Index: frontend/node_modules/jsesc/jsesc.js
===================================================================
--- frontend/node_modules/jsesc/jsesc.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/jsesc/jsesc.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,337 @@
+'use strict';
+
+const object = {};
+const hasOwnProperty = object.hasOwnProperty;
+const forOwn = (object, callback) => {
+	for (const key in object) {
+		if (hasOwnProperty.call(object, key)) {
+			callback(key, object[key]);
+		}
+	}
+};
+
+const extend = (destination, source) => {
+	if (!source) {
+		return destination;
+	}
+	forOwn(source, (key, value) => {
+		destination[key] = value;
+	});
+	return destination;
+};
+
+const forEach = (array, callback) => {
+	const length = array.length;
+	let index = -1;
+	while (++index < length) {
+		callback(array[index]);
+	}
+};
+
+const fourHexEscape = (hex) => {
+	return '\\u' + ('0000' + hex).slice(-4);
+}
+
+const hexadecimal = (code, lowercase) => {
+	let hexadecimal = code.toString(16);
+	if (lowercase) return hexadecimal;
+	return hexadecimal.toUpperCase();
+};
+
+const toString = object.toString;
+const isArray = Array.isArray;
+const isBuffer = (value) => {
+	return typeof Buffer === 'function' && Buffer.isBuffer(value);
+};
+const isObject = (value) => {
+	// This is a very simple check, but it’s good enough for what we need.
+	return toString.call(value) == '[object Object]';
+};
+const isString = (value) => {
+	return typeof value == 'string' ||
+		toString.call(value) == '[object String]';
+};
+const isNumber = (value) => {
+	return typeof value == 'number' ||
+		toString.call(value) == '[object Number]';
+};
+const isBigInt = (value) => {
+  return typeof value == 'bigint';
+};
+const isFunction = (value) => {
+	return typeof value == 'function';
+};
+const isMap = (value) => {
+	return toString.call(value) == '[object Map]';
+};
+const isSet = (value) => {
+	return toString.call(value) == '[object Set]';
+};
+
+/*--------------------------------------------------------------------------*/
+
+// https://mathiasbynens.be/notes/javascript-escapes#single
+const singleEscapes = {
+	'\\': '\\\\',
+	'\b': '\\b',
+	'\f': '\\f',
+	'\n': '\\n',
+	'\r': '\\r',
+	'\t': '\\t'
+	// `\v` is omitted intentionally, because in IE < 9, '\v' == 'v'.
+	// '\v': '\\x0B'
+};
+const regexSingleEscape = /[\\\b\f\n\r\t]/;
+
+const regexDigit = /[0-9]/;
+const regexWhitespace = /[\xA0\u1680\u2000-\u200A\u2028\u2029\u202F\u205F\u3000]/;
+
+const escapeEverythingRegex = /([\uD800-\uDBFF][\uDC00-\uDFFF])|([\uD800-\uDFFF])|(['"`])|[^]/g;
+const escapeNonAsciiRegex = /([\uD800-\uDBFF][\uDC00-\uDFFF])|([\uD800-\uDFFF])|(['"`])|[^ !#-&\(-\[\]-_a-~]/g;
+
+const jsesc = (argument, options) => {
+	const increaseIndentation = () => {
+		oldIndent = indent;
+		++options.indentLevel;
+		indent = options.indent.repeat(options.indentLevel)
+	};
+	// Handle options
+	const defaults = {
+		'escapeEverything': false,
+		'minimal': false,
+		'isScriptContext': false,
+		'quotes': 'single',
+		'wrap': false,
+		'es6': false,
+		'json': false,
+		'compact': true,
+		'lowercaseHex': false,
+		'numbers': 'decimal',
+		'indent': '\t',
+		'indentLevel': 0,
+		'__inline1__': false,
+		'__inline2__': false
+	};
+	const json = options && options.json;
+	if (json) {
+		defaults.quotes = 'double';
+		defaults.wrap = true;
+	}
+	options = extend(defaults, options);
+	if (
+		options.quotes != 'single' &&
+		options.quotes != 'double' &&
+		options.quotes != 'backtick'
+	) {
+		options.quotes = 'single';
+	}
+	const quote = options.quotes == 'double' ?
+		'"' :
+		(options.quotes == 'backtick' ?
+			'`' :
+			'\''
+		);
+	const compact = options.compact;
+	const lowercaseHex = options.lowercaseHex;
+	let indent = options.indent.repeat(options.indentLevel);
+	let oldIndent = '';
+	const inline1 = options.__inline1__;
+	const inline2 = options.__inline2__;
+	const newLine = compact ? '' : '\n';
+	let result;
+	let isEmpty = true;
+	const useBinNumbers = options.numbers == 'binary';
+	const useOctNumbers = options.numbers == 'octal';
+	const useDecNumbers = options.numbers == 'decimal';
+	const useHexNumbers = options.numbers == 'hexadecimal';
+
+	if (json && argument && isFunction(argument.toJSON)) {
+		argument = argument.toJSON();
+	}
+
+	if (!isString(argument)) {
+		if (isMap(argument)) {
+			if (argument.size == 0) {
+				return 'new Map()';
+			}
+			if (!compact) {
+				options.__inline1__ = true;
+				options.__inline2__ = false;
+			}
+			return 'new Map(' + jsesc(Array.from(argument), options) + ')';
+		}
+		if (isSet(argument)) {
+			if (argument.size == 0) {
+				return 'new Set()';
+			}
+			return 'new Set(' + jsesc(Array.from(argument), options) + ')';
+		}
+		if (isBuffer(argument)) {
+			if (argument.length == 0) {
+				return 'Buffer.from([])';
+			}
+			return 'Buffer.from(' + jsesc(Array.from(argument), options) + ')';
+		}
+		if (isArray(argument)) {
+			result = [];
+			options.wrap = true;
+			if (inline1) {
+				options.__inline1__ = false;
+				options.__inline2__ = true;
+			}
+			if (!inline2) {
+				increaseIndentation();
+			}
+			forEach(argument, (value) => {
+				isEmpty = false;
+				if (inline2) {
+					options.__inline2__ = false;
+				}
+				result.push(
+					(compact || inline2 ? '' : indent) +
+					jsesc(value, options)
+				);
+			});
+			if (isEmpty) {
+				return '[]';
+			}
+			if (inline2) {
+				return '[' + result.join(', ') + ']';
+			}
+			return '[' + newLine + result.join(',' + newLine) + newLine +
+				(compact ? '' : oldIndent) + ']';
+		} else if (isNumber(argument) || isBigInt(argument)) {
+			if (json) {
+				// Some number values (e.g. `Infinity`) cannot be represented in JSON.
+				// `BigInt` values less than `-Number.MAX_VALUE` or greater than
+        // `Number.MAX_VALUE` cannot be represented in JSON so they will become
+        // `-Infinity` or `Infinity`, respectively, and then become `null` when
+        // stringified.
+				return JSON.stringify(Number(argument));
+			}
+
+      let result;
+			if (useDecNumbers) {
+				result = String(argument);
+			} else if (useHexNumbers) {
+				let hexadecimal = argument.toString(16);
+				if (!lowercaseHex) {
+					hexadecimal = hexadecimal.toUpperCase();
+				}
+				result = '0x' + hexadecimal;
+			} else if (useBinNumbers) {
+				result = '0b' + argument.toString(2);
+			} else if (useOctNumbers) {
+				result = '0o' + argument.toString(8);
+			}
+
+      if (isBigInt(argument)) {
+        return result + 'n';
+      }
+      return result;
+		} else if (isBigInt(argument)) {
+			if (json) {
+				// `BigInt` values less than `-Number.MAX_VALUE` or greater than
+        // `Number.MAX_VALUE` will become `-Infinity` or `Infinity`,
+        // respectively, and cannot be represented in JSON.
+				return JSON.stringify(Number(argument));
+			}
+      return argument + 'n';
+    } else if (!isObject(argument)) {
+			if (json) {
+				// For some values (e.g. `undefined`, `function` objects),
+				// `JSON.stringify(value)` returns `undefined` (which isn’t valid
+				// JSON) instead of `'null'`.
+				return JSON.stringify(argument) || 'null';
+			}
+			return String(argument);
+		} else { // it’s an object
+			result = [];
+			options.wrap = true;
+			increaseIndentation();
+			forOwn(argument, (key, value) => {
+				isEmpty = false;
+				result.push(
+					(compact ? '' : indent) +
+					jsesc(key, options) + ':' +
+					(compact ? '' : ' ') +
+					jsesc(value, options)
+				);
+			});
+			if (isEmpty) {
+				return '{}';
+			}
+			return '{' + newLine + result.join(',' + newLine) + newLine +
+				(compact ? '' : oldIndent) + '}';
+		}
+	}
+
+	const regex = options.escapeEverything ? escapeEverythingRegex : escapeNonAsciiRegex;
+	result = argument.replace(regex, (char, pair, lone, quoteChar, index, string) => {
+		if (pair) {
+			if (options.minimal) return pair;
+			const first = pair.charCodeAt(0);
+			const second = pair.charCodeAt(1);
+			if (options.es6) {
+				// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+				const codePoint = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
+				const hex = hexadecimal(codePoint, lowercaseHex);
+				return '\\u{' + hex + '}';
+			}
+			return fourHexEscape(hexadecimal(first, lowercaseHex)) + fourHexEscape(hexadecimal(second, lowercaseHex));
+		}
+
+		if (lone) {
+			return fourHexEscape(hexadecimal(lone.charCodeAt(0), lowercaseHex));
+		}
+
+		if (
+			char == '\0' &&
+			!json &&
+			!regexDigit.test(string.charAt(index + 1))
+		) {
+			return '\\0';
+		}
+
+		if (quoteChar) {
+			if (quoteChar == quote || options.escapeEverything) {
+				return '\\' + quoteChar;
+			}
+			return quoteChar;
+		}
+
+		if (regexSingleEscape.test(char)) {
+			// no need for a `hasOwnProperty` check here
+			return singleEscapes[char];
+		}
+
+		if (options.minimal && !regexWhitespace.test(char)) {
+			return char;
+		}
+
+		const hex = hexadecimal(char.charCodeAt(0), lowercaseHex);
+		if (json || hex.length > 2) {
+			return fourHexEscape(hex);
+		}
+
+		return '\\x' + ('00' + hex).slice(-2);
+	});
+
+	if (quote == '`') {
+		result = result.replace(/\$\{/g, '\\${');
+	}
+	if (options.isScriptContext) {
+		// https://mathiasbynens.be/notes/etago
+		result = result
+			.replace(/<\/(script|style)/gi, '<\\/$1')
+			.replace(/<!--/g, json ? '\\u003C!--' : '\\x3C!--');
+	}
+	if (options.wrap) {
+		result = quote + result + quote;
+	}
+	return result;
+};
+
+jsesc.version = '3.0.2';
+
+module.exports = jsesc;