# All files / node_modules/utf8 utf8.js

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     /*! https://mths.be/utf8js v3.0.0 by @mathias */
    ;(function(root) {

    	var stringFromCharCode = String.fromCharCode;

    	// Taken from https://mths.be/punycode
    	function ucs2decode(string) {
    		var output = [];
    		var counter = 0;
    		var length = string.length;
    		var value;
    		var extra;
    		while (counter < length) {
    			value = string.charCodeAt(counter++);
    			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
    				// high surrogate, and there is a next character
    				extra = string.charCodeAt(counter++);
    				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
    					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
    				} else {
    					// unmatched surrogate; only append this code unit, in case the next
    					// code unit is the high surrogate of a surrogate pair
    					output.push(value);
    					counter--;
    				}
    			} else {
    				output.push(value);
    			}
    		}
    		return output;
    	}

    	// Taken from https://mths.be/punycode
    	function ucs2encode(array) {
    		var length = array.length;
    		var index = -1;
    		var value;
    		var output = '';
    		while (++index < length) {
    			value = array[index];
    I			if (value > 0xFFFF) {
    				value -= 0x10000;
    				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
    				value = 0xDC00 | value & 0x3FF;
    			}
    			output += stringFromCharCode(value);
    		}
    		return output;
    	}

    	function checkScalarValue(codePoint) {
    I		if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
    			throw Error(
    				'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
    				' is not a scalar value'
    			);
    		}
    	}
    	/*--------------------------------------------------------------------------*/

    	function createByte(codePoint, shift) {
    		return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
    	}

    	function encodeCodePoint(codePoint) {
    I		if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
    			return stringFromCharCode(codePoint);
    		}
    		var symbol = '';
    		if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
    			symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
    		}
    		else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
    			checkScalarValue(codePoint);
    			symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
    			symbol += createByte(codePoint, 6);
    		}
    I		else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
    			symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
    			symbol += createByte(codePoint, 12);
    			symbol += createByte(codePoint, 6);
    		}
    		symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
    		return symbol;
    	}

    	function utf8encode(string) {
    		var codePoints = ucs2decode(string);
    		var length = codePoints.length;
    		var index = -1;
    		var codePoint;
    		var byteString = '';
    		while (++index < length) {
    			codePoint = codePoints[index];
    			byteString += encodeCodePoint(codePoint);
    		}
    		return byteString;
    	}

    	/*--------------------------------------------------------------------------*/

    	function readContinuationByte() {
    I		if (byteIndex >= byteCount) {
    			throw Error('Invalid byte index');
    		}

    		var continuationByte = byteArray[byteIndex] & 0xFF;
    		byteIndex++;

    I		if ((continuationByte & 0xC0) == 0x80) {
    			return continuationByte & 0x3F;
    		}

    		// If we end up here, it’s not a continuation byte
    		throw Error('Invalid continuation byte');
    	}

    	function decodeSymbol() {
    		var byte1;
    		var byte2;
    		var byte3;
    		var byte4;
    		var codePoint;

    I		if (byteIndex > byteCount) {
    			throw Error('Invalid byte index');
    		}

    I		if (byteIndex == byteCount) {
    			return false;
    		}

    		// Read first byte
    		byte1 = byteArray[byteIndex] & 0xFF;
    		byteIndex++;

    		// 1-byte sequence (no continuation bytes)
    I		if ((byte1 & 0x80) == 0) {
    			return byte1;
    		}

    		// 2-byte sequence
    I		if ((byte1 & 0xE0) == 0xC0) {
    			byte2 = readContinuationByte();
    			codePoint = ((byte1 & 0x1F) << 6) | byte2;
    			if (codePoint >= 0x80) {
    				return codePoint;
    			} else {
    				throw Error('Invalid continuation byte');
    			}
    		}

    		// 3-byte sequence (may include unpaired surrogates)
    I		if ((byte1 & 0xF0) == 0xE0) {
    			byte2 = readContinuationByte();
    			byte3 = readContinuationByte();
    			codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
    			if (codePoint >= 0x0800) {
    				checkScalarValue(codePoint);
    				return codePoint;
    			} else {
    				throw Error('Invalid continuation byte');
    			}
    		}

    		// 4-byte sequence
    I		if ((byte1 & 0xF8) == 0xF0) {
    			byte2 = readContinuationByte();
    			byte3 = readContinuationByte();
    			byte4 = readContinuationByte();
    			codePoint = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0C) |
    				(byte3 << 0x06) | byte4;
    I			if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
    				return codePoint;
    			}
    		}

    		throw Error('Invalid UTF-8 detected');
    	}

    	var byteArray;
    	var byteCount;
    	var byteIndex;
    	function utf8decode(byteString) {
    		byteArray = ucs2decode(byteString);
    		byteCount = byteArray.length;
    		byteIndex = 0;
    		var codePoints = [];
    		var tmp;
    		while ((tmp = decodeSymbol()) !== false) {
    			codePoints.push(tmp);
    		}
    		return ucs2encode(codePoints);
    	}

    	/*--------------------------------------------------------------------------*/

    	root.version = '3.0.0';
    	root.encode = utf8encode;
    	root.decode = utf8decode;

    }(typeof exports === 'undefined' ? this.utf8 = {} : exports));