { break; } terminated = (ch === ';'); result += ch; ++this.scanner.index; if (!terminated) { switch (result.length) { case 2: // e.g. '{' numeric = (ch === '#'); break; case 3: if (numeric) { // e.g. 'A' hex = (ch === 'x'); valid = hex || character_1.Character.isDecimalDigit(ch.charCodeAt(0)); numeric = numeric && !hex; } break; default: valid = valid && !(numeric && !character_1.Character.isDecimalDigit(ch.charCodeAt(0))); valid = valid && !(hex && !character_1.Character.isHexDigit(ch.charCodeAt(0))); break; } } } if (valid && terminated && result.length > 2) { // e.g. 'A' becomes just '#x41' var str = result.substr(1, result.length - 2); if (numeric && str.length > 1) { result = String.fromCharCode(parseInt(str.substr(1), 10)); } else if (hex && str.length > 2) { result = String.fromCharCode(parseInt('0' + str.substr(1), 16)); } else if (!numeric && !hex && xhtml_entities_1.XHTMLEntities[str]) { result = xhtml_entities_1.XHTMLEntities[str]; } } return result; }; // Scan the next JSX token. This replaces Scanner#lex when in JSX mode. JSXParser.prototype.lexJSX = function () { var cp = this.scanner.source.charCodeAt(this.scanner.index); // < > / : = { } if (cp === 60 || cp === 62 || cp === 47 || cp === 58 || cp === 61 || cp === 123 || cp === 125) { var value = this.scanner.source[this.scanner.index++]; return { type: 7 /* Punctuator */, value: value, lineNumber: this.scanner.lineNumber, lineStart: this.scanner.lineStart, start: this.scanner.index - 1, end: this.scanner.index }; } // " ' if (cp === 34 || cp === 39) { var start = this.scanner.index; var quote = this.scanner.source[this.scanner.index++]; var str = ''; while (!this.scanner.eof()) { var ch = this.scanner.source[this.scanner.index++]; if (ch === quote) { break; } else if (ch === '&') { str += this.scanXHTMLEntity(quote); } else { str += ch; } } return { type: 8 /* StringLiteral */, value: str, lineNumber: this.scanner.lineNumber, lineStart: this.scanner.lineStart, start: start, end: this.scanner.index }; } // ... or . if (cp === 46) { var n1 = this.scanner.source.charCodeAt(this.scanner.index + 1); var n2 = this.scanner.source.charCodeAt(this.scanner.index + 2); var value = (n1 === 46 && n2 === 46) ? '...' : '.'; var start = this.scanner.index; this.scanner.index += value.length; return { type: 7 /* Punctuator */, value: value, lineNumber: this.scanner.lineNumber, lineStart: this.scanner.lineStart, start: start, end: this.scanner.index }; } // ` if (cp === 96) { // Only placeholder, since it will be rescanned as a real assignment expression. return { type: 10 /* Template */, value: '', lineNumber: this.scanner.lineNumber, lineStart: this.scanner.lineStart, start: this.scanner.index, end: this.scanner.index }; } // Identifer can not contain backslash (char code 92). if (character_1.Character.isIdentifierStart(cp) && (cp !== 92)) { var start = this.scanner.index; ++this.scanner.index; while (!this.scanner.eof()) { var ch = this.scanner.source.charCodeAt(this.scanner.index); if (character_1.Character.isIdentifierPart(ch) && (ch !== 92)) { ++this.scanner.index; } else if (ch === 45) { // Hyphen (char code 45) can be part of an identifier. ++this.scanner.index; } else { break; } } var id = this.scanner.source.slice(start, this.scanner.index); return { type: 100 /* Identifier */, value: id, lineNumber: this.scanner.lineNumber, lineStart: this.scanner.lineStart, start: start, end: this.scanner.index }; } return this.scanner.lex(); }; JSXParser.prototype.nextJSXToken = function () { this.collectComments(); this.startMarker.index = this.scanner.index; this.startMarker.line = this.scanner.lineNumber; this.startMarker.column = this.scanner.index - this.scanner.lineStart; var token = this.lexJSX(); this.lastMarker.index = this.scanner.index; this.lastMarker.line = this.scanner.lineNumber; this.lastMarker.column = this.scanner.index - this.scanner.lineStart; if (this.config.tokens) { this.tokens.push(this.convertToken(token)); } return token; }; JSXParser.prototype.nextJSXText = function () { this.startMarker.index = this.scanner.index; this.startMarker.line = this.scanner.lineNumber; this.startMarker.column = this.scanner.index - this.scanner.lineStart; var start = this.scanner.index; var text = ''; while (!this.scanner.eof()) { var ch = this.scanner.source[this.scanner.index]; if (ch === '{' || ch === '<') { break; } ++this.scanner.index; text += ch; if (character_1.Character.isLineTerminator(ch.charCodeAt(0))) { ++this.scanner.lineNumber; if (ch === '\r' && this.scanner.source[this.scanner.index] === '\n') { ++this.scanner.index; } this.scanner.lineStart = this.scanner.index; } } this.lastMarker.index = this.scanner.index; this.lastMarker.line = this.scanner.lineNumber; this.lastMarker.column = this.scanner.index - this.scanner.lineStart; var token = { type: 101 /* Text */, value: text, lineNumber: this.scanner.lineNumber, lineStart: this.scanner.lineStart, start: start, end: this.scanner.index }; if ((text.length > 0) && this.config.tokens) { this.tokens.push(this.convertToken(token)); } return token; }; JSXParser.prototype.peekJSXToken = function () { var state = this.scanner.saveState(); this.scanner.scanComments(); var next = this.lexJSX(); this.scanner.restoreState(state); return next; }; // Expect the next JSX token to match the specified punctuator. // If not, an exception will be thrown. JSXParser.prototype.expectJSX = function (value) { var token = this.nextJSXToken(); if (token.type !== 7 /* Punctuator */ || token.value !== value) { this.throwUnexpectedToken(token); } }; // Return true if the next JSX token matches the specified punctuator. JSXParser.prototype.matchJSX = function (value) { var next = this.peekJSXToken(); return next.type === 7 /* Punctuator */ && next.value === value; }; JSXParser.prototype.parseJSXIdentifier = function () { var node = this.createJSXNode(); var token = this.nextJSXToken(); if (token.type !== 100 /* Identifier */) { this.throwUnexpectedToken(token); } return this.finalize(node, new JSXNode.JSXIdentifier(token.value)); }; JSXParser.prototype.parseJSXElementName = function () { var node = this.createJSXNode(); var elementName = this.parseJSXIdentifier(); if (this.matchJSX(':')) { var namespace = elementName; this.expectJSX(':'); var name_1 = this.parseJSXIdentifier(); elementName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_1)); } else if (this.matchJSX('.')) { while (this.matchJSX('.')) { var object = elementName; this.expectJSX('.'); var property = this.parseJSXIdentifier(); elementName = this.finalize(node, new JSXNode.JSXMemberExpression(object, property)); } } return elementName; }; JSXParser.prototype.parseJSXAttributeName = function () { var node = this.createJSXNode(); var attributeName; var identifier = this.parseJSXIdentifier(); if (this.matchJSX(':')) { var namespace = identifier; this.expectJSX(':'); var name_2 = this.parseJSXIdentifier(); attributeName = this.finalize(node, new JSXNode.JSXNamespacedName(namespace, name_2)); } else { attributeName = identifier; } return attributeName; }; JSXParser.prototype.parseJSXStringLiteralAttribute = function () { var node = this.createJSXNode(); var token = this.nextJSXToken(); if (token.type !== 8 /* StringLiteral */) { this.throwUnexpectedToken(token); } var raw = this.getTokenRaw(token); return this.finalize(node, new Node.Literal(token.value, raw)); }; JSXParser.prototype.parseJSXExpressionAttribute = function () { var node = this.createJSXNode(); this.expectJSX('{'); this.finishJSX(); if (this.match('}')) { this.tolerateError('JSX attributes must only be assigned a non-empty expression'); } var expression = this.parseAssignmentExpression(); this.reenterJSX(); return this.finalize(node, new JSXNode.JSXExpressionContainer(expression)); }; JSXParser.prototype.parseJSXAttributeValue = function () { return this.matchJSX('{') ? this.parseJSXExpressionAttribute() : this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute(); }; JSXParser.prototype.parseJSXNameValueAttribute = function () { var node = this.createJSXNode(); var name = this.parseJSXAttributeName(); var value = null; if (this.matchJSX('=')) { this.expectJSX('='); value = this.parseJSXAttributeValue(); } return this.finalize(node, new JSXNode.JSXAttribute(name, value)); }; JSXParser.prototype.parseJSXSpreadAttribute = function () { var node = this.createJSXNode(); this.expectJSX('{'); this.expectJSX('...'); this.finishJSX(); var argument = this.parseAssignmentExpression(); this.reenterJSX(); return this.finalize(node, new JSXNode.JSXSpreadAttribute(argument)); }; JSXParser.prototype.parseJSXAttributes = function () { var attributes = []; while (!this.matchJSX('/') && !this.matchJSX('>')) { var attribute = this.matchJSX('{') ? this.parseJSXSpreadAttribute() : this.parseJSXNameValueAttribute(); attributes.push(attribute); } return attributes; }; JSXParser.prototype.parseJSXOpeningElement = function () { var node = this.createJSXNode(); this.expectJSX('<'); var name = this.parseJSXElementName(); var attributes = this.parseJSXAttributes(); var selfClosing = this.matchJSX('/'); if (selfClosing) { this.expectJSX('/'); } this.expectJSX('>'); return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes)); }; JSXParser.prototype.parseJSXBoundaryElement = function () { var node = this.createJSXNode(); this.expectJSX('<'); if (this.matchJSX('/')) { this.expectJSX('/'); var name_3 = this.parseJSXElementName(); this.expectJSX('>'); return this.finalize(node, new JSXNode.JSXClosingElement(name_3)); } var name = this.parseJSXElementName(); var attributes = this.parseJSXAttributes(); var selfClosing = this.matchJSX('/'); if (selfClosing) { this.expectJSX('/'); } this.expectJSX('>'); return this.finalize(node, new JSXNode.JSXOpeningElement(name, selfClosing, attributes)); }; JSXParser.prototype.parseJSXEmptyExpression = function () { var node = this.createJSXChildNode(); this.collectComments(); this.lastMarker.index = this.scanner.index; this.lastMarker.line = this.scanner.lineNumber; this.lastMarker.column = this.scanner.index - this.scanner.lineStart; return this.finalize(node, new JSXNode.JSXEmptyExpression()); }; JSXParser.prototype.parseJSXExpressionContainer = function () { var node = this.createJSXNode(); this.expectJSX('{'); var expression; if (this.matchJSX('}')) { expression = this.parseJSXEmptyExpression(); this.expectJSX('}'); } else { this.finishJSX(); expression = this.parseAssignmentExpression(); this.reenterJSX(); } return this.finalize(node, new JSXNode.JSXExpressionContainer(expression)); }; JSXParser.prototype.parseJSXChildren = function () { var children = []; while (!this.scanner.eof()) { var node = this.createJSXChildNode(); var token = this.nextJSXText(); if (token.start < token.end) { var raw = this.getTokenRaw(token); var child = this.finalize(node, new JSXNode.JSXText(token.value, raw)); children.push(child); } if (this.scanner.source[this.scanner.index] === '{') { var container = this.parseJSXExpressionContainer(); children.push(container); } else { break; } } return children; }; JSXParser.prototype.parseComplexJSXElement = function (el) { var stack = []; while (!this.scanner.eof()) { el.children = el.children.concat(this.parseJSXChildren()); var node = this.createJSXChildNode(); var element = this.parseJSXBoundaryElement(); if (element.type === jsx_syntax_1.JSXSyntax.JSXOpeningElement) { var opening = element; if (opening.selfClosing) { var child = this.finalize(node, new JSXNode.JSXElement(opening, [], null)); el.children.push(child); } else { stack.push(el); el = { node: node, opening: opening, closing: null, children: [] }; } } if (element.type === jsx_syntax_1.JSXSyntax.JSXClosingElement) { el.closing = element; var open_1 = getQualifiedElementName(el.opening.name); var close_1 = getQualifiedElementName(el.closing.name); if (open_1 !== close_1) { this.tolerateError('Expected corresponding JSX closing tag for %0', open_1); } if (stack.length > 0) { var child = this.finalize(el.node, new JSXNode.JSXElement(el.opening, el.children, el.closing)); el = stack[stack.length - 1]; el.children.push(child); stack.pop(); } else { break; } } } return el; }; JSXParser.prototype.parseJSXElement = function () { var node = this.createJSXNode(); var opening = this.parseJSXOpeningElement(); var children = []; var closing = null; if (!opening.selfClosing) { var el = this.parseComplexJSXElement({ node: node, opening: opening, closing: closing, children: children }); children = el.children; closing = el.closing; } return this.finalize(node, new JSXNode.JSXElement(opening, children, closing)); }; JSXParser.prototype.parseJSXRoot = function () { // Pop the opening '<' added from the lookahead. if (this.config.tokens) { this.tokens.pop(); } this.startJSX(); var element = this.parseJSXElement(); this.finishJSX(); return element; }; JSXParser.prototype.isStartOfExpression = function () { return _super.prototype.isStartOfExpression.call(this) || this.match('<'); }; return JSXParser; }(parser_1.Parser)); exports.JSXParser = JSXParser; /***/ }, /* 4 */ /***/ function(module, exports) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); // See also tools/generate-unicode-regex.js. var Regex = { // Unicode v8.0.0 NonAsciiIdentifierStart: NonAsciiIdentifierStart: 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// Unicode v8.0.0 NonAsciiIdentifierPart: NonAsciiIdentifierPart: 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}; exports.Character = { /* tslint:disable:no-bitwise */ fromCodePoint: function (cp) { return (cp < 0x10000) ? String.fromCharCode(cp) : String.fromCharCode(0xD800 + ((cp - 0x10000) >> 10)) + String.fromCharCode(0xDC00 + ((cp - 0x10000) & 1023)); }, // https://tc39.github.io/ecma262/#sec-white-space isWhiteSpace: function (cp) { return (cp === 0x20) || (cp === 0x09) || (cp === 0x0B) || (cp === 0x0C) || (cp === 0xA0) || (cp >= 0x1680 && [0x1680, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(cp) >= 0); }, // https://tc39.github.io/ecma262/#sec-line-terminators isLineTerminator: function (cp) { return (cp === 0x0A) || (cp === 0x0D) || (cp === 0x2028) || (cp === 0x2029); }, // https://tc39.github.io/ecma262/#sec-names-and-keywords isIdentifierStart: function (cp) { return (cp === 0x24) || (cp === 0x5F) || (cp >= 0x41 && cp <= 0x5A) || (cp >= 0x61 && cp <= 0x7A) || (cp === 0x5C) || ((cp >= 0x80) && Regex.NonAsciiIdentifierStart.test(exports.Character.fromCodePoint(cp))); }, isIdentifierPart: function (cp) { return (cp === 0x24) || (cp === 0x5F) || (cp >= 0x41 && cp <= 0x5A) || (cp >= 0x61 && cp <= 0x7A) || (cp >= 0x30 && cp <= 0x39) || (cp === 0x5C) || ((cp >= 0x80) && Regex.NonAsciiIdentifierPart.test(exports.Character.fromCodePoint(cp))); }, // https://tc39.github.io/ecma262/#sec-literals-numeric-literals isDecimalDigit: function (cp) { return (cp >= 0x30 && cp <= 0x39); // 0..9 }, isHexDigit: function (cp) { return (cp >= 0x30 && cp <= 0x39) || (cp >= 0x41 && cp <= 0x46) || (cp >= 0x61 && cp <= 0x66); // a..f }, isOctalDigit: function (cp) { return (cp >= 0x30 && cp <= 0x37); // 0..7 } }; /***/ }, /* 5 */ /***/ function(module, exports, __nested_webpack_require_54354_54373__) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var jsx_syntax_1 = __nested_webpack_require_54354_54373__(6); /* tslint:disable:max-classes-per-file */ var JSXClosingElement = (function () { function JSXClosingElement(name) { this.type = jsx_syntax_1.JSXSyntax.JSXClosingElement; this.name = name; } return JSXClosingElement; }()); exports.JSXClosingElement = JSXClosingElement; var JSXElement = (function () { function JSXElement(openingElement, children, closingElement) { this.type = jsx_syntax_1.JSXSyntax.JSXElement; this.openingElement = openingElement; this.children = children; this.closingElement = closingElement; } return JSXElement; }()); exports.JSXElement = JSXElement; var JSXEmptyExpression = (function () { function JSXEmptyExpression() { this.type = jsx_syntax_1.JSXSyntax.JSXEmptyExpression; } return JSXEmptyExpression; }()); exports.JSXEmptyExpression = JSXEmptyExpression; var JSXExpressionContainer = (function () { function JSXExpressionContainer(expression) { this.type = jsx_syntax_1.JSXSyntax.JSXExpressionContainer; this.expression = expression; } return JSXExpressionContainer; }()); exports.JSXExpressionContainer = JSXExpressionContainer; var JSXIdentifier = (function () { function JSXIdentifier(name) { this.type = jsx_syntax_1.JSXSyntax.JSXIdentifier; this.name = name; } return JSXIdentifier; }()); exports.JSXIdentifier = JSXIdentifier; var JSXMemberExpression = (function () { function JSXMemberExpression(object, property) { this.type = jsx_syntax_1.JSXSyntax.JSXMemberExpression; this.object = object; this.property = property; } return JSXMemberExpression; }()); exports.JSXMemberExpression = JSXMemberExpression; var JSXAttribute = (function () { function JSXAttribute(name, value) { this.type = jsx_syntax_1.JSXSyntax.JSXAttribute; this.name = name; this.value = value; } return JSXAttribute; }()); exports.JSXAttribute = JSXAttribute; var JSXNamespacedName = (function () { function JSXNamespacedName(namespace, name) { this.type = jsx_syntax_1.JSXSyntax.JSXNamespacedName; this.namespace = namespace; this.name = name; } return JSXNamespacedName; }()); exports.JSXNamespacedName = JSXNamespacedName; var JSXOpeningElement = (function () { function JSXOpeningElement(name, selfClosing, attributes) { this.type = jsx_syntax_1.JSXSyntax.JSXOpeningElement; this.name = name; this.selfClosing = selfClosing; this.attributes = attributes; } return JSXOpeningElement; }()); exports.JSXOpeningElement = JSXOpeningElement; var JSXSpreadAttribute = (function () { function JSXSpreadAttribute(argument) { this.type = jsx_syntax_1.JSXSyntax.JSXSpreadAttribute; this.argument = argument; } return JSXSpreadAttribute; }()); exports.JSXSpreadAttribute = JSXSpreadAttribute; var JSXText = (function () { function JSXText(value, raw) { this.type = jsx_syntax_1.JSXSyntax.JSXText; this.value = value; this.raw = raw; } return JSXText; }()); exports.JSXText = JSXText; /***/ }, /* 6 */ /***/ function(module, exports) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.JSXSyntax = { JSXAttribute: 'JSXAttribute', JSXClosingElement: 'JSXClosingElement', JSXElement: 'JSXElement', JSXEmptyExpression: 'JSXEmptyExpression', JSXExpressionContainer: 'JSXExpressionContainer', JSXIdentifier: 'JSXIdentifier', JSXMemberExpression: 'JSXMemberExpression', JSXNamespacedName: 'JSXNamespacedName', JSXOpeningElement: 'JSXOpeningElement', JSXSpreadAttribute: 'JSXSpreadAttribute', JSXText: 'JSXText' }; /***/ }, /* 7 */ /***/ function(module, exports, __nested_webpack_require_58416_58435__) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var syntax_1 = __nested_webpack_require_58416_58435__(2); /* tslint:disable:max-classes-per-file */ var ArrayExpression = (function () { function ArrayExpression(elements) { this.type = syntax_1.Syntax.ArrayExpression; this.elements = elements; } return ArrayExpression; }()); exports.ArrayExpression = ArrayExpression; var ArrayPattern = (function () { function ArrayPattern(elements) { this.type = syntax_1.Syntax.ArrayPattern; this.elements = elements; } return ArrayPattern; }()); exports.ArrayPattern = ArrayPattern; var ArrowFunctionExpression = (function () { function ArrowFunctionExpression(params, body, expression) { this.type = syntax_1.Syntax.ArrowFunctionExpression; this.id = null; this.params = params; this.body = body; this.generator = false; this.expression = expression; this.async = false; } return ArrowFunctionExpression; }()); exports.ArrowFunctionExpression = ArrowFunctionExpression; var AssignmentExpression = (function () { function AssignmentExpression(operator, left, right) { this.type = syntax_1.Syntax.AssignmentExpression; this.operator = operator; this.left = left; this.right = right; } return AssignmentExpression; }()); exports.AssignmentExpression = AssignmentExpression; var AssignmentPattern = (function () { function AssignmentPattern(left, right) { this.type = syntax_1.Syntax.AssignmentPattern; this.left = left; this.right = right; } return AssignmentPattern; }()); exports.AssignmentPattern = AssignmentPattern; var AsyncArrowFunctionExpression = (function () { function AsyncArrowFunctionExpression(params, body, expression) { this.type = syntax_1.Syntax.ArrowFunctionExpression; this.id = null; this.params = params; this.body = body; this.generator = false; this.expression = expression; this.async = true; } return AsyncArrowFunctionExpression; }()); exports.AsyncArrowFunctionExpression = AsyncArrowFunctionExpression; var AsyncFunctionDeclaration = (function () { function AsyncFunctionDeclaration(id, params, body) { this.type = syntax_1.Syntax.FunctionDeclaration; this.id = id; this.params = params; this.body = body; this.generator = false; this.expression = false; this.async = true; } return AsyncFunctionDeclaration; }()); exports.AsyncFunctionDeclaration = AsyncFunctionDeclaration; var AsyncFunctionExpression = (function () { function AsyncFunctionExpression(id, params, body) { this.type = syntax_1.Syntax.FunctionExpression; this.id = id; this.params = params; this.body = body; this.generator = false; this.expression = false; this.async = true; } return AsyncFunctionExpression; }()); exports.AsyncFunctionExpression = AsyncFunctionExpression; var AwaitExpression = (function () { function AwaitExpression(argument) { this.type = syntax_1.Syntax.AwaitExpression; this.argument = argument; } return AwaitExpression; }()); exports.AwaitExpression = AwaitExpression; var BinaryExpression = (function () { function BinaryExpression(operator, left, right) { var logical = (operator === '||' || operator === '&&'); this.type = logical ? syntax_1.Syntax.LogicalExpression : syntax_1.Syntax.BinaryExpression; this.operator = operator; this.left = left; this.right = right; } return BinaryExpression; }()); exports.BinaryExpression = BinaryExpression; var BlockStatement = (function () { function BlockStatement(body) { this.type = syntax_1.Syntax.BlockStatement; this.body = body; } return BlockStatement; }()); exports.BlockStatement = BlockStatement; var BreakStatement = (function () { function BreakStatement(label) { this.type = syntax_1.Syntax.BreakStatement; this.label = label; } return BreakStatement; }()); exports.BreakStatement = BreakStatement; var CallExpression = (function () { function CallExpression(callee, args) { this.type = syntax_1.Syntax.CallExpression; this.callee = callee; this.arguments = args; } return CallExpression; }()); exports.CallExpression = CallExpression; var CatchClause = (function () { function CatchClause(param, body) { this.type = syntax_1.Syntax.CatchClause; this.param = param; this.body = body; } return CatchClause; }()); exports.CatchClause = CatchClause; var ClassBody = (function () { function ClassBody(body) { this.type = syntax_1.Syntax.ClassBody; this.body = body; } return ClassBody; }()); exports.ClassBody = ClassBody; var ClassDeclaration = (function () { function ClassDeclaration(id, superClass, body) { this.type = syntax_1.Syntax.ClassDeclaration; this.id = id; this.superClass = superClass; this.body = body; } return ClassDeclaration; }()); exports.ClassDeclaration = ClassDeclaration; var ClassExpression = (function () { function ClassExpression(id, superClass, body) { this.type = syntax_1.Syntax.ClassExpression; this.id = id; this.superClass = superClass; this.body = body; } return ClassExpression; }()); exports.ClassExpression = ClassExpression; var ComputedMemberExpression = (function () { function ComputedMemberExpression(object, property) { this.type = syntax_1.Syntax.MemberExpression; this.computed = true; this.object = object; this.property = property; } return ComputedMemberExpression; }()); exports.ComputedMemberExpression = ComputedMemberExpression; var ConditionalExpression = (function () { function ConditionalExpression(test, consequent, alternate) { this.type = syntax_1.Syntax.ConditionalExpression; this.test = test; this.consequent = consequent; this.alternate = alternate; } return ConditionalExpression; }()); exports.ConditionalExpression = ConditionalExpression; var ContinueStatement = (function () { function ContinueStatement(label) { this.type = syntax_1.Syntax.ContinueStatement; this.label = label; } return ContinueStatement; }()); exports.ContinueStatement = ContinueStatement; var DebuggerStatement = (function () { function DebuggerStatement() { this.type = syntax_1.Syntax.DebuggerStatement; } return DebuggerStatement; }()); exports.DebuggerStatement = DebuggerStatement; var Directive = (function () { function Directive(expression, directive) { this.type = syntax_1.Syntax.ExpressionStatement; this.expression = expression; this.directive = directive; } return Directive; }()); exports.Directive = Directive; var DoWhileStatement = (function () { function DoWhileStatement(body, test) { this.type = syntax_1.Syntax.DoWhileStatement; this.body = body; this.test = test; } return DoWhileStatement; }()); exports.DoWhileStatement = DoWhileStatement; var EmptyStatement = (function () { function EmptyStatement() { this.type = syntax_1.Syntax.EmptyStatement; } return EmptyStatement; }()); exports.EmptyStatement = EmptyStatement; var ExportAllDeclaration = (function () { function ExportAllDeclaration(source) { this.type = syntax_1.Syntax.ExportAllDeclaration; this.source = source; } return ExportAllDeclaration; }()); exports.ExportAllDeclaration = ExportAllDeclaration; var ExportDefaultDeclaration = (function () { function ExportDefaultDeclaration(declaration) { this.type = syntax_1.Syntax.ExportDefaultDeclaration; this.declaration = declaration; } return ExportDefaultDeclaration; }()); exports.ExportDefaultDeclaration = ExportDefaultDeclaration; var ExportNamedDeclaration = (function () { function ExportNamedDeclaration(declaration, specifiers, source) { this.type = syntax_1.Syntax.ExportNamedDeclaration; this.declaration = declaration; this.specifiers = specifiers; this.source = source; } return ExportNamedDeclaration; }()); exports.ExportNamedDeclaration = ExportNamedDeclaration; var ExportSpecifier = (function () { function ExportSpecifier(local, exported) { this.type = syntax_1.Syntax.ExportSpecifier; this.exported = exported; this.local = local; } return ExportSpecifier; }()); exports.ExportSpecifier = ExportSpecifier; var ExpressionStatement = (function () { function ExpressionStatement(expression) { this.type = syntax_1.Syntax.ExpressionStatement; this.expression = expression; } return ExpressionStatement; }()); exports.ExpressionStatement = ExpressionStatement; var ForInStatement = (function () { function ForInStatement(left, right, body) { this.type = syntax_1.Syntax.ForInStatement; this.left = left; this.right = right; this.body = body; this.each = false; } return ForInStatement; }()); exports.ForInStatement = ForInStatement; var ForOfStatement = (function () { function ForOfStatement(left, right, body) { this.type = syntax_1.Syntax.ForOfStatement; this.left = left; this.right = right; this.body = body; } return ForOfStatement; }()); exports.ForOfStatement = ForOfStatement; var ForStatement = (function () { function ForStatement(init, test, update, body) { this.type = syntax_1.Syntax.ForStatement; this.init = init; this.test = test; this.update = update; this.body = body; } return ForStatement; }()); exports.ForStatement = ForStatement; var FunctionDeclaration = (function () { function FunctionDeclaration(id, params, body, generator) { this.type = syntax_1.Syntax.FunctionDeclaration; this.id = id; this.params = params; this.body = body; this.generator = generator; this.expression = false; this.async = false; } return FunctionDeclaration; }()); exports.FunctionDeclaration = FunctionDeclaration; var FunctionExpression = (function () { function FunctionExpression(id, params, body, generator) { this.type = syntax_1.Syntax.FunctionExpression; this.id = id; this.params = params; this.body = body; this.generator = generator; this.expression = false; this.async = false; } return FunctionExpression; }()); exports.FunctionExpression = FunctionExpression; var Identifier = (function () { function Identifier(name) { this.type = syntax_1.Syntax.Identifier; this.name = name; } return Identifier; }()); exports.Identifier = Identifier; var IfStatement = (function () { function IfStatement(test, consequent, alternate) { this.type = syntax_1.Syntax.IfStatement; this.test = test; this.consequent = consequent; this.alternate = alternate; } return IfStatement; }()); exports.IfStatement = IfStatement; var ImportDeclaration = (function () { function ImportDeclaration(specifiers, source) { this.type = syntax_1.Syntax.ImportDeclaration; this.specifiers = specifiers; this.source = source; } return ImportDeclaration; }()); exports.ImportDeclaration = ImportDeclaration; var ImportDefaultSpecifier = (function () { function ImportDefaultSpecifier(local) { this.type = syntax_1.Syntax.ImportDefaultSpecifier; this.local = local; } return ImportDefaultSpecifier; }()); exports.ImportDefaultSpecifier = ImportDefaultSpecifier; var ImportNamespaceSpecifier = (function () { function ImportNamespaceSpecifier(local) { this.type = syntax_1.Syntax.ImportNamespaceSpecifier; this.local = local; } return ImportNamespaceSpecifier; }()); exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier; var ImportSpecifier = (function () { function ImportSpecifier(local, imported) { this.type = syntax_1.Syntax.ImportSpecifier; this.local = local; this.imported = imported; } return ImportSpecifier; }()); exports.ImportSpecifier = ImportSpecifier; var LabeledStatement = (function () { function LabeledStatement(label, body) { this.type = syntax_1.Syntax.LabeledStatement; this.label = label; this.body = body; } return LabeledStatement; }()); exports.LabeledStatement = LabeledStatement; var Literal = (function () { function Literal(value, raw) { this.type = syntax_1.Syntax.Literal; this.value = value; this.raw = raw; } return Literal; }()); exports.Literal = Literal; var MetaProperty = (function () { function MetaProperty(meta, property) { this.type = syntax_1.Syntax.MetaProperty; this.meta = meta; this.property = property; } return MetaProperty; }()); exports.MetaProperty = MetaProperty; var MethodDefinition = (function () { function MethodDefinition(key, computed, value, kind, isStatic) { this.type = syntax_1.Syntax.MethodDefinition; this.key = key; this.computed = computed; this.value = value; this.kind = kind; this.static = isStatic; } return MethodDefinition; }()); exports.MethodDefinition = MethodDefinition; var Module = (function () { function Module(body) { this.type = syntax_1.Syntax.Program; this.body = body; this.sourceType = 'module'; } return Module; }()); exports.Module = Module; var NewExpression = (function () { function NewExpression(callee, args) { this.type = syntax_1.Syntax.NewExpression; this.callee = callee; this.arguments = args; } return NewExpression; }()); exports.NewExpression = NewExpression; var ObjectExpression = (function () { function ObjectExpression(properties) { this.type = syntax_1.Syntax.ObjectExpression; this.properties = properties; } return ObjectExpression; }()); exports.ObjectExpression = ObjectExpression; var ObjectPattern = (function () { function ObjectPattern(properties) { this.type = syntax_1.Syntax.ObjectPattern; this.properties = properties; } return ObjectPattern; }()); exports.ObjectPattern = ObjectPattern; var Property = (function () { function Property(kind, key, computed, value, method, shorthand) { this.type = syntax_1.Syntax.Property; this.key = key; this.computed = computed; this.value = value; this.kind = kind; this.method = method; this.shorthand = shorthand; } return Property; }()); exports.Property = Property; var RegexLiteral = (function () { function RegexLiteral(value, raw, pattern, flags) { this.type = syntax_1.Syntax.Literal; this.value = value; this.raw = raw; this.regex = { pattern: pattern, flags: flags }; } return RegexLiteral; }()); exports.RegexLiteral = RegexLiteral; var RestElement = (function () { function RestElement(argument) { this.type = syntax_1.Syntax.RestElement; this.argument = argument; } return RestElement; }()); exports.RestElement = RestElement; var ReturnStatement = (function () { function ReturnStatement(argument) { this.type = syntax_1.Syntax.ReturnStatement; this.argument = argument; } return ReturnStatement; }()); exports.ReturnStatement = ReturnStatement; var Script = (function () { function Script(body) { this.type = syntax_1.Syntax.Program; this.body = body; this.sourceType = 'script'; } return Script; }()); exports.Script = Script; var SequenceExpression = (function () { function SequenceExpression(expressions) { this.type = syntax_1.Syntax.SequenceExpression; this.expressions = expressions; } return SequenceExpression; }()); exports.SequenceExpression = SequenceExpression; var SpreadElement = (function () { function SpreadElement(argument) { this.type = syntax_1.Syntax.SpreadElement; this.argument = argument; } return SpreadElement; }()); exports.SpreadElement = SpreadElement; var StaticMemberExpression = (function () { function StaticMemberExpression(object, property) { this.type = syntax_1.Syntax.MemberExpression; this.computed = false; this.object = object; this.property = property; } return StaticMemberExpression; }()); exports.StaticMemberExpression = StaticMemberExpression; var Super = (function () { function Super() { this.type = syntax_1.Syntax.Super; } return Super; }()); exports.Super = Super; var SwitchCase = (function () { function SwitchCase(test, consequent) { this.type = syntax_1.Syntax.SwitchCase; this.test = test; this.consequent = consequent; } return SwitchCase; }()); exports.SwitchCase = SwitchCase; var SwitchStatement = (function () { function SwitchStatement(discriminant, cases) { this.type = syntax_1.Syntax.SwitchStatement; this.discriminant = discriminant; this.cases = cases; } return SwitchStatement; }()); exports.SwitchStatement = SwitchStatement; var TaggedTemplateExpression = (function () { function TaggedTemplateExpression(tag, quasi) { this.type = syntax_1.Syntax.TaggedTemplateExpression; this.tag = tag; this.quasi = quasi; } return TaggedTemplateExpression; }()); exports.TaggedTemplateExpression = TaggedTemplateExpression; var TemplateElement = (function () { function TemplateElement(value, tail) { this.type = syntax_1.Syntax.TemplateElement; this.value = value; this.tail = tail; } return TemplateElement; }()); exports.TemplateElement = TemplateElement; var TemplateLiteral = (function () { function TemplateLiteral(quasis, expressions) { this.type = syntax_1.Syntax.TemplateLiteral; this.quasis = quasis; this.expressions = expressions; } return TemplateLiteral; }()); exports.TemplateLiteral = TemplateLiteral; var ThisExpression = (function () { function ThisExpression() { this.type = syntax_1.Syntax.ThisExpression; } return ThisExpression; }()); exports.ThisExpression = ThisExpression; var ThrowStatement = (function () { function ThrowStatement(argument) { this.type = syntax_1.Syntax.ThrowStatement; this.argument = argument; } return ThrowStatement; }()); exports.ThrowStatement = ThrowStatement; var TryStatement = (function () { function TryStatement(block, handler, finalizer) { this.type = syntax_1.Syntax.TryStatement; this.block = block; this.handler = handler; this.finalizer = finalizer; } return TryStatement; }()); exports.TryStatement = TryStatement; var UnaryExpression = (function () { function UnaryExpression(operator, argument) { this.type = syntax_1.Syntax.UnaryExpression; this.operator = operator; this.argument = argument; this.prefix = true; } return UnaryExpression; }()); exports.UnaryExpression = UnaryExpression; var UpdateExpression = (function () { function UpdateExpression(operator, argument, prefix) { this.type = syntax_1.Syntax.UpdateExpression; this.operator = operator; this.argument = argument; this.prefix = prefix; } return UpdateExpression; }()); exports.UpdateExpression = UpdateExpression; var VariableDeclaration = (function () { function VariableDeclaration(declarations, kind) { this.type = syntax_1.Syntax.VariableDeclaration; this.declarations = declarations; this.kind = kind; } return VariableDeclaration; }()); exports.VariableDeclaration = VariableDeclaration; var VariableDeclarator = (function () { function VariableDeclarator(id, init) { this.type = syntax_1.Syntax.VariableDeclarator; this.id = id; this.init = init; } return VariableDeclarator; }()); exports.VariableDeclarator = VariableDeclarator; var WhileStatement = (function () { function WhileStatement(test, body) { this.type = syntax_1.Syntax.WhileStatement; this.test = test; this.body = body; } return WhileStatement; }()); exports.WhileStatement = WhileStatement; var WithStatement = (function () { function WithStatement(object, body) { this.type = syntax_1.Syntax.WithStatement; this.object = object; this.body = body; } return WithStatement; }()); exports.WithStatement = WithStatement; var YieldExpression = (function () { function YieldExpression(argument, delegate) { this.type = syntax_1.Syntax.YieldExpression; this.argument = argument; this.delegate = delegate; } return YieldExpression; }()); exports.YieldExpression = YieldExpression; /***/ }, /* 8 */ /***/ function(module, exports, __nested_webpack_require_80491_80510__) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var assert_1 = __nested_webpack_require_80491_80510__(9); var error_handler_1 = __nested_webpack_require_80491_80510__(10); var messages_1 = __nested_webpack_require_80491_80510__(11); var Node = __nested_webpack_require_80491_80510__(7); var scanner_1 = __nested_webpack_require_80491_80510__(12); var syntax_1 = __nested_webpack_require_80491_80510__(2); var token_1 = __nested_webpack_require_80491_80510__(13); var ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder'; var Parser = (function () { function Parser(code, options, delegate) { if (options === void 0) { options = {}; } this.config = { range: (typeof options.range === 'boolean') && options.range, loc: (typeof options.loc === 'boolean') && options.loc, source: null, tokens: (typeof options.tokens === 'boolean') && options.tokens, comment: (typeof options.comment === 'boolean') && options.comment, tolerant: (typeof options.tolerant === 'boolean') && options.tolerant }; if (this.config.loc && options.source && options.source !== null) { this.config.source = String(options.source); } this.delegate = delegate; this.errorHandler = new error_handler_1.ErrorHandler(); this.errorHandler.tolerant = this.config.tolerant; this.scanner = new scanner_1.Scanner(code, this.errorHandler); this.scanner.trackComment = this.config.comment; this.operatorPrecedence = { ')': 0, ';': 0, ',': 0, '=': 0, ']': 0, '||': 1, '&&': 2, '|': 3, '^': 4, '&': 5, '==': 6, '!=': 6, '===': 6, '!==': 6, '<': 7, '>': 7, '<=': 7, '>=': 7, '<<': 8, '>>': 8, '>>>': 8, '+': 9, '-': 9, '*': 11, '/': 11, '%': 11 }; this.lookahead = { type: 2 /* EOF */, value: '', lineNumber: this.scanner.lineNumber, lineStart: 0, start: 0, end: 0 }; this.hasLineTerminator = false; this.context = { isModule: false, await: false, allowIn: true, allowStrictDirective: true, allowYield: true, firstCoverInitializedNameError: null, isAssignmentTarget: false, isBindingElement: false, inFunctionBody: false, inIteration: false, inSwitch: false, labelSet: {}, strict: false }; this.tokens = []; this.startMarker = { index: 0, line: this.scanner.lineNumber, column: 0 }; this.lastMarker = { index: 0, line: this.scanner.lineNumber, column: 0 }; this.nextToken(); this.lastMarker = { index: this.scanner.index, line: this.scanner.lineNumber, column: this.scanner.index - this.scanner.lineStart }; } Parser.prototype.throwError = function (messageFormat) { var values = []; for (var _i = 1; _i < arguments.length; _i++) { values[_i - 1] = arguments[_i]; } var args = Array.prototype.slice.call(arguments, 1); var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) { assert_1.assert(idx < args.length, 'Message reference must be in range'); return args[idx]; }); var index = this.lastMarker.index; var line = this.lastMarker.line; var column = this.lastMarker.column + 1; throw this.errorHandler.createError(index, line, column, msg); }; Parser.prototype.tolerateError = function (messageFormat) { var values = []; for (var _i = 1; _i < arguments.length; _i++) { values[_i - 1] = arguments[_i]; } var args = Array.prototype.slice.call(arguments, 1); var msg = messageFormat.replace(/%(\d)/g, function (whole, idx) { assert_1.assert(idx < args.length, 'Message reference must be in range'); return args[idx]; }); var index = this.lastMarker.index; var line = this.scanner.lineNumber; var column = this.lastMarker.column + 1; this.errorHandler.tolerateError(index, line, column, msg); }; // Throw an exception because of the token. Parser.prototype.unexpectedTokenError = function (token, message) { var msg = message || messages_1.Messages.UnexpectedToken; var value; if (token) { if (!message) { msg = (token.type === 2 /* EOF */) ? messages_1.Messages.UnexpectedEOS : (token.type === 3 /* Identifier */) ? messages_1.Messages.UnexpectedIdentifier : (token.type === 6 /* NumericLiteral */) ? messages_1.Messages.UnexpectedNumber : (token.type === 8 /* StringLiteral */) ? messages_1.Messages.UnexpectedString : (token.type === 10 /* Template */) ? messages_1.Messages.UnexpectedTemplate : messages_1.Messages.UnexpectedToken; if (token.type === 4 /* Keyword */) { if (this.scanner.isFutureReservedWord(token.value)) { msg = messages_1.Messages.UnexpectedReserved; } else if (this.context.strict && this.scanner.isStrictModeReservedWord(token.value)) { msg = messages_1.Messages.StrictReservedWord; } } } value = token.value; } else { value = 'ILLEGAL'; } msg = msg.replace('%0', value); if (token && typeof token.lineNumber === 'number') { var index = token.start; var line = token.lineNumber; var lastMarkerLineStart = this.lastMarker.index - this.lastMarker.column; var column = token.start - lastMarkerLineStart + 1; return this.errorHandler.createError(index, line, column, msg); } else { var index = this.lastMarker.index; var line = this.lastMarker.line; var column = this.lastMarker.column + 1; return this.errorHandler.createError(index, line, column, msg); } }; Parser.prototype.throwUnexpectedToken = function (token, message) { throw this.unexpectedTokenError(token, message); }; Parser.prototype.tolerateUnexpectedToken = function (token, message) { this.errorHandler.tolerate(this.unexpectedTokenError(token, message)); }; Parser.prototype.collectComments = function () { if (!this.config.comment) { this.scanner.scanComments(); } else { var comments = this.scanner.scanComments(); if (comments.length > 0 && this.delegate) { for (var i = 0; i < comments.length; ++i) { var e = comments[i]; var node = void 0; node = { type: e.multiLine ? 'BlockComment' : 'LineComment', value: this.scanner.source.slice(e.slice[0], e.slice[1]) }; if (this.config.range) { node.range = e.range; } if (this.config.loc) { node.loc = e.loc; } var metadata = { start: { line: e.loc.start.line, column: e.loc.start.column, offset: e.range[0] }, end: { line: e.loc.end.line, column: e.loc.end.column, offset: e.range[1] } }; this.delegate(node, metadata); } } } }; // From internal representation to an external structure Parser.prototype.getTokenRaw = function (token) { return this.scanner.source.slice(token.start, token.end); }; Parser.prototype.convertToken = function (token) { var t = { type: token_1.TokenName[token.type], value: this.getTokenRaw(token) }; if (this.config.range) { t.range = [token.start, token.end]; } if (this.config.loc) { t.loc = { start: { line: this.startMarker.line, column: this.startMarker.column }, end: { line: this.scanner.lineNumber, column: this.scanner.index - this.scanner.lineStart } }; } if (token.type === 9 /* RegularExpression */) { var pattern = token.pattern; var flags = token.flags; t.regex = { pattern: pattern, flags: flags }; } return t; }; Parser.prototype.nextToken = function () { var token = this.lookahead; this.lastMarker.index = this.scanner.index; this.lastMarker.line = this.scanner.lineNumber; this.lastMarker.column = this.scanner.index - this.scanner.lineStart; this.collectComments(); if (this.scanner.index !== this.startMarker.index) { this.startMarker.index = this.scanner.index; this.startMarker.line = this.scanner.lineNumber; this.startMarker.column = this.scanner.index - this.scanner.lineStart; } var next = this.scanner.lex(); this.hasLineTerminator = (token.lineNumber !== next.lineNumber); if (next && this.context.strict && next.type === 3 /* Identifier */) { if (this.scanner.isStrictModeReservedWord(next.value)) { next.type = 4 /* Keyword */; } } this.lookahead = next; if (this.config.tokens && next.type !== 2 /* EOF */) { this.tokens.push(this.convertToken(next)); } return token; }; Parser.prototype.nextRegexToken = function () { this.collectComments(); var token = this.scanner.scanRegExp(); if (this.config.tokens) { // Pop the previous token, '/' or '/=' // This is added from the lookahead token. this.tokens.pop(); this.tokens.push(this.convertToken(token)); } // Prime the next lookahead. this.lookahead = token; this.nextToken(); return token; }; Parser.prototype.createNode = function () { return { index: this.startMarker.index, line: this.startMarker.line, column: this.startMarker.column }; }; Parser.prototype.startNode = function (token, lastLineStart) { if (lastLineStart === void 0) { lastLineStart = 0; } var column = token.start - token.lineStart; var line = token.lineNumber; if (column < 0) { column += lastLineStart; line--; } return { index: token.start, line: line, column: column }; }; Parser.prototype.finalize = function (marker, node) { if (this.config.range) { node.range = [marker.index, this.lastMarker.index]; } if (this.config.loc) { node.loc = { start: { line: marker.line, column: marker.column, }, end: { line: this.lastMarker.line, column: this.lastMarker.column } }; if (this.config.source) { node.loc.source = this.config.source; } } if (this.delegate) { var metadata = { start: { line: marker.line, column: marker.column, offset: marker.index }, end: { line: this.lastMarker.line, column: this.lastMarker.column, offset: this.lastMarker.index } }; this.delegate(node, metadata); } return node; }; // Expect the next token to match the specified punctuator. // If not, an exception will be thrown. Parser.prototype.expect = function (value) { var token = this.nextToken(); if (token.type !== 7 /* Punctuator */ || token.value !== value) { this.throwUnexpectedToken(token); } }; // Quietly expect a comma when in tolerant mode, otherwise delegates to expect(). Parser.prototype.expectCommaSeparator = function () { if (this.config.tolerant) { var token = this.lookahead; if (token.type === 7 /* Punctuator */ && token.value === ',') { this.nextToken(); } else if (token.type === 7 /* Punctuator */ && token.value === ';') { this.nextToken(); this.tolerateUnexpectedToken(token); } else { this.tolerateUnexpectedToken(token, messages_1.Messages.UnexpectedToken); } } else { this.expect(','); } }; // Expect the next token to match the specified keyword. // If not, an exception will be thrown. Parser.prototype.expectKeyword = function (keyword) { var token = this.nextToken(); if (token.type !== 4 /* Keyword */ || token.value !== keyword) { this.throwUnexpectedToken(token); } }; // Return true if the next token matches the specified punctuator. Parser.prototype.match = function (value) { return this.lookahead.type === 7 /* Punctuator */ && this.lookahead.value === value; }; // Return true if the next token matches the specified keyword Parser.prototype.matchKeyword = function (keyword) { return this.lookahead.type === 4 /* Keyword */ && this.lookahead.value === keyword; }; // Return true if the next token matches the specified contextual keyword // (where an identifier is sometimes a keyword depending on the context) Parser.prototype.matchContextualKeyword = function (keyword) { return this.lookahead.type === 3 /* Identifier */ && this.lookahead.value === keyword; }; // Return true if the next token is an assignment operator Parser.prototype.matchAssign = function () { if (this.lookahead.type !== 7 /* Punctuator */) { return false; } var op = this.lookahead.value; return op === '=' || op === '*=' || op === '**=' || op === '/=' || op === '%=' || op === '+=' || op === '-=' || op === '<<=' || op === '>>=' || op === '>>>=' || op === '&=' || op === '^=' || op === '|='; }; // Cover grammar support. // // When an assignment expression position starts with an left parenthesis, the determination of the type // of the syntax is to be deferred arbitrarily long until the end of the parentheses pair (plus a lookahead) // or the first comma. This situation also defers the determination of all the expressions nested in the pair. // // There are three productions that can be parsed in a parentheses pair that needs to be determined // after the outermost pair is closed. They are: // // 1. AssignmentExpression // 2. BindingElements // 3. AssignmentTargets // // In order to avoid exponential backtracking, we use two flags to denote if the production can be // binding element or assignment target. // // The three productions have the relationship: // // BindingElements ⊆ AssignmentTargets ⊆ AssignmentExpression // // with a single exception that CoverInitializedName when used directly in an Expression, generates // an early error. Therefore, we need the third state, firstCoverInitializedNameError, to track the // first usage of CoverInitializedName and report it when we reached the end of the parentheses pair. // // isolateCoverGrammar function runs the given parser function with a new cover grammar context, and it does not // effect the current flags. This means the production the parser parses is only used as an expression. Therefore // the CoverInitializedName check is conducted. // // inheritCoverGrammar function runs the given parse function with a new cover grammar context, and it propagates // the flags outside of the parser. This means the production the parser parses is used as a part of a potential // pattern. The CoverInitializedName check is deferred. Parser.prototype.isolateCoverGrammar = function (parseFunction) { var previousIsBindingElement = this.context.isBindingElement; var previousIsAssignmentTarget = this.context.isAssignmentTarget; var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError; this.context.isBindingElement = true; this.context.isAssignmentTarget = true; this.context.firstCoverInitializedNameError = null; var result = parseFunction.call(this); if (this.context.firstCoverInitializedNameError !== null) { this.throwUnexpectedToken(this.context.firstCoverInitializedNameError); } this.context.isBindingElement = previousIsBindingElement; this.context.isAssignmentTarget = previousIsAssignmentTarget; this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError; return result; }; Parser.prototype.inheritCoverGrammar = function (parseFunction) { var previousIsBindingElement = this.context.isBindingElement; var previousIsAssignmentTarget = this.context.isAssignmentTarget; var previousFirstCoverInitializedNameError = this.context.firstCoverInitializedNameError; this.context.isBindingElement = true; this.context.isAssignmentTarget = true; this.context.firstCoverInitializedNameError = null; var result = parseFunction.call(this); this.context.isBindingElement = this.context.isBindingElement && previousIsBindingElement; this.context.isAssignmentTarget = this.context.isAssignmentTarget && previousIsAssignmentTarget; this.context.firstCoverInitializedNameError = previousFirstCoverInitializedNameError || this.context.firstCoverInitializedNameError; return result; }; Parser.prototype.consumeSemicolon = function () { if (this.match(';')) { this.nextToken(); } else if (!this.hasLineTerminator) { if (this.lookahead.type !== 2 /* EOF */ && !this.match('}')) { this.throwUnexpectedToken(this.lookahead); } this.lastMarker.index = this.startMarker.index; this.lastMarker.line = this.startMarker.line; this.lastMarker.column = this.startMarker.column; } }; // https://tc39.github.io/ecma262/#sec-primary-expression Parser.prototype.parsePrimaryExpression = function () { var node = this.createNode(); var expr; var token, raw; switch (this.lookahead.type) { case 3 /* Identifier */: if ((this.context.isModule || this.context.await) && this.lookahead.value === 'await') { this.tolerateUnexpectedToken(this.lookahead); } expr = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(node, new Node.Identifier(this.nextToken().value)); break; case 6 /* NumericLiteral */: case 8 /* StringLiteral */: if (this.context.strict && this.lookahead.octal) { this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.StrictOctalLiteral); } this.context.isAssignmentTarget = false; this.context.isBindingElement = false; token = this.nextToken(); raw = this.getTokenRaw(token); expr = this.finalize(node, new Node.Literal(token.value, raw)); break; case 1 /* BooleanLiteral */: this.context.isAssignmentTarget = false; this.context.isBindingElement = false; token = this.nextToken(); raw = this.getTokenRaw(token); expr = this.finalize(node, new Node.Literal(token.value === 'true', raw)); break; case 5 /* NullLiteral */: this.context.isAssignmentTarget = false; this.context.isBindingElement = false; token = this.nextToken(); raw = this.getTokenRaw(token); expr = this.finalize(node, new Node.Literal(null, raw)); break; case 10 /* Template */: expr = this.parseTemplateLiteral(); break; case 7 /* Punctuator */: switch (this.lookahead.value) { case '(': this.context.isBindingElement = false; expr = this.inheritCoverGrammar(this.parseGroupExpression); break; case '[': expr = this.inheritCoverGrammar(this.parseArrayInitializer); break; case '{': expr = this.inheritCoverGrammar(this.parseObjectInitializer); break; case '/': case '/=': this.context.isAssignmentTarget = false; this.context.isBindingElement = false; this.scanner.index = this.startMarker.index; token = this.nextRegexToken(); raw = this.getTokenRaw(token); expr = this.finalize(node, new Node.RegexLiteral(token.regex, raw, token.pattern, token.flags)); break; default: expr = this.throwUnexpectedToken(this.nextToken()); } break; case 4 /* Keyword */: if (!this.context.strict && this.context.allowYield && this.matchKeyword('yield')) { expr = this.parseIdentifierName(); } else if (!this.context.strict && this.matchKeyword('let')) { expr = this.finalize(node, new Node.Identifier(this.nextToken().value)); } else { this.context.isAssignmentTarget = false; this.context.isBindingElement = false; if (this.matchKeyword('function')) { expr = this.parseFunctionExpression(); } else if (this.matchKeyword('this')) { this.nextToken(); expr = this.finalize(node, new Node.ThisExpression()); } else if (this.matchKeyword('class')) { expr = this.parseClassExpression(); } else { expr = this.throwUnexpectedToken(this.nextToken()); } } break; default: expr = this.throwUnexpectedToken(this.nextToken()); } return expr; }; // https://tc39.github.io/ecma262/#sec-array-initializer Parser.prototype.parseSpreadElement = function () { var node = this.createNode(); this.expect('...'); var arg = this.inheritCoverGrammar(this.parseAssignmentExpression); return this.finalize(node, new Node.SpreadElement(arg)); }; Parser.prototype.parseArrayInitializer = function () { var node = this.createNode(); var elements = []; this.expect('['); while (!this.match(']')) { if (this.match(',')) { this.nextToken(); elements.push(null); } else if (this.match('...')) { var element = this.parseSpreadElement(); if (!this.match(']')) { this.context.isAssignmentTarget = false; this.context.isBindingElement = false; this.expect(','); } elements.push(element); } else { elements.push(this.inheritCoverGrammar(this.parseAssignmentExpression)); if (!this.match(']')) { this.expect(','); } } } this.expect(']'); return this.finalize(node, new Node.ArrayExpression(elements)); }; // https://tc39.github.io/ecma262/#sec-object-initializer Parser.prototype.parsePropertyMethod = function (params) { this.context.isAssignmentTarget = false; this.context.isBindingElement = false; var previousStrict = this.context.strict; var previousAllowStrictDirective = this.context.allowStrictDirective; this.context.allowStrictDirective = params.simple; var body = this.isolateCoverGrammar(this.parseFunctionSourceElements); if (this.context.strict && params.firstRestricted) { this.tolerateUnexpectedToken(params.firstRestricted, params.message); } if (this.context.strict && params.stricted) { this.tolerateUnexpectedToken(params.stricted, params.message); } this.context.strict = previousStrict; this.context.allowStrictDirective = previousAllowStrictDirective; return body; }; Parser.prototype.parsePropertyMethodFunction = function () { var isGenerator = false; var node = this.createNode(); var previousAllowYield = this.context.allowYield; this.context.allowYield = true; var params = this.parseFormalParameters(); var method = this.parsePropertyMethod(params); this.context.allowYield = previousAllowYield; return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator)); }; Parser.prototype.parsePropertyMethodAsyncFunction = function () { var node = this.createNode(); var previousAllowYield = this.context.allowYield; var previousAwait = this.context.await; this.context.allowYield = false; this.context.await = true; var params = this.parseFormalParameters(); var method = this.parsePropertyMethod(params); this.context.allowYield = previousAllowYield; this.context.await = previousAwait; return this.finalize(node, new Node.AsyncFunctionExpression(null, params.params, method)); }; Parser.prototype.parseObjectPropertyKey = function () { var node = this.createNode(); var token = this.nextToken(); var key; switch (token.type) { case 8 /* StringLiteral */: case 6 /* NumericLiteral */: if (this.context.strict && token.octal) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictOctalLiteral); } var raw = this.getTokenRaw(token); key = this.finalize(node, new Node.Literal(token.value, raw)); break; case 3 /* Identifier */: case 1 /* BooleanLiteral */: case 5 /* NullLiteral */: case 4 /* Keyword */: key = this.finalize(node, new Node.Identifier(token.value)); break; case 7 /* Punctuator */: if (token.value === '[') { key = this.isolateCoverGrammar(this.parseAssignmentExpression); this.expect(']'); } else { key = this.throwUnexpectedToken(token); } break; default: key = this.throwUnexpectedToken(token); } return key; }; Parser.prototype.isPropertyKey = function (key, value) { return (key.type === syntax_1.Syntax.Identifier && key.name === value) || (key.type === syntax_1.Syntax.Literal && key.value === value); }; Parser.prototype.parseObjectProperty = function (hasProto) { var node = this.createNode(); var token = this.lookahead; var kind; var key = null; var value = null; var computed = false; var method = false; var shorthand = false; var isAsync = false; if (token.type === 3 /* Identifier */) { var id = token.value; this.nextToken(); computed = this.match('['); isAsync = !this.hasLineTerminator && (id === 'async') && !this.match(':') && !this.match('(') && !this.match('*') && !this.match(','); key = isAsync ? this.parseObjectPropertyKey() : this.finalize(node, new Node.Identifier(id)); } else if (this.match('*')) { this.nextToken(); } else { computed = this.match('['); key = this.parseObjectPropertyKey(); } var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead); if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'get' && lookaheadPropertyKey) { kind = 'get'; computed = this.match('['); key = this.parseObjectPropertyKey(); this.context.allowYield = false; value = this.parseGetterMethod(); } else if (token.type === 3 /* Identifier */ && !isAsync && token.value === 'set' && lookaheadPropertyKey) { kind = 'set'; computed = this.match('['); key = this.parseObjectPropertyKey(); value = this.parseSetterMethod(); } else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) { kind = 'init'; computed = this.match('['); key = this.parseObjectPropertyKey(); value = this.parseGeneratorMethod(); method = true; } else { if (!key) { this.throwUnexpectedToken(this.lookahead); } kind = 'init'; if (this.match(':') && !isAsync) { if (!computed && this.isPropertyKey(key, '__proto__')) { if (hasProto.value) { this.tolerateError(messages_1.Messages.DuplicateProtoProperty); } hasProto.value = true; } this.nextToken(); value = this.inheritCoverGrammar(this.parseAssignmentExpression); } else if (this.match('(')) { value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction(); method = true; } else if (token.type === 3 /* Identifier */) { var id = this.finalize(node, new Node.Identifier(token.value)); if (this.match('=')) { this.context.firstCoverInitializedNameError = this.lookahead; this.nextToken(); shorthand = true; var init = this.isolateCoverGrammar(this.parseAssignmentExpression); value = this.finalize(node, new Node.AssignmentPattern(id, init)); } else { shorthand = true; value = id; } } else { this.throwUnexpectedToken(this.nextToken()); } } return this.finalize(node, new Node.Property(kind, key, computed, value, method, shorthand)); }; Parser.prototype.parseObjectInitializer = function () { var node = this.createNode(); this.expect('{'); var properties = []; var hasProto = { value: false }; while (!this.match('}')) { properties.push(this.parseObjectProperty(hasProto)); if (!this.match('}')) { this.expectCommaSeparator(); } } this.expect('}'); return this.finalize(node, new Node.ObjectExpression(properties)); }; // https://tc39.github.io/ecma262/#sec-template-literals Parser.prototype.parseTemplateHead = function () { assert_1.assert(this.lookahead.head, 'Template literal must start with a template head'); var node = this.createNode(); var token = this.nextToken(); var raw = token.value; var cooked = token.cooked; return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail)); }; Parser.prototype.parseTemplateElement = function () { if (this.lookahead.type !== 10 /* Template */) { this.throwUnexpectedToken(); } var node = this.createNode(); var token = this.nextToken(); var raw = token.value; var cooked = token.cooked; return this.finalize(node, new Node.TemplateElement({ raw: raw, cooked: cooked }, token.tail)); }; Parser.prototype.parseTemplateLiteral = function () { var node = this.createNode(); var expressions = []; var quasis = []; var quasi = this.parseTemplateHead(); quasis.push(quasi); while (!quasi.tail) { expressions.push(this.parseExpression()); quasi = this.parseTemplateElement(); quasis.push(quasi); } return this.finalize(node, new Node.TemplateLiteral(quasis, expressions)); }; // https://tc39.github.io/ecma262/#sec-grouping-operator Parser.prototype.reinterpretExpressionAsPattern = function (expr) { switch (expr.type) { case syntax_1.Syntax.Identifier: case syntax_1.Syntax.MemberExpression: case syntax_1.Syntax.RestElement: case syntax_1.Syntax.AssignmentPattern: break; case syntax_1.Syntax.SpreadElement: expr.type = syntax_1.Syntax.RestElement; this.reinterpretExpressionAsPattern(expr.argument); break; case syntax_1.Syntax.ArrayExpression: expr.type = syntax_1.Syntax.ArrayPattern; for (var i = 0; i < expr.elements.length; i++) { if (expr.elements[i] !== null) { this.reinterpretExpressionAsPattern(expr.elements[i]); } } break; case syntax_1.Syntax.ObjectExpression: expr.type = syntax_1.Syntax.ObjectPattern; for (var i = 0; i < expr.properties.length; i++) { this.reinterpretExpressionAsPattern(expr.properties[i].value); } break; case syntax_1.Syntax.AssignmentExpression: expr.type = syntax_1.Syntax.AssignmentPattern; delete expr.operator; this.reinterpretExpressionAsPattern(expr.left); break; default: // Allow other node type for tolerant parsing. break; } }; Parser.prototype.parseGroupExpression = function () { var expr; this.expect('('); if (this.match(')')) { this.nextToken(); if (!this.match('=>')) { this.expect('=>'); } expr = { type: ArrowParameterPlaceHolder, params: [], async: false }; } else { var startToken = this.lookahead; var params = []; if (this.match('...')) { expr = this.parseRestElement(params); this.expect(')'); if (!this.match('=>')) { this.expect('=>'); } expr = { type: ArrowParameterPlaceHolder, params: [expr], async: false }; } else { var arrow = false; this.context.isBindingElement = true; expr = this.inheritCoverGrammar(this.parseAssignmentExpression); if (this.match(',')) { var expressions = []; this.context.isAssignmentTarget = false; expressions.push(expr); while (this.lookahead.type !== 2 /* EOF */) { if (!this.match(',')) { break; } this.nextToken(); if (this.match(')')) { this.nextToken(); for (var i = 0; i < expressions.length; i++) { this.reinterpretExpressionAsPattern(expressions[i]); } arrow = true; expr = { type: ArrowParameterPlaceHolder, params: expressions, async: false }; } else if (this.match('...')) { if (!this.context.isBindingElement) { this.throwUnexpectedToken(this.lookahead); } expressions.push(this.parseRestElement(params)); this.expect(')'); if (!this.match('=>')) { this.expect('=>'); } this.context.isBindingElement = false; for (var i = 0; i < expressions.length; i++) { this.reinterpretExpressionAsPattern(expressions[i]); } arrow = true; expr = { type: ArrowParameterPlaceHolder, params: expressions, async: false }; } else { expressions.push(this.inheritCoverGrammar(this.parseAssignmentExpression)); } if (arrow) { break; } } if (!arrow) { expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions)); } } if (!arrow) { this.expect(')'); if (this.match('=>')) { if (expr.type === syntax_1.Syntax.Identifier && expr.name === 'yield') { arrow = true; expr = { type: ArrowParameterPlaceHolder, params: [expr], async: false }; } if (!arrow) { if (!this.context.isBindingElement) { this.throwUnexpectedToken(this.lookahead); } if (expr.type === syntax_1.Syntax.SequenceExpression) { for (var i = 0; i < expr.expressions.length; i++) { this.reinterpretExpressionAsPattern(expr.expressions[i]); } } else { this.reinterpretExpressionAsPattern(expr); } var parameters = (expr.type === syntax_1.Syntax.SequenceExpression ? expr.expressions : [expr]); expr = { type: ArrowParameterPlaceHolder, params: parameters, async: false }; } } this.context.isBindingElement = false; } } } return expr; }; // https://tc39.github.io/ecma262/#sec-left-hand-side-expressions Parser.prototype.parseArguments = function () { this.expect('('); var args = []; if (!this.match(')')) { while (true) { var expr = this.match('...') ? this.parseSpreadElement() : this.isolateCoverGrammar(this.parseAssignmentExpression); args.push(expr); if (this.match(')')) { break; } this.expectCommaSeparator(); if (this.match(')')) { break; } } } this.expect(')'); return args; }; Parser.prototype.isIdentifierName = function (token) { return token.type === 3 /* Identifier */ || token.type === 4 /* Keyword */ || token.type === 1 /* BooleanLiteral */ || token.type === 5 /* NullLiteral */; }; Parser.prototype.parseIdentifierName = function () { var node = this.createNode(); var token = this.nextToken(); if (!this.isIdentifierName(token)) { this.throwUnexpectedToken(token); } return this.finalize(node, new Node.Identifier(token.value)); }; Parser.prototype.parseNewExpression = function () { var node = this.createNode(); var id = this.parseIdentifierName(); assert_1.assert(id.name === 'new', 'New expression must start with `new`'); var expr; if (this.match('.')) { this.nextToken(); if (this.lookahead.type === 3 /* Identifier */ && this.context.inFunctionBody && this.lookahead.value === 'target') { var property = this.parseIdentifierName(); expr = new Node.MetaProperty(id, property); } else { this.throwUnexpectedToken(this.lookahead); } } else { var callee = this.isolateCoverGrammar(this.parseLeftHandSideExpression); var args = this.match('(') ? this.parseArguments() : []; expr = new Node.NewExpression(callee, args); this.context.isAssignmentTarget = false; this.context.isBindingElement = false; } return this.finalize(node, expr); }; Parser.prototype.parseAsyncArgument = function () { var arg = this.parseAssignmentExpression(); this.context.firstCoverInitializedNameError = null; return arg; }; Parser.prototype.parseAsyncArguments = function () { this.expect('('); var args = []; if (!this.match(')')) { while (true) { var expr = this.match('...') ? this.parseSpreadElement() : this.isolateCoverGrammar(this.parseAsyncArgument); args.push(expr); if (this.match(')')) { break; } this.expectCommaSeparator(); if (this.match(')')) { break; } } } this.expect(')'); return args; }; Parser.prototype.parseLeftHandSideExpressionAllowCall = function () { var startToken = this.lookahead; var maybeAsync = this.matchContextualKeyword('async'); var previousAllowIn = this.context.allowIn; this.context.allowIn = true; var expr; if (this.matchKeyword('super') && this.context.inFunctionBody) { expr = this.createNode(); this.nextToken(); expr = this.finalize(expr, new Node.Super()); if (!this.match('(') && !this.match('.') && !this.match('[')) { this.throwUnexpectedToken(this.lookahead); } } else { expr = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression); } while (true) { if (this.match('.')) { this.context.isBindingElement = false; this.context.isAssignmentTarget = true; this.expect('.'); var property = this.parseIdentifierName(); expr = this.finalize(this.startNode(startToken), new Node.StaticMemberExpression(expr, property)); } else if (this.match('(')) { var asyncArrow = maybeAsync && (startToken.lineNumber === this.lookahead.lineNumber); this.context.isBindingElement = false; this.context.isAssignmentTarget = false; var args = asyncArrow ? this.parseAsyncArguments() : this.parseArguments(); expr = this.finalize(this.startNode(startToken), new Node.CallExpression(expr, args)); if (asyncArrow && this.match('=>')) { for (var i = 0; i < args.length; ++i) { this.reinterpretExpressionAsPattern(args[i]); } expr = { type: ArrowParameterPlaceHolder, params: args, async: true }; } } else if (this.match('[')) { this.context.isBindingElement = false; this.context.isAssignmentTarget = true; this.expect('['); var property = this.isolateCoverGrammar(this.parseExpression); this.expect(']'); expr = this.finalize(this.startNode(startToken), new Node.ComputedMemberExpression(expr, property)); } else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) { var quasi = this.parseTemplateLiteral(); expr = this.finalize(this.startNode(startToken), new Node.TaggedTemplateExpression(expr, quasi)); } else { break; } } this.context.allowIn = previousAllowIn; return expr; }; Parser.prototype.parseSuper = function () { var node = this.createNode(); this.expectKeyword('super'); if (!this.match('[') && !this.match('.')) { this.throwUnexpectedToken(this.lookahead); } return this.finalize(node, new Node.Super()); }; Parser.prototype.parseLeftHandSideExpression = function () { assert_1.assert(this.context.allowIn, 'callee of new expression always allow in keyword.'); var node = this.startNode(this.lookahead); var expr = (this.matchKeyword('super') && this.context.inFunctionBody) ? this.parseSuper() : this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression); while (true) { if (this.match('[')) { this.context.isBindingElement = false; this.context.isAssignmentTarget = true; this.expect('['); var property = this.isolateCoverGrammar(this.parseExpression); this.expect(']'); expr = this.finalize(node, new Node.ComputedMemberExpression(expr, property)); } else if (this.match('.')) { this.context.isBindingElement = false; this.context.isAssignmentTarget = true; this.expect('.'); var property = this.parseIdentifierName(); expr = this.finalize(node, new Node.StaticMemberExpression(expr, property)); } else if (this.lookahead.type === 10 /* Template */ && this.lookahead.head) { var quasi = this.parseTemplateLiteral(); expr = this.finalize(node, new Node.TaggedTemplateExpression(expr, quasi)); } else { break; } } return expr; }; // https://tc39.github.io/ecma262/#sec-update-expressions Parser.prototype.parseUpdateExpression = function () { var expr; var startToken = this.lookahead; if (this.match('++') || this.match('--')) { var node = this.startNode(startToken); var token = this.nextToken(); expr = this.inheritCoverGrammar(this.parseUnaryExpression); if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) { this.tolerateError(messages_1.Messages.StrictLHSPrefix); } if (!this.context.isAssignmentTarget) { this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); } var prefix = true; expr = this.finalize(node, new Node.UpdateExpression(token.value, expr, prefix)); this.context.isAssignmentTarget = false; this.context.isBindingElement = false; } else { expr = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall); if (!this.hasLineTerminator && this.lookahead.type === 7 /* Punctuator */) { if (this.match('++') || this.match('--')) { if (this.context.strict && expr.type === syntax_1.Syntax.Identifier && this.scanner.isRestrictedWord(expr.name)) { this.tolerateError(messages_1.Messages.StrictLHSPostfix); } if (!this.context.isAssignmentTarget) { this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); } this.context.isAssignmentTarget = false; this.context.isBindingElement = false; var operator = this.nextToken().value; var prefix = false; expr = this.finalize(this.startNode(startToken), new Node.UpdateExpression(operator, expr, prefix)); } } } return expr; }; // https://tc39.github.io/ecma262/#sec-unary-operators Parser.prototype.parseAwaitExpression = function () { var node = this.createNode(); this.nextToken(); var argument = this.parseUnaryExpression(); return this.finalize(node, new Node.AwaitExpression(argument)); }; Parser.prototype.parseUnaryExpression = function () { var expr; if (this.match('+') || this.match('-') || this.match('~') || this.match('!') || this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) { var node = this.startNode(this.lookahead); var token = this.nextToken(); expr = this.inheritCoverGrammar(this.parseUnaryExpression); expr = this.finalize(node, new Node.UnaryExpression(token.value, expr)); if (this.context.strict && expr.operator === 'delete' && expr.argument.type === syntax_1.Syntax.Identifier) { this.tolerateError(messages_1.Messages.StrictDelete); } this.context.isAssignmentTarget = false; this.context.isBindingElement = false; } else if (this.context.await && this.matchContextualKeyword('await')) { expr = this.parseAwaitExpression(); } else { expr = this.parseUpdateExpression(); } return expr; }; Parser.prototype.parseExponentiationExpression = function () { var startToken = this.lookahead; var expr = this.inheritCoverGrammar(this.parseUnaryExpression); if (expr.type !== syntax_1.Syntax.UnaryExpression && this.match('**')) { this.nextToken(); this.context.isAssignmentTarget = false; this.context.isBindingElement = false; var left = expr; var right = this.isolateCoverGrammar(this.parseExponentiationExpression); expr = this.finalize(this.startNode(startToken), new Node.BinaryExpression('**', left, right)); } return expr; }; // https://tc39.github.io/ecma262/#sec-exp-operator // https://tc39.github.io/ecma262/#sec-multiplicative-operators // https://tc39.github.io/ecma262/#sec-additive-operators // https://tc39.github.io/ecma262/#sec-bitwise-shift-operators // https://tc39.github.io/ecma262/#sec-relational-operators // https://tc39.github.io/ecma262/#sec-equality-operators // https://tc39.github.io/ecma262/#sec-binary-bitwise-operators // https://tc39.github.io/ecma262/#sec-binary-logical-operators Parser.prototype.binaryPrecedence = function (token) { var op = token.value; var precedence; if (token.type === 7 /* Punctuator */) { precedence = this.operatorPrecedence[op] || 0; } else if (token.type === 4 /* Keyword */) { precedence = (op === 'instanceof' || (this.context.allowIn && op === 'in')) ? 7 : 0; } else { precedence = 0; } return precedence; }; Parser.prototype.parseBinaryExpression = function () { var startToken = this.lookahead; var expr = this.inheritCoverGrammar(this.parseExponentiationExpression); var token = this.lookahead; var prec = this.binaryPrecedence(token); if (prec > 0) { this.nextToken(); this.context.isAssignmentTarget = false; this.context.isBindingElement = false; var markers = [startToken, this.lookahead]; var left = expr; var right = this.isolateCoverGrammar(this.parseExponentiationExpression); var stack = [left, token.value, right]; var precedences = [prec]; while (true) { prec = this.binaryPrecedence(this.lookahead); if (prec <= 0) { break; } // Reduce: make a binary expression from the three topmost entries. while ((stack.length > 2) && (prec <= precedences[precedences.length - 1])) { right = stack.pop(); var operator = stack.pop(); precedences.pop(); left = stack.pop(); markers.pop(); var node = this.startNode(markers[markers.length - 1]); stack.push(this.finalize(node, new Node.BinaryExpression(operator, left, right))); } // Shift. stack.push(this.nextToken().value); precedences.push(prec); markers.push(this.lookahead); stack.push(this.isolateCoverGrammar(this.parseExponentiationExpression)); } // Final reduce to clean-up the stack. var i = stack.length - 1; expr = stack[i]; var lastMarker = markers.pop(); while (i > 1) { var marker = markers.pop(); var lastLineStart = lastMarker && lastMarker.lineStart; var node = this.startNode(marker, lastLineStart); var operator = stack[i - 1]; expr = this.finalize(node, new Node.BinaryExpression(operator, stack[i - 2], expr)); i -= 2; lastMarker = marker; } } return expr; }; // https://tc39.github.io/ecma262/#sec-conditional-operator Parser.prototype.parseConditionalExpression = function () { var startToken = this.lookahead; var expr = this.inheritCoverGrammar(this.parseBinaryExpression); if (this.match('?')) { this.nextToken(); var previousAllowIn = this.context.allowIn; this.context.allowIn = true; var consequent = this.isolateCoverGrammar(this.parseAssignmentExpression); this.context.allowIn = previousAllowIn; this.expect(':'); var alternate = this.isolateCoverGrammar(this.parseAssignmentExpression); expr = this.finalize(this.startNode(startToken), new Node.ConditionalExpression(expr, consequent, alternate)); this.context.isAssignmentTarget = false; this.context.isBindingElement = false; } return expr; }; // https://tc39.github.io/ecma262/#sec-assignment-operators Parser.prototype.checkPatternParam = function (options, param) { switch (param.type) { case syntax_1.Syntax.Identifier: this.validateParam(options, param, param.name); break; case syntax_1.Syntax.RestElement: this.checkPatternParam(options, param.argument); break; case syntax_1.Syntax.AssignmentPattern: this.checkPatternParam(options, param.left); break; case syntax_1.Syntax.ArrayPattern: for (var i = 0; i < param.elements.length; i++) { if (param.elements[i] !== null) { this.checkPatternParam(options, param.elements[i]); } } break; case syntax_1.Syntax.ObjectPattern: for (var i = 0; i < param.properties.length; i++) { this.checkPatternParam(options, param.properties[i].value); } break; default: break; } options.simple = options.simple && (param instanceof Node.Identifier); }; Parser.prototype.reinterpretAsCoverFormalsList = function (expr) { var params = [expr]; var options; var asyncArrow = false; switch (expr.type) { case syntax_1.Syntax.Identifier: break; case ArrowParameterPlaceHolder: params = expr.params; asyncArrow = expr.async; break; default: return null; } options = { simple: true, paramSet: {} }; for (var i = 0; i < params.length; ++i) { var param = params[i]; if (param.type === syntax_1.Syntax.AssignmentPattern) { if (param.right.type === syntax_1.Syntax.YieldExpression) { if (param.right.argument) { this.throwUnexpectedToken(this.lookahead); } param.right.type = syntax_1.Syntax.Identifier; param.right.name = 'yield'; delete param.right.argument; delete param.right.delegate; } } else if (asyncArrow && param.type === syntax_1.Syntax.Identifier && param.name === 'await') { this.throwUnexpectedToken(this.lookahead); } this.checkPatternParam(options, param); params[i] = param; } if (this.context.strict || !this.context.allowYield) { for (var i = 0; i < params.length; ++i) { var param = params[i]; if (param.type === syntax_1.Syntax.YieldExpression) { this.throwUnexpectedToken(this.lookahead); } } } if (options.message === messages_1.Messages.StrictParamDupe) { var token = this.context.strict ? options.stricted : options.firstRestricted; this.throwUnexpectedToken(token, options.message); } return { simple: options.simple, params: params, stricted: options.stricted, firstRestricted: options.firstRestricted, message: options.message }; }; Parser.prototype.parseAssignmentExpression = function () { var expr; if (!this.context.allowYield && this.matchKeyword('yield')) { expr = this.parseYieldExpression(); } else { var startToken = this.lookahead; var token = startToken; expr = this.parseConditionalExpression(); if (token.type === 3 /* Identifier */ && (token.lineNumber === this.lookahead.lineNumber) && token.value === 'async') { if (this.lookahead.type === 3 /* Identifier */ || this.matchKeyword('yield')) { var arg = this.parsePrimaryExpression(); this.reinterpretExpressionAsPattern(arg); expr = { type: ArrowParameterPlaceHolder, params: [arg], async: true }; } } if (expr.type === ArrowParameterPlaceHolder || this.match('=>')) { // https://tc39.github.io/ecma262/#sec-arrow-function-definitions this.context.isAssignmentTarget = false; this.context.isBindingElement = false; var isAsync = expr.async; var list = this.reinterpretAsCoverFormalsList(expr); if (list) { if (this.hasLineTerminator) { this.tolerateUnexpectedToken(this.lookahead); } this.context.firstCoverInitializedNameError = null; var previousStrict = this.context.strict; var previousAllowStrictDirective = this.context.allowStrictDirective; this.context.allowStrictDirective = list.simple; var previousAllowYield = this.context.allowYield; var previousAwait = this.context.await; this.context.allowYield = true; this.context.await = isAsync; var node = this.startNode(startToken); this.expect('=>'); var body = void 0; if (this.match('{')) { var previousAllowIn = this.context.allowIn; this.context.allowIn = true; body = this.parseFunctionSourceElements(); this.context.allowIn = previousAllowIn; } else { body = this.isolateCoverGrammar(this.parseAssignmentExpression); } var expression = body.type !== syntax_1.Syntax.BlockStatement; if (this.context.strict && list.firstRestricted) { this.throwUnexpectedToken(list.firstRestricted, list.message); } if (this.context.strict && list.stricted) { this.tolerateUnexpectedToken(list.stricted, list.message); } expr = isAsync ? this.finalize(node, new Node.AsyncArrowFunctionExpression(list.params, body, expression)) : this.finalize(node, new Node.ArrowFunctionExpression(list.params, body, expression)); this.context.strict = previousStrict; this.context.allowStrictDirective = previousAllowStrictDirective; this.context.allowYield = previousAllowYield; this.context.await = previousAwait; } } else { if (this.matchAssign()) { if (!this.context.isAssignmentTarget) { this.tolerateError(messages_1.Messages.InvalidLHSInAssignment); } if (this.context.strict && expr.type === syntax_1.Syntax.Identifier) { var id = expr; if (this.scanner.isRestrictedWord(id.name)) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictLHSAssignment); } if (this.scanner.isStrictModeReservedWord(id.name)) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); } } if (!this.match('=')) { this.context.isAssignmentTarget = false; this.context.isBindingElement = false; } else { this.reinterpretExpressionAsPattern(expr); } token = this.nextToken(); var operator = token.value; var right = this.isolateCoverGrammar(this.parseAssignmentExpression); expr = this.finalize(this.startNode(startToken), new Node.AssignmentExpression(operator, expr, right)); this.context.firstCoverInitializedNameError = null; } } } return expr; }; // https://tc39.github.io/ecma262/#sec-comma-operator Parser.prototype.parseExpression = function () { var startToken = this.lookahead; var expr = this.isolateCoverGrammar(this.parseAssignmentExpression); if (this.match(',')) { var expressions = []; expressions.push(expr); while (this.lookahead.type !== 2 /* EOF */) { if (!this.match(',')) { break; } this.nextToken(); expressions.push(this.isolateCoverGrammar(this.parseAssignmentExpression)); } expr = this.finalize(this.startNode(startToken), new Node.SequenceExpression(expressions)); } return expr; }; // https://tc39.github.io/ecma262/#sec-block Parser.prototype.parseStatementListItem = function () { var statement; this.context.isAssignmentTarget = true; this.context.isBindingElement = true; if (this.lookahead.type === 4 /* Keyword */) { switch (this.lookahead.value) { case 'export': if (!this.context.isModule) { this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalExportDeclaration); } statement = this.parseExportDeclaration(); break; case 'import': if (!this.context.isModule) { this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.IllegalImportDeclaration); } statement = this.parseImportDeclaration(); break; case 'const': statement = this.parseLexicalDeclaration({ inFor: false }); break; case 'function': statement = this.parseFunctionDeclaration(); break; case 'class': statement = this.parseClassDeclaration(); break; case 'let': statement = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({ inFor: false }) : this.parseStatement(); break; default: statement = this.parseStatement(); break; } } else { statement = this.parseStatement(); } return statement; }; Parser.prototype.parseBlock = function () { var node = this.createNode(); this.expect('{'); var block = []; while (true) { if (this.match('}')) { break; } block.push(this.parseStatementListItem()); } this.expect('}'); return this.finalize(node, new Node.BlockStatement(block)); }; // https://tc39.github.io/ecma262/#sec-let-and-const-declarations Parser.prototype.parseLexicalBinding = function (kind, options) { var node = this.createNode(); var params = []; var id = this.parsePattern(params, kind); if (this.context.strict && id.type === syntax_1.Syntax.Identifier) { if (this.scanner.isRestrictedWord(id.name)) { this.tolerateError(messages_1.Messages.StrictVarName); } } var init = null; if (kind === 'const') { if (!this.matchKeyword('in') && !this.matchContextualKeyword('of')) { if (this.match('=')) { this.nextToken(); init = this.isolateCoverGrammar(this.parseAssignmentExpression); } else { this.throwError(messages_1.Messages.DeclarationMissingInitializer, 'const'); } } } else if ((!options.inFor && id.type !== syntax_1.Syntax.Identifier) || this.match('=')) { this.expect('='); init = this.isolateCoverGrammar(this.parseAssignmentExpression); } return this.finalize(node, new Node.VariableDeclarator(id, init)); }; Parser.prototype.parseBindingList = function (kind, options) { var list = [this.parseLexicalBinding(kind, options)]; while (this.match(',')) { this.nextToken(); list.push(this.parseLexicalBinding(kind, options)); } return list; }; Parser.prototype.isLexicalDeclaration = function () { var state = this.scanner.saveState(); this.scanner.scanComments(); var next = this.scanner.lex(); this.scanner.restoreState(state); return (next.type === 3 /* Identifier */) || (next.type === 7 /* Punctuator */ && next.value === '[') || (next.type === 7 /* Punctuator */ && next.value === '{') || (next.type === 4 /* Keyword */ && next.value === 'let') || (next.type === 4 /* Keyword */ && next.value === 'yield'); }; Parser.prototype.parseLexicalDeclaration = function (options) { var node = this.createNode(); var kind = this.nextToken().value; assert_1.assert(kind === 'let' || kind === 'const', 'Lexical declaration must be either let or const'); var declarations = this.parseBindingList(kind, options); this.consumeSemicolon(); return this.finalize(node, new Node.VariableDeclaration(declarations, kind)); }; // https://tc39.github.io/ecma262/#sec-destructuring-binding-patterns Parser.prototype.parseBindingRestElement = function (params, kind) { var node = this.createNode(); this.expect('...'); var arg = this.parsePattern(params, kind); return this.finalize(node, new Node.RestElement(arg)); }; Parser.prototype.parseArrayPattern = function (params, kind) { var node = this.createNode(); this.expect('['); var elements = []; while (!this.match(']')) { if (this.match(',')) { this.nextToken(); elements.push(null); } else { if (this.match('...')) { elements.push(this.parseBindingRestElement(params, kind)); break; } else { elements.push(this.parsePatternWithDefault(params, kind)); } if (!this.match(']')) { this.expect(','); } } } this.expect(']'); return this.finalize(node, new Node.ArrayPattern(elements)); }; Parser.prototype.parsePropertyPattern = function (params, kind) { var node = this.createNode(); var computed = false; var shorthand = false; var method = false; var key; var value; if (this.lookahead.type === 3 /* Identifier */) { var keyToken = this.lookahead; key = this.parseVariableIdentifier(); var init = this.finalize(node, new Node.Identifier(keyToken.value)); if (this.match('=')) { params.push(keyToken); shorthand = true; this.nextToken(); var expr = this.parseAssignmentExpression(); value = this.finalize(this.startNode(keyToken), new Node.AssignmentPattern(init, expr)); } else if (!this.match(':')) { params.push(keyToken); shorthand = true; value = init; } else { this.expect(':'); value = this.parsePatternWithDefault(params, kind); } } else { computed = this.match('['); key = this.parseObjectPropertyKey(); this.expect(':'); value = this.parsePatternWithDefault(params, kind); } return this.finalize(node, new Node.Property('init', key, computed, value, method, shorthand)); }; Parser.prototype.parseObjectPattern = function (params, kind) { var node = this.createNode(); var properties = []; this.expect('{'); while (!this.match('}')) { properties.push(this.parsePropertyPattern(params, kind)); if (!this.match('}')) { this.expect(','); } } this.expect('}'); return this.finalize(node, new Node.ObjectPattern(properties)); }; Parser.prototype.parsePattern = function (params, kind) { var pattern; if (this.match('[')) { pattern = this.parseArrayPattern(params, kind); } else if (this.match('{')) { pattern = this.parseObjectPattern(params, kind); } else { if (this.matchKeyword('let') && (kind === 'const' || kind === 'let')) { this.tolerateUnexpectedToken(this.lookahead, messages_1.Messages.LetInLexicalBinding); } params.push(this.lookahead); pattern = this.parseVariableIdentifier(kind); } return pattern; }; Parser.prototype.parsePatternWithDefault = function (params, kind) { var startToken = this.lookahead; var pattern = this.parsePattern(params, kind); if (this.match('=')) { this.nextToken(); var previousAllowYield = this.context.allowYield; this.context.allowYield = true; var right = this.isolateCoverGrammar(this.parseAssignmentExpression); this.context.allowYield = previousAllowYield; pattern = this.finalize(this.startNode(startToken), new Node.AssignmentPattern(pattern, right)); } return pattern; }; // https://tc39.github.io/ecma262/#sec-variable-statement Parser.prototype.parseVariableIdentifier = function (kind) { var node = this.createNode(); var token = this.nextToken(); if (token.type === 4 /* Keyword */ && token.value === 'yield') { if (this.context.strict) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); } else if (!this.context.allowYield) { this.throwUnexpectedToken(token); } } else if (token.type !== 3 /* Identifier */) { if (this.context.strict && token.type === 4 /* Keyword */ && this.scanner.isStrictModeReservedWord(token.value)) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictReservedWord); } else { if (this.context.strict || token.value !== 'let' || kind !== 'var') { this.throwUnexpectedToken(token); } } } else if ((this.context.isModule || this.context.await) && token.type === 3 /* Identifier */ && token.value === 'await') { this.tolerateUnexpectedToken(token); } return this.finalize(node, new Node.Identifier(token.value)); }; Parser.prototype.parseVariableDeclaration = function (options) { var node = this.createNode(); var params = []; var id = this.parsePattern(params, 'var'); if (this.context.strict && id.type === syntax_1.Syntax.Identifier) { if (this.scanner.isRestrictedWord(id.name)) { this.tolerateError(messages_1.Messages.StrictVarName); } } var init = null; if (this.match('=')) { this.nextToken(); init = this.isolateCoverGrammar(this.parseAssignmentExpression); } else if (id.type !== syntax_1.Syntax.Identifier && !options.inFor) { this.expect('='); } return this.finalize(node, new Node.VariableDeclarator(id, init)); }; Parser.prototype.parseVariableDeclarationList = function (options) { var opt = { inFor: options.inFor }; var list = []; list.push(this.parseVariableDeclaration(opt)); while (this.match(',')) { this.nextToken(); list.push(this.parseVariableDeclaration(opt)); } return list; }; Parser.prototype.parseVariableStatement = function () { var node = this.createNode(); this.expectKeyword('var'); var declarations = this.parseVariableDeclarationList({ inFor: false }); this.consumeSemicolon(); return this.finalize(node, new Node.VariableDeclaration(declarations, 'var')); }; // https://tc39.github.io/ecma262/#sec-empty-statement Parser.prototype.parseEmptyStatement = function () { var node = this.createNode(); this.expect(';'); return this.finalize(node, new Node.EmptyStatement()); }; // https://tc39.github.io/ecma262/#sec-expression-statement Parser.prototype.parseExpressionStatement = function () { var node = this.createNode(); var expr = this.parseExpression(); this.consumeSemicolon(); return this.finalize(node, new Node.ExpressionStatement(expr)); }; // https://tc39.github.io/ecma262/#sec-if-statement Parser.prototype.parseIfClause = function () { if (this.context.strict && this.matchKeyword('function')) { this.tolerateError(messages_1.Messages.StrictFunction); } return this.parseStatement(); }; Parser.prototype.parseIfStatement = function () { var node = this.createNode(); var consequent; var alternate = null; this.expectKeyword('if'); this.expect('('); var test = this.parseExpression(); if (!this.match(')') && this.config.tolerant) { this.tolerateUnexpectedToken(this.nextToken()); consequent = this.finalize(this.createNode(), new Node.EmptyStatement()); } else { this.expect(')'); consequent = this.parseIfClause(); if (this.matchKeyword('else')) { this.nextToken(); alternate = this.parseIfClause(); } } return this.finalize(node, new Node.IfStatement(test, consequent, alternate)); }; // https://tc39.github.io/ecma262/#sec-do-while-statement Parser.prototype.parseDoWhileStatement = function () { var node = this.createNode(); this.expectKeyword('do'); var previousInIteration = this.context.inIteration; this.context.inIteration = true; var body = this.parseStatement(); this.context.inIteration = previousInIteration; this.expectKeyword('while'); this.expect('('); var test = this.parseExpression(); if (!this.match(')') && this.config.tolerant) { this.tolerateUnexpectedToken(this.nextToken()); } else { this.expect(')'); if (this.match(';')) { this.nextToken(); } } return this.finalize(node, new Node.DoWhileStatement(body, test)); }; // https://tc39.github.io/ecma262/#sec-while-statement Parser.prototype.parseWhileStatement = function () { var node = this.createNode(); var body; this.expectKeyword('while'); this.expect('('); var test = this.parseExpression(); if (!this.match(')') && this.config.tolerant) { this.tolerateUnexpectedToken(this.nextToken()); body = this.finalize(this.createNode(), new Node.EmptyStatement()); } else { this.expect(')'); var previousInIteration = this.context.inIteration; this.context.inIteration = true; body = this.parseStatement(); this.context.inIteration = previousInIteration; } return this.finalize(node, new Node.WhileStatement(test, body)); }; // https://tc39.github.io/ecma262/#sec-for-statement // https://tc39.github.io/ecma262/#sec-for-in-and-for-of-statements Parser.prototype.parseForStatement = function () { var init = null; var test = null; var update = null; var forIn = true; var left, right; var node = this.createNode(); this.expectKeyword('for'); this.expect('('); if (this.match(';')) { this.nextToken(); } else { if (this.matchKeyword('var')) { init = this.createNode(); this.nextToken(); var previousAllowIn = this.context.allowIn; this.context.allowIn = false; var declarations = this.parseVariableDeclarationList({ inFor: true }); this.context.allowIn = previousAllowIn; if (declarations.length === 1 && this.matchKeyword('in')) { var decl = declarations[0]; if (decl.init && (decl.id.type === syntax_1.Syntax.ArrayPattern || decl.id.type === syntax_1.Syntax.ObjectPattern || this.context.strict)) { this.tolerateError(messages_1.Messages.ForInOfLoopInitializer, 'for-in'); } init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); this.nextToken(); left = init; right = this.parseExpression(); init = null; } else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) { init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); this.nextToken(); left = init; right = this.parseAssignmentExpression(); init = null; forIn = false; } else { init = this.finalize(init, new Node.VariableDeclaration(declarations, 'var')); this.expect(';'); } } else if (this.matchKeyword('const') || this.matchKeyword('let')) { init = this.createNode(); var kind = this.nextToken().value; if (!this.context.strict && this.lookahead.value === 'in') { init = this.finalize(init, new Node.Identifier(kind)); this.nextToken(); left = init; right = this.parseExpression(); init = null; } else { var previousAllowIn = this.context.allowIn; this.context.allowIn = false; var declarations = this.parseBindingList(kind, { inFor: true }); this.context.allowIn = previousAllowIn; if (declarations.length === 1 && declarations[0].init === null && this.matchKeyword('in')) { init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); this.nextToken(); left = init; right = this.parseExpression(); init = null; } else if (declarations.length === 1 && declarations[0].init === null && this.matchContextualKeyword('of')) { init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); this.nextToken(); left = init; right = this.parseAssignmentExpression(); init = null; forIn = false; } else { this.consumeSemicolon(); init = this.finalize(init, new Node.VariableDeclaration(declarations, kind)); } } } else { var initStartToken = this.lookahead; var previousAllowIn = this.context.allowIn; this.context.allowIn = false; init = this.inheritCoverGrammar(this.parseAssignmentExpression); this.context.allowIn = previousAllowIn; if (this.matchKeyword('in')) { if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) { this.tolerateError(messages_1.Messages.InvalidLHSInForIn); } this.nextToken(); this.reinterpretExpressionAsPattern(init); left = init; right = this.parseExpression(); init = null; } else if (this.matchContextualKeyword('of')) { if (!this.context.isAssignmentTarget || init.type === syntax_1.Syntax.AssignmentExpression) { this.tolerateError(messages_1.Messages.InvalidLHSInForLoop); } this.nextToken(); this.reinterpretExpressionAsPattern(init); left = init; right = this.parseAssignmentExpression(); init = null; forIn = false; } else { if (this.match(',')) { var initSeq = [init]; while (this.match(',')) { this.nextToken(); initSeq.push(this.isolateCoverGrammar(this.parseAssignmentExpression)); } init = this.finalize(this.startNode(initStartToken), new Node.SequenceExpression(initSeq)); } this.expect(';'); } } } if (typeof left === 'undefined') { if (!this.match(';')) { test = this.parseExpression(); } this.expect(';'); if (!this.match(')')) { update = this.parseExpression(); } } var body; if (!this.match(')') && this.config.tolerant) { this.tolerateUnexpectedToken(this.nextToken()); body = this.finalize(this.createNode(), new Node.EmptyStatement()); } else { this.expect(')'); var previousInIteration = this.context.inIteration; this.context.inIteration = true; body = this.isolateCoverGrammar(this.parseStatement); this.context.inIteration = previousInIteration; } return (typeof left === 'undefined') ? this.finalize(node, new Node.ForStatement(init, test, update, body)) : forIn ? this.finalize(node, new Node.ForInStatement(left, right, body)) : this.finalize(node, new Node.ForOfStatement(left, right, body)); }; // https://tc39.github.io/ecma262/#sec-continue-statement Parser.prototype.parseContinueStatement = function () { var node = this.createNode(); this.expectKeyword('continue'); var label = null; if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) { var id = this.parseVariableIdentifier(); label = id; var key = '$' + id.name; if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { this.throwError(messages_1.Messages.UnknownLabel, id.name); } } this.consumeSemicolon(); if (label === null && !this.context.inIteration) { this.throwError(messages_1.Messages.IllegalContinue); } return this.finalize(node, new Node.ContinueStatement(label)); }; // https://tc39.github.io/ecma262/#sec-break-statement Parser.prototype.parseBreakStatement = function () { var node = this.createNode(); this.expectKeyword('break'); var label = null; if (this.lookahead.type === 3 /* Identifier */ && !this.hasLineTerminator) { var id = this.parseVariableIdentifier(); var key = '$' + id.name; if (!Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { this.throwError(messages_1.Messages.UnknownLabel, id.name); } label = id; } this.consumeSemicolon(); if (label === null && !this.context.inIteration && !this.context.inSwitch) { this.throwError(messages_1.Messages.IllegalBreak); } return this.finalize(node, new Node.BreakStatement(label)); }; // https://tc39.github.io/ecma262/#sec-return-statement Parser.prototype.parseReturnStatement = function () { if (!this.context.inFunctionBody) { this.tolerateError(messages_1.Messages.IllegalReturn); } var node = this.createNode(); this.expectKeyword('return'); var hasArgument = (!this.match(';') && !this.match('}') && !this.hasLineTerminator && this.lookahead.type !== 2 /* EOF */) || this.lookahead.type === 8 /* StringLiteral */ || this.lookahead.type === 10 /* Template */; var argument = hasArgument ? this.parseExpression() : null; this.consumeSemicolon(); return this.finalize(node, new Node.ReturnStatement(argument)); }; // https://tc39.github.io/ecma262/#sec-with-statement Parser.prototype.parseWithStatement = function () { if (this.context.strict) { this.tolerateError(messages_1.Messages.StrictModeWith); } var node = this.createNode(); var body; this.expectKeyword('with'); this.expect('('); var object = this.parseExpression(); if (!this.match(')') && this.config.tolerant) { this.tolerateUnexpectedToken(this.nextToken()); body = this.finalize(this.createNode(), new Node.EmptyStatement()); } else { this.expect(')'); body = this.parseStatement(); } return this.finalize(node, new Node.WithStatement(object, body)); }; // https://tc39.github.io/ecma262/#sec-switch-statement Parser.prototype.parseSwitchCase = function () { var node = this.createNode(); var test; if (this.matchKeyword('default')) { this.nextToken(); test = null; } else { this.expectKeyword('case'); test = this.parseExpression(); } this.expect(':'); var consequent = []; while (true) { if (this.match('}') || this.matchKeyword('default') || this.matchKeyword('case')) { break; } consequent.push(this.parseStatementListItem()); } return this.finalize(node, new Node.SwitchCase(test, consequent)); }; Parser.prototype.parseSwitchStatement = function () { var node = this.createNode(); this.expectKeyword('switch'); this.expect('('); var discriminant = this.parseExpression(); this.expect(')'); var previousInSwitch = this.context.inSwitch; this.context.inSwitch = true; var cases = []; var defaultFound = false; this.expect('{'); while (true) { if (this.match('}')) { break; } var clause = this.parseSwitchCase(); if (clause.test === null) { if (defaultFound) { this.throwError(messages_1.Messages.MultipleDefaultsInSwitch); } defaultFound = true; } cases.push(clause); } this.expect('}'); this.context.inSwitch = previousInSwitch; return this.finalize(node, new Node.SwitchStatement(discriminant, cases)); }; // https://tc39.github.io/ecma262/#sec-labelled-statements Parser.prototype.parseLabelledStatement = function () { var node = this.createNode(); var expr = this.parseExpression(); var statement; if ((expr.type === syntax_1.Syntax.Identifier) && this.match(':')) { this.nextToken(); var id = expr; var key = '$' + id.name; if (Object.prototype.hasOwnProperty.call(this.context.labelSet, key)) { this.throwError(messages_1.Messages.Redeclaration, 'Label', id.name); } this.context.labelSet[key] = true; var body = void 0; if (this.matchKeyword('class')) { this.tolerateUnexpectedToken(this.lookahead); body = this.parseClassDeclaration(); } else if (this.matchKeyword('function')) { var token = this.lookahead; var declaration = this.parseFunctionDeclaration(); if (this.context.strict) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunction); } else if (declaration.generator) { this.tolerateUnexpectedToken(token, messages_1.Messages.GeneratorInLegacyContext); } body = declaration; } else { body = this.parseStatement(); } delete this.context.labelSet[key]; statement = new Node.LabeledStatement(id, body); } else { this.consumeSemicolon(); statement = new Node.ExpressionStatement(expr); } return this.finalize(node, statement); }; // https://tc39.github.io/ecma262/#sec-throw-statement Parser.prototype.parseThrowStatement = function () { var node = this.createNode(); this.expectKeyword('throw'); if (this.hasLineTerminator) { this.throwError(messages_1.Messages.NewlineAfterThrow); } var argument = this.parseExpression(); this.consumeSemicolon(); return this.finalize(node, new Node.ThrowStatement(argument)); }; // https://tc39.github.io/ecma262/#sec-try-statement Parser.prototype.parseCatchClause = function () { var node = this.createNode(); this.expectKeyword('catch'); this.expect('('); if (this.match(')')) { this.throwUnexpectedToken(this.lookahead); } var params = []; var param = this.parsePattern(params); var paramMap = {}; for (var i = 0; i < params.length; i++) { var key = '$' + params[i].value; if (Object.prototype.hasOwnProperty.call(paramMap, key)) { this.tolerateError(messages_1.Messages.DuplicateBinding, params[i].value); } paramMap[key] = true; } if (this.context.strict && param.type === syntax_1.Syntax.Identifier) { if (this.scanner.isRestrictedWord(param.name)) { this.tolerateError(messages_1.Messages.StrictCatchVariable); } } this.expect(')'); var body = this.parseBlock(); return this.finalize(node, new Node.CatchClause(param, body)); }; Parser.prototype.parseFinallyClause = function () { this.expectKeyword('finally'); return this.parseBlock(); }; Parser.prototype.parseTryStatement = function () { var node = this.createNode(); this.expectKeyword('try'); var block = this.parseBlock(); var handler = this.matchKeyword('catch') ? this.parseCatchClause() : null; var finalizer = this.matchKeyword('finally') ? this.parseFinallyClause() : null; if (!handler && !finalizer) { this.throwError(messages_1.Messages.NoCatchOrFinally); } return this.finalize(node, new Node.TryStatement(block, handler, finalizer)); }; // https://tc39.github.io/ecma262/#sec-debugger-statement Parser.prototype.parseDebuggerStatement = function () { var node = this.createNode(); this.expectKeyword('debugger'); this.consumeSemicolon(); return this.finalize(node, new Node.DebuggerStatement()); }; // https://tc39.github.io/ecma262/#sec-ecmascript-language-statements-and-declarations Parser.prototype.parseStatement = function () { var statement; switch (this.lookahead.type) { case 1 /* BooleanLiteral */: case 5 /* NullLiteral */: case 6 /* NumericLiteral */: case 8 /* StringLiteral */: case 10 /* Template */: case 9 /* RegularExpression */: statement = this.parseExpressionStatement(); break; case 7 /* Punctuator */: var value = this.lookahead.value; if (value === '{') { statement = this.parseBlock(); } else if (value === '(') { statement = this.parseExpressionStatement(); } else if (value === ';') { statement = this.parseEmptyStatement(); } else { statement = this.parseExpressionStatement(); } break; case 3 /* Identifier */: statement = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement(); break; case 4 /* Keyword */: switch (this.lookahead.value) { case 'break': statement = this.parseBreakStatement(); break; case 'continue': statement = this.parseContinueStatement(); break; case 'debugger': statement = this.parseDebuggerStatement(); break; case 'do': statement = this.parseDoWhileStatement(); break; case 'for': statement = this.parseForStatement(); break; case 'function': statement = this.parseFunctionDeclaration(); break; case 'if': statement = this.parseIfStatement(); break; case 'return': statement = this.parseReturnStatement(); break; case 'switch': statement = this.parseSwitchStatement(); break; case 'throw': statement = this.parseThrowStatement(); break; case 'try': statement = this.parseTryStatement(); break; case 'var': statement = this.parseVariableStatement(); break; case 'while': statement = this.parseWhileStatement(); break; case 'with': statement = this.parseWithStatement(); break; default: statement = this.parseExpressionStatement(); break; } break; default: statement = this.throwUnexpectedToken(this.lookahead); } return statement; }; // https://tc39.github.io/ecma262/#sec-function-definitions Parser.prototype.parseFunctionSourceElements = function () { var node = this.createNode(); this.expect('{'); var body = this.parseDirectivePrologues(); var previousLabelSet = this.context.labelSet; var previousInIteration = this.context.inIteration; var previousInSwitch = this.context.inSwitch; var previousInFunctionBody = this.context.inFunctionBody; this.context.labelSet = {}; this.context.inIteration = false; this.context.inSwitch = false; this.context.inFunctionBody = true; while (this.lookahead.type !== 2 /* EOF */) { if (this.match('}')) { break; } body.push(this.parseStatementListItem()); } this.expect('}'); this.context.labelSet = previousLabelSet; this.context.inIteration = previousInIteration; this.context.inSwitch = previousInSwitch; this.context.inFunctionBody = previousInFunctionBody; return this.finalize(node, new Node.BlockStatement(body)); }; Parser.prototype.validateParam = function (options, param, name) { var key = '$' + name; if (this.context.strict) { if (this.scanner.isRestrictedWord(name)) { options.stricted = param; options.message = messages_1.Messages.StrictParamName; } if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { options.stricted = param; options.message = messages_1.Messages.StrictParamDupe; } } else if (!options.firstRestricted) { if (this.scanner.isRestrictedWord(name)) { options.firstRestricted = param; options.message = messages_1.Messages.StrictParamName; } else if (this.scanner.isStrictModeReservedWord(name)) { options.firstRestricted = param; options.message = messages_1.Messages.StrictReservedWord; } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) { options.stricted = param; options.message = messages_1.Messages.StrictParamDupe; } } /* istanbul ignore next */ if (typeof Object.defineProperty === 'function') { Object.defineProperty(options.paramSet, key, { value: true, enumerable: true, writable: true, configurable: true }); } else { options.paramSet[key] = true; } }; Parser.prototype.parseRestElement = function (params) { var node = this.createNode(); this.expect('...'); var arg = this.parsePattern(params); if (this.match('=')) { this.throwError(messages_1.Messages.DefaultRestParameter); } if (!this.match(')')) { this.throwError(messages_1.Messages.ParameterAfterRestParameter); } return this.finalize(node, new Node.RestElement(arg)); }; Parser.prototype.parseFormalParameter = function (options) { var params = []; var param = this.match('...') ? this.parseRestElement(params) : this.parsePatternWithDefault(params); for (var i = 0; i < params.length; i++) { this.validateParam(options, params[i], params[i].value); } options.simple = options.simple && (param instanceof Node.Identifier); options.params.push(param); }; Parser.prototype.parseFormalParameters = function (firstRestricted) { var options; options = { simple: true, params: [], firstRestricted: firstRestricted }; this.expect('('); if (!this.match(')')) { options.paramSet = {}; while (this.lookahead.type !== 2 /* EOF */) { this.parseFormalParameter(options); if (this.match(')')) { break; } this.expect(','); if (this.match(')')) { break; } } } this.expect(')'); return { simple: options.simple, params: options.params, stricted: options.stricted, firstRestricted: options.firstRestricted, message: options.message }; }; Parser.prototype.matchAsyncFunction = function () { var match = this.matchContextualKeyword('async'); if (match) { var state = this.scanner.saveState(); this.scanner.scanComments(); var next = this.scanner.lex(); this.scanner.restoreState(state); match = (state.lineNumber === next.lineNumber) && (next.type === 4 /* Keyword */) && (next.value === 'function'); } return match; }; Parser.prototype.parseFunctionDeclaration = function (identifierIsOptional) { var node = this.createNode(); var isAsync = this.matchContextualKeyword('async'); if (isAsync) { this.nextToken(); } this.expectKeyword('function'); var isGenerator = isAsync ? false : this.match('*'); if (isGenerator) { this.nextToken(); } var message; var id = null; var firstRestricted = null; if (!identifierIsOptional || !this.match('(')) { var token = this.lookahead; id = this.parseVariableIdentifier(); if (this.context.strict) { if (this.scanner.isRestrictedWord(token.value)) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName); } } else { if (this.scanner.isRestrictedWord(token.value)) { firstRestricted = token; message = messages_1.Messages.StrictFunctionName; } else if (this.scanner.isStrictModeReservedWord(token.value)) { firstRestricted = token; message = messages_1.Messages.StrictReservedWord; } } } var previousAllowAwait = this.context.await; var previousAllowYield = this.context.allowYield; this.context.await = isAsync; this.context.allowYield = !isGenerator; var formalParameters = this.parseFormalParameters(firstRestricted); var params = formalParameters.params; var stricted = formalParameters.stricted; firstRestricted = formalParameters.firstRestricted; if (formalParameters.message) { message = formalParameters.message; } var previousStrict = this.context.strict; var previousAllowStrictDirective = this.context.allowStrictDirective; this.context.allowStrictDirective = formalParameters.simple; var body = this.parseFunctionSourceElements(); if (this.context.strict && firstRestricted) { this.throwUnexpectedToken(firstRestricted, message); } if (this.context.strict && stricted) { this.tolerateUnexpectedToken(stricted, message); } this.context.strict = previousStrict; this.context.allowStrictDirective = previousAllowStrictDirective; this.context.await = previousAllowAwait; this.context.allowYield = previousAllowYield; return isAsync ? this.finalize(node, new Node.AsyncFunctionDeclaration(id, params, body)) : this.finalize(node, new Node.FunctionDeclaration(id, params, body, isGenerator)); }; Parser.prototype.parseFunctionExpression = function () { var node = this.createNode(); var isAsync = this.matchContextualKeyword('async'); if (isAsync) { this.nextToken(); } this.expectKeyword('function'); var isGenerator = isAsync ? false : this.match('*'); if (isGenerator) { this.nextToken(); } var message; var id = null; var firstRestricted; var previousAllowAwait = this.context.await; var previousAllowYield = this.context.allowYield; this.context.await = isAsync; this.context.allowYield = !isGenerator; if (!this.match('(')) { var token = this.lookahead; id = (!this.context.strict && !isGenerator && this.matchKeyword('yield')) ? this.parseIdentifierName() : this.parseVariableIdentifier(); if (this.context.strict) { if (this.scanner.isRestrictedWord(token.value)) { this.tolerateUnexpectedToken(token, messages_1.Messages.StrictFunctionName); } } else { if (this.scanner.isRestrictedWord(token.value)) { firstRestricted = token; message = messages_1.Messages.StrictFunctionName; } else if (this.scanner.isStrictModeReservedWord(token.value)) { firstRestricted = token; message = messages_1.Messages.StrictReservedWord; } } } var formalParameters = this.parseFormalParameters(firstRestricted); var params = formalParameters.params; var stricted = formalParameters.stricted; firstRestricted = formalParameters.firstRestricted; if (formalParameters.message) { message = formalParameters.message; } var previousStrict = this.context.strict; var previousAllowStrictDirective = this.context.allowStrictDirective; this.context.allowStrictDirective = formalParameters.simple; var body = this.parseFunctionSourceElements(); if (this.context.strict && firstRestricted) { this.throwUnexpectedToken(firstRestricted, message); } if (this.context.strict && stricted) { this.tolerateUnexpectedToken(stricted, message); } this.context.strict = previousStrict; this.context.allowStrictDirective = previousAllowStrictDirective; this.context.await = previousAllowAwait; this.context.allowYield = previousAllowYield; return isAsync ? this.finalize(node, new Node.AsyncFunctionExpression(id, params, body)) : this.finalize(node, new Node.FunctionExpression(id, params, body, isGenerator)); }; // https://tc39.github.io/ecma262/#sec-directive-prologues-and-the-use-strict-directive Parser.prototype.parseDirective = function () { var token = this.lookahead; var node = this.createNode(); var expr = this.parseExpression(); var directive = (expr.type === syntax_1.Syntax.Literal) ? this.getTokenRaw(token).slice(1, -1) : null; this.consumeSemicolon(); return this.finalize(node, directive ? new Node.Directive(expr, directive) : new Node.ExpressionStatement(expr)); }; Parser.prototype.parseDirectivePrologues = function () { var firstRestricted = null; var body = []; while (true) { var token = this.lookahead; if (token.type !== 8 /* StringLiteral */) { break; } var statement = this.parseDirective(); body.push(statement); var directive = statement.directive; if (typeof directive !== 'string') { break; } if (directive === 'use strict') { this.context.strict = true; if (firstRestricted) { this.tolerateUnexpectedToken(firstRestricted, messages_1.Messages.StrictOctalLiteral); } if (!this.context.allowStrictDirective) { this.tolerateUnexpectedToken(token, messages_1.Messages.IllegalLanguageModeDirective); } } else { if (!firstRestricted && token.octal) { firstRestricted = token; } } } return body; }; // https://tc39.github.io/ecma262/#sec-method-definitions Parser.prototype.qualifiedPropertyName = function (token) { switch (token.type) { case 3 /* Identifier */: case 8 /* StringLiteral */: case 1 /* BooleanLiteral */: case 5 /* NullLiteral */: case 6 /* NumericLiteral */: case 4 /* Keyword */: return true; case 7 /* Punctuator */: return token.value === '['; default: break; } return false; }; Parser.prototype.parseGetterMethod = function () { var node = this.createNode(); var isGenerator = false; var previousAllowYield = this.context.allowYield; this.context.allowYield = !isGenerator; var formalParameters = this.parseFormalParameters(); if (formalParameters.params.length > 0) { this.tolerateError(messages_1.Messages.BadGetterArity); } var method = this.parsePropertyMethod(formalParameters); this.context.allowYield = previousAllowYield; return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator)); }; Parser.prototype.parseSetterMethod = function () { var node = this.createNode(); var isGenerator = false; var previousAllowYield = this.context.allowYield; this.context.allowYield = !isGenerator; var formalParameters = this.parseFormalParameters(); if (formalParameters.params.length !== 1) { this.tolerateError(messages_1.Messages.BadSetterArity); } else if (formalParameters.params[0] instanceof Node.RestElement) { this.tolerateError(messages_1.Messages.BadSetterRestParameter); } var method = this.parsePropertyMethod(formalParameters); this.context.allowYield = previousAllowYield; return this.finalize(node, new Node.FunctionExpression(null, formalParameters.params, method, isGenerator)); }; Parser.prototype.parseGeneratorMethod = function () { var node = this.createNode(); var isGenerator = true; var previousAllowYield = this.context.allowYield; this.context.allowYield = true; var params = this.parseFormalParameters(); this.context.allowYield = false; var method = this.parsePropertyMethod(params); this.context.allowYield = previousAllowYield; return this.finalize(node, new Node.FunctionExpression(null, params.params, method, isGenerator)); }; // https://tc39.github.io/ecma262/#sec-generator-function-definitions Parser.prototype.isStartOfExpression = function () { var start = true; var value = this.lookahead.value; switch (this.lookahead.type) { case 7 /* Punctuator */: start = (value === '[') || (value === '(') || (value === '{') || (value === '+') || (value === '-') || (value === '!') || (value === '~') || (value === '++') || (value === '--') || (value === '/') || (value === '/='); // regular expression literal break; case 4 /* Keyword */: start = (value === 'class') || (value === 'delete') || (value === 'function') || (value === 'let') || (value === 'new') || (value === 'super') || (value === 'this') || (value === 'typeof') || (value === 'void') || (value === 'yield'); break; default: break; } return start; }; Parser.prototype.parseYieldExpression = function () { var node = this.createNode(); this.expectKeyword('yield'); var argument = null; var delegate = false; if (!this.hasLineTerminator) { var previousAllowYield = this.context.allowYield; this.context.allowYield = false; delegate = this.match('*'); if (delegate) { this.nextToken(); argument = this.parseAssignmentExpression(); } else if (this.isStartOfExpression()) { argument = this.parseAssignmentExpression(); } this.context.allowYield = previousAllowYield; } return this.finalize(node, new Node.YieldExpression(argument, delegate)); }; // https://tc39.github.io/ecma262/#sec-class-definitions Parser.prototype.parseClassElement = function (hasConstructor) { var token = this.lookahead; var node = this.createNode(); var kind = ''; var key = null; var value = null; var computed = false; var method = false; var isStatic = false; var isAsync = false; if (this.match('*')) { this.nextToken(); } else { computed = this.match('['); key = this.parseObjectPropertyKey(); var id = key; if (id.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*'))) { token = this.lookahead; isStatic = true; computed = this.match('['); if (this.match('*')) { this.nextToken(); } else { key = this.parseObjectPropertyKey(); } } if ((token.type === 3 /* Identifier */) && !this.hasLineTerminator && (token.value === 'async')) { var punctuator = this.lookahead.value; if (punctuator !== ':' && punctuator !== '(' && punctuator !== '*') { isAsync = true; token = this.lookahead; key = this.parseObjectPropertyKey(); if (token.type === 3 /* Identifier */ && token.value === 'constructor') { this.tolerateUnexpectedToken(token, messages_1.Messages.ConstructorIsAsync); } } } } var lookaheadPropertyKey = this.qualifiedPropertyName(this.lookahead); if (token.type === 3 /* Identifier */) { if (token.value === 'get' && lookaheadPropertyKey) { kind = 'get'; computed = this.match('['); key = this.parseObjectPropertyKey(); this.context.allowYield = false; value = this.parseGetterMethod(); } else if (token.value === 'set' && lookaheadPropertyKey) { kind = 'set'; computed = this.match('['); key = this.parseObjectPropertyKey(); value = this.parseSetterMethod(); } } else if (token.type === 7 /* Punctuator */ && token.value === '*' && lookaheadPropertyKey) { kind = 'init'; computed = this.match('['); key = this.parseObjectPropertyKey(); value = this.parseGeneratorMethod(); method = true; } if (!kind && key && this.match('(')) { kind = 'init'; value = isAsync ? this.parsePropertyMethodAsyncFunction() : this.parsePropertyMethodFunction(); method = true; } if (!kind) { this.throwUnexpectedToken(this.lookahead); } if (kind === 'init') { kind = 'method'; } if (!computed) { if (isStatic && this.isPropertyKey(key, 'prototype')) { this.throwUnexpectedToken(token, messages_1.Messages.StaticPrototype); } if (!isStatic && this.isPropertyKey(key, 'constructor')) { if (kind !== 'method' || !method || (value && value.generator)) { this.throwUnexpectedToken(token, messages_1.Messages.ConstructorSpecialMethod); } if (hasConstructor.value) { this.throwUnexpectedToken(token, messages_1.Messages.DuplicateConstructor); } else { hasConstructor.value = true; } kind = 'constructor'; } } return this.finalize(node, new Node.MethodDefinition(key, computed, value, kind, isStatic)); }; Parser.prototype.parseClassElementList = function () { var body = []; var hasConstructor = { value: false }; this.expect('{'); while (!this.match('}')) { if (this.match(';')) { this.nextToken(); } else { body.push(this.parseClassElement(hasConstructor)); } } this.expect('}'); return body; }; Parser.prototype.parseClassBody = function () { var node = this.createNode(); var elementList = this.parseClassElementList(); return this.finalize(node, new Node.ClassBody(elementList)); }; Parser.prototype.parseClassDeclaration = function (identifierIsOptional) { var node = this.createNode(); var previousStrict = this.context.strict; this.context.strict = true; this.expectKeyword('class'); var id = (identifierIsOptional && (this.lookahead.type !== 3 /* Identifier */)) ? null : this.parseVariableIdentifier(); var superClass = null; if (this.matchKeyword('extends')) { this.nextToken(); superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall); } var classBody = this.parseClassBody(); this.context.strict = previousStrict; return this.finalize(node, new Node.ClassDeclaration(id, superClass, classBody)); }; Parser.prototype.parseClassExpression = function () { var node = this.createNode(); var previousStrict = this.context.strict; this.context.strict = true; this.expectKeyword('class'); var id = (this.lookahead.type === 3 /* Identifier */) ? this.parseVariableIdentifier() : null; var superClass = null; if (this.matchKeyword('extends')) { this.nextToken(); superClass = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall); } var classBody = this.parseClassBody(); this.context.strict = previousStrict; return this.finalize(node, new Node.ClassExpression(id, superClass, classBody)); }; // https://tc39.github.io/ecma262/#sec-scripts // https://tc39.github.io/ecma262/#sec-modules Parser.prototype.parseModule = function () { this.context.strict = true; this.context.isModule = true; this.scanner.isModule = true; var node = this.createNode(); var body = this.parseDirectivePrologues(); while (this.lookahead.type !== 2 /* EOF */) { body.push(this.parseStatementListItem()); } return this.finalize(node, new Node.Module(body)); }; Parser.prototype.parseScript = function () { var node = this.createNode(); var body = this.parseDirectivePrologues(); while (this.lookahead.type !== 2 /* EOF */) { body.push(this.parseStatementListItem()); } return this.finalize(node, new Node.Script(body)); }; // https://tc39.github.io/ecma262/#sec-imports Parser.prototype.parseModuleSpecifier = function () { var node = this.createNode(); if (this.lookahead.type !== 8 /* StringLiteral */) { this.throwError(messages_1.Messages.InvalidModuleSpecifier); } var token = this.nextToken(); var raw = this.getTokenRaw(token); return this.finalize(node, new Node.Literal(token.value, raw)); }; // import {} ...; Parser.prototype.parseImportSpecifier = function () { var node = this.createNode(); var imported; var local; if (this.lookahead.type === 3 /* Identifier */) { imported = this.parseVariableIdentifier(); local = imported; if (this.matchContextualKeyword('as')) { this.nextToken(); local = this.parseVariableIdentifier(); } } else { imported = this.parseIdentifierName(); local = imported; if (this.matchContextualKeyword('as')) { this.nextToken(); local = this.parseVariableIdentifier(); } else { this.throwUnexpectedToken(this.nextToken()); } } return this.finalize(node, new Node.ImportSpecifier(local, imported)); }; // {foo, bar as bas} Parser.prototype.parseNamedImports = function () { this.expect('{'); var specifiers = []; while (!this.match('}')) { specifiers.push(this.parseImportSpecifier()); if (!this.match('}')) { this.expect(','); } } this.expect('}'); return specifiers; }; // import ...; Parser.prototype.parseImportDefaultSpecifier = function () { var node = this.createNode(); var local = this.parseIdentifierName(); return this.finalize(node, new Node.ImportDefaultSpecifier(local)); }; // import <* as foo> ...; Parser.prototype.parseImportNamespaceSpecifier = function () { var node = this.createNode(); this.expect('*'); if (!this.matchContextualKeyword('as')) { this.throwError(messages_1.Messages.NoAsAfterImportNamespace); } this.nextToken(); var local = this.parseIdentifierName(); return this.finalize(node, new Node.ImportNamespaceSpecifier(local)); }; Parser.prototype.parseImportDeclaration = function () { if (this.context.inFunctionBody) { this.throwError(messages_1.Messages.IllegalImportDeclaration); } var node = this.createNode(); this.expectKeyword('import'); var src; var specifiers = []; if (this.lookahead.type === 8 /* StringLiteral */) { // import 'foo'; src = this.parseModuleSpecifier(); } else { if (this.match('{')) { // import {bar} specifiers = specifiers.concat(this.parseNamedImports()); } else if (this.match('*')) { // import * as foo specifiers.push(this.parseImportNamespaceSpecifier()); } else if (this.isIdentifierName(this.lookahead) && !this.matchKeyword('default')) { // import foo specifiers.push(this.parseImportDefaultSpecifier()); if (this.match(',')) { this.nextToken(); if (this.match('*')) { // import foo, * as foo specifiers.push(this.parseImportNamespaceSpecifier()); } else if (this.match('{')) { // import foo, {bar} specifiers = specifiers.concat(this.parseNamedImports()); } else { this.throwUnexpectedToken(this.lookahead); } } } else { this.throwUnexpectedToken(this.nextToken()); } if (!this.matchContextualKeyword('from')) { var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; this.throwError(message, this.lookahead.value); } this.nextToken(); src = this.parseModuleSpecifier(); } this.consumeSemicolon(); return this.finalize(node, new Node.ImportDeclaration(specifiers, src)); }; // https://tc39.github.io/ecma262/#sec-exports Parser.prototype.parseExportSpecifier = function () { var node = this.createNode(); var local = this.parseIdentifierName(); var exported = local; if (this.matchContextualKeyword('as')) { this.nextToken(); exported = this.parseIdentifierName(); } return this.finalize(node, new Node.ExportSpecifier(local, exported)); }; Parser.prototype.parseExportDeclaration = function () { if (this.context.inFunctionBody) { this.throwError(messages_1.Messages.IllegalExportDeclaration); } var node = this.createNode(); this.expectKeyword('export'); var exportDeclaration; if (this.matchKeyword('default')) { // export default ... this.nextToken(); if (this.matchKeyword('function')) { // export default function foo () {} // export default function () {} var declaration = this.parseFunctionDeclaration(true); exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); } else if (this.matchKeyword('class')) { // export default class foo {} var declaration = this.parseClassDeclaration(true); exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); } else if (this.matchContextualKeyword('async')) { // export default async function f () {} // export default async function () {} // export default async x => x var declaration = this.matchAsyncFunction() ? this.parseFunctionDeclaration(true) : this.parseAssignmentExpression(); exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); } else { if (this.matchContextualKeyword('from')) { this.throwError(messages_1.Messages.UnexpectedToken, this.lookahead.value); } // export default {}; // export default []; // export default (1 + 2); var declaration = this.match('{') ? this.parseObjectInitializer() : this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression(); this.consumeSemicolon(); exportDeclaration = this.finalize(node, new Node.ExportDefaultDeclaration(declaration)); } } else if (this.match('*')) { // export * from 'foo'; this.nextToken(); if (!this.matchContextualKeyword('from')) { var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; this.throwError(message, this.lookahead.value); } this.nextToken(); var src = this.parseModuleSpecifier(); this.consumeSemicolon(); exportDeclaration = this.finalize(node, new Node.ExportAllDeclaration(src)); } else if (this.lookahead.type === 4 /* Keyword */) { // export var f = 1; var declaration = void 0; switch (this.lookahead.value) { case 'let': case 'const': declaration = this.parseLexicalDeclaration({ inFor: false }); break; case 'var': case 'class': case 'function': declaration = this.parseStatementListItem(); break; default: this.throwUnexpectedToken(this.lookahead); } exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null)); } else if (this.matchAsyncFunction()) { var declaration = this.parseFunctionDeclaration(); exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(declaration, [], null)); } else { var specifiers = []; var source = null; var isExportFromIdentifier = false; this.expect('{'); while (!this.match('}')) { isExportFromIdentifier = isExportFromIdentifier || this.matchKeyword('default'); specifiers.push(this.parseExportSpecifier()); if (!this.match('}')) { this.expect(','); } } this.expect('}'); if (this.matchContextualKeyword('from')) { // export {default} from 'foo'; // export {foo} from 'foo'; this.nextToken(); source = this.parseModuleSpecifier(); this.consumeSemicolon(); } else if (isExportFromIdentifier) { // export {default}; // missing fromClause var message = this.lookahead.value ? messages_1.Messages.UnexpectedToken : messages_1.Messages.MissingFromClause; this.throwError(message, this.lookahead.value); } else { // export {foo}; this.consumeSemicolon(); } exportDeclaration = this.finalize(node, new Node.ExportNamedDeclaration(null, specifiers, source)); } return exportDeclaration; }; return Parser; }()); exports.Parser = Parser; /***/ }, /* 9 */ /***/ function(module, exports) { "use strict"; // Ensure the condition is true, otherwise throw an error. // This is only to have a better contract semantic, i.e. another safety net // to catch a logic error. The condition shall be fulfilled in normal case. // Do NOT use this to enforce a certain condition on any user input. Object.defineProperty(exports, "__esModule", { value: true }); function assert(condition, message) { /* istanbul ignore if */ if (!condition) { throw new Error('ASSERT: ' + message); } } exports.assert = assert; /***/ }, /* 10 */ /***/ function(module, exports) { "use strict"; /* tslint:disable:max-classes-per-file */ Object.defineProperty(exports, "__esModule", { value: true }); var ErrorHandler = (function () { function ErrorHandler() { this.errors = []; this.tolerant = false; } ErrorHandler.prototype.recordError = function (error) { this.errors.push(error); }; ErrorHandler.prototype.tolerate = function (error) { if (this.tolerant) { this.recordError(error); } else { throw error; } }; ErrorHandler.prototype.constructError = function (msg, column) { var error = new Error(msg); try { throw error; } catch (base) { /* istanbul ignore else */ if (Object.create && Object.defineProperty) { error = Object.create(base); Object.defineProperty(error, 'column', { value: column }); } } /* istanbul ignore next */ return error; }; ErrorHandler.prototype.createError = function (index, line, col, description) { var msg = 'Line ' + line + ': ' + description; var error = this.constructError(msg, col); error.index = index; error.lineNumber = line; error.description = description; return error; }; ErrorHandler.prototype.throwError = function (index, line, col, description) { throw this.createError(index, line, col, description); }; ErrorHandler.prototype.tolerateError = function (index, line, col, description) { var error = this.createError(index, line, col, description); if (this.tolerant) { this.recordError(error); } else { throw error; } }; return ErrorHandler; }()); exports.ErrorHandler = ErrorHandler; /***/ }, /* 11 */ /***/ function(module, exports) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); // Error messages should be identical to V8. exports.Messages = { BadGetterArity: 'Getter must not have any formal parameters', BadSetterArity: 'Setter must have exactly one formal parameter', BadSetterRestParameter: 'Setter function argument must not be a rest parameter', ConstructorIsAsync: 'Class constructor may not be an async method', ConstructorSpecialMethod: 'Class constructor may not be an accessor', DeclarationMissingInitializer: 'Missing initializer in %0 declaration', DefaultRestParameter: 'Unexpected token =', DuplicateBinding: 'Duplicate binding %0', DuplicateConstructor: 'A class may only have one constructor', DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals', ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer', GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts', IllegalBreak: 'Illegal break statement', IllegalContinue: 'Illegal continue statement', IllegalExportDeclaration: 'Unexpected token', IllegalImportDeclaration: 'Unexpected token', IllegalLanguageModeDirective: 'Illegal \'use strict\' directive in function with non-simple parameter list', IllegalReturn: 'Illegal return statement', InvalidEscapedReservedWord: 'Keyword must not contain escaped characters', InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence', InvalidLHSInAssignment: 'Invalid left-hand side in assignment', InvalidLHSInForIn: 'Invalid left-hand side in for-in', InvalidLHSInForLoop: 'Invalid left-hand side in for-loop', InvalidModuleSpecifier: 'Unexpected token', InvalidRegExp: 'Invalid regular expression', LetInLexicalBinding: 'let is disallowed as a lexically bound name', MissingFromClause: 'Unexpected token', MultipleDefaultsInSwitch: 'More than one default clause in switch statement', NewlineAfterThrow: 'Illegal newline after throw', NoAsAfterImportNamespace: 'Unexpected token', NoCatchOrFinally: 'Missing catch or finally after try', ParameterAfterRestParameter: 'Rest parameter must be last formal parameter', Redeclaration: '%0 \'%1\' has already been declared', StaticPrototype: 'Classes may not have static property named prototype', StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode', StrictDelete: 'Delete of an unqualified identifier in strict mode.', StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block', StrictFunctionName: 'Function name may not be eval or arguments in strict mode', StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode', StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode', StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode', StrictModeWith: 'Strict mode code may not include a with statement', StrictOctalLiteral: 'Octal literals are not allowed in strict mode.', StrictParamDupe: 'Strict mode function may not have duplicate parameter names', StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode', StrictReservedWord: 'Use of future reserved word in strict mode', StrictVarName: 'Variable name may not be eval or arguments in strict mode', TemplateOctalLiteral: 'Octal literals are not allowed in template strings.', UnexpectedEOS: 'Unexpected end of input', UnexpectedIdentifier: 'Unexpected identifier', UnexpectedNumber: 'Unexpected number', UnexpectedReserved: 'Unexpected reserved word', UnexpectedString: 'Unexpected string', UnexpectedTemplate: 'Unexpected quasi %0', UnexpectedToken: 'Unexpected token %0', UnexpectedTokenIllegal: 'Unexpected token ILLEGAL', UnknownLabel: 'Undefined label \'%0\'', UnterminatedRegExp: 'Invalid regular expression: missing /' }; /***/ }, /* 12 */ /***/ function(module, exports, __nested_webpack_require_226599_226618__) { "use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var assert_1 = __nested_webpack_require_226599_226618__(9); var character_1 = __nested_webpack_require_226599_226618__(4); var messages_1 = __nested_webpack_require_226599_226618__(11); function hexValue(ch) { return '0123456789abcdef'.indexOf(ch.toLowerCase()); } function octalValue(ch) { return '01234567'.indexOf(ch); } var Scanner = (function () { function Scanner(code, handler) { this.source = code; this.errorHandler = handler; this.trackComment = false; this.isModule = false; this.length = code.length; this.index = 0; this.lineNumber = (code.length > 0) ? 1 : 0; this.lineStart = 0; this.curlyStack = []; } Scanner.prototype.saveState = function () { return { index: this.index, lineNumber: this.lineNumber, lineStart: this.lineStart }; }; Scanner.prototype.restoreState = function (state) { this.index = state.index; this.lineNumber = state.lineNumber; this.lineStart = state.lineStart; }; Scanner.prototype.eof = function () { return this.index >= this.length; }; Scanner.prototype.throwUnexpectedToken = function (message) { if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; } return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, message); }; Scanner.prototype.tolerateUnexpectedToken = function (message) { if (message === void 0) { message = messages_1.Messages.UnexpectedTokenIllegal; } this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, message); }; // https://tc39.github.io/ecma262/#sec-comments Scanner.prototype.skipSingleLineComment = function (offset) { var comments = []; var start, loc; if (this.trackComment) { comments = []; start = this.index - offset; loc = { start: { line: this.lineNumber, column: this.index - this.lineStart - offset }, end: {} }; } while (!this.eof()) { var ch = this.source.charCodeAt(this.index); ++this.index; if (character_1.Character.isLineTerminator(ch)) { if (this.trackComment) { loc.end = { line: this.lineNumber, column: this.index - this.lineStart - 1 }; var entry = { multiLine: false, slice: [start + offset, this.index - 1], range: [start, this.index - 1], loc: loc }; comments.push(entry); } if (ch === 13 && this.source.charCodeAt(this.index) === 10) { ++this.index; } ++this.lineNumber; this.lineStart = this.index; return comments; } } if (this.trackComment) { loc.end = { line: this.lineNumber, column: this.index - this.lineStart }; var entry = { multiLine: false, slice: [start + offset, this.index], range: [start, this.index], loc: loc }; comments.push(entry); } return comments; }; Scanner.prototype.skipMultiLineComment = function () { var comments = []; var start, loc; if (this.trackComment) { comments = []; start = this.index - 2; loc = { start: { line: this.lineNumber, column: this.index - this.lineStart - 2 }, end: {} }; } while (!this.eof()) { var ch = this.source.charCodeAt(this.index); if (character_1.Character.isLineTerminator(ch)) { if (ch === 0x0D && this.source.charCodeAt(this.index + 1) === 0x0A) { ++this.index; } ++this.lineNumber; ++this.index; this.lineStart = this.index; } else if (ch === 0x2A) { // Block comment ends with '*/'. if (this.source.charCodeAt(this.index + 1) === 0x2F) { this.index += 2; if (this.trackComment) { loc.end = { line: this.lineNumber, column: this.index - this.lineStart }; var entry = { multiLine: true, slice: [start + 2, this.index - 2], range: [start, this.index], loc: loc }; comments.push(entry); } return comments; } ++this.index; } else { ++this.index; } } // Ran off the end of the file - the whole thing is a comment if (this.trackComment) { loc.end = { line: this.lineNumber, column: this.index - this.lineStart }; var entry = { multiLine: true, slice: [start + 2, this.index], range: [start, this.index], loc: loc }; comments.push(entry); } this.tolerateUnexpectedToken(); return comments; }; Scanner.prototype.scanComments = function () { var comments; if (this.trackComment) { comments = []; } var start = (this.index === 0); while (!this.eof()) { var ch = this.source.charCodeAt(this.index); if (character_1.Character.isWhiteSpace(ch)) { ++this.index; } else if (character_1.Character.isLineTerminator(ch)) { ++this.index; if (ch === 0x0D && this.source.charCodeAt(this.index) === 0x0A) { ++this.index; } ++this.lineNumber; this.lineStart = this.index; start = true; } else if (ch === 0x2F) { ch = this.source.charCodeAt(this.index + 1); if (ch === 0x2F) { this.index += 2; var comment = this.skipSingleLineComment(2); if (this.trackComment) { comments = comments.concat(comment); } start = true; } else if (ch === 0x2A) { this.index += 2; var comment = this.skipMultiLineComment(); if (this.trackComment) { comments = comments.concat(comment); } } else { break; } } else if (start && ch === 0x2D) { // U+003E is '>' if ((this.source.charCodeAt(this.index + 1) === 0x2D) && (this.source.charCodeAt(this.index + 2) === 0x3E)) { // '-->' is a single-line comment this.index += 3; var comment = this.skipSingleLineComment(3); if (this.trackComment) { comments = comments.concat(comment); } } else { break; } } else if (ch === 0x3C && !this.isModule) { if (this.source.slice(this.index + 1, this.index + 4) === '!--') { this.index += 4; // `