[d565449] | 1 | 'use strict';
|
---|
| 2 |
|
---|
| 3 | const object = {};
|
---|
| 4 | const hasOwnProperty = object.hasOwnProperty;
|
---|
| 5 | const forOwn = (object, callback) => {
|
---|
| 6 | for (const key in object) {
|
---|
| 7 | if (hasOwnProperty.call(object, key)) {
|
---|
| 8 | callback(key, object[key]);
|
---|
| 9 | }
|
---|
| 10 | }
|
---|
| 11 | };
|
---|
| 12 |
|
---|
| 13 | const extend = (destination, source) => {
|
---|
| 14 | if (!source) {
|
---|
| 15 | return destination;
|
---|
| 16 | }
|
---|
| 17 | forOwn(source, (key, value) => {
|
---|
| 18 | destination[key] = value;
|
---|
| 19 | });
|
---|
| 20 | return destination;
|
---|
| 21 | };
|
---|
| 22 |
|
---|
| 23 | const forEach = (array, callback) => {
|
---|
| 24 | const length = array.length;
|
---|
| 25 | let index = -1;
|
---|
| 26 | while (++index < length) {
|
---|
| 27 | callback(array[index]);
|
---|
| 28 | }
|
---|
| 29 | };
|
---|
| 30 |
|
---|
| 31 | const toString = object.toString;
|
---|
| 32 | const isArray = Array.isArray;
|
---|
| 33 | const isBuffer = Buffer.isBuffer;
|
---|
| 34 | const isObject = (value) => {
|
---|
| 35 | // This is a very simple check, but it’s good enough for what we need.
|
---|
| 36 | return toString.call(value) == '[object Object]';
|
---|
| 37 | };
|
---|
| 38 | const isString = (value) => {
|
---|
| 39 | return typeof value == 'string' ||
|
---|
| 40 | toString.call(value) == '[object String]';
|
---|
| 41 | };
|
---|
| 42 | const isNumber = (value) => {
|
---|
| 43 | return typeof value == 'number' ||
|
---|
| 44 | toString.call(value) == '[object Number]';
|
---|
| 45 | };
|
---|
| 46 | const isFunction = (value) => {
|
---|
| 47 | return typeof value == 'function';
|
---|
| 48 | };
|
---|
| 49 | const isMap = (value) => {
|
---|
| 50 | return toString.call(value) == '[object Map]';
|
---|
| 51 | };
|
---|
| 52 | const isSet = (value) => {
|
---|
| 53 | return toString.call(value) == '[object Set]';
|
---|
| 54 | };
|
---|
| 55 |
|
---|
| 56 | /*--------------------------------------------------------------------------*/
|
---|
| 57 |
|
---|
| 58 | // https://mathiasbynens.be/notes/javascript-escapes#single
|
---|
| 59 | const singleEscapes = {
|
---|
| 60 | '"': '\\"',
|
---|
| 61 | '\'': '\\\'',
|
---|
| 62 | '\\': '\\\\',
|
---|
| 63 | '\b': '\\b',
|
---|
| 64 | '\f': '\\f',
|
---|
| 65 | '\n': '\\n',
|
---|
| 66 | '\r': '\\r',
|
---|
| 67 | '\t': '\\t'
|
---|
| 68 | // `\v` is omitted intentionally, because in IE < 9, '\v' == 'v'.
|
---|
| 69 | // '\v': '\\x0B'
|
---|
| 70 | };
|
---|
| 71 | const regexSingleEscape = /["'\\\b\f\n\r\t]/;
|
---|
| 72 |
|
---|
| 73 | const regexDigit = /[0-9]/;
|
---|
| 74 | const regexWhitelist = /[ !#-&\(-\[\]-_a-~]/;
|
---|
| 75 |
|
---|
| 76 | const jsesc = (argument, options) => {
|
---|
| 77 | const increaseIndentation = () => {
|
---|
| 78 | oldIndent = indent;
|
---|
| 79 | ++options.indentLevel;
|
---|
| 80 | indent = options.indent.repeat(options.indentLevel)
|
---|
| 81 | };
|
---|
| 82 | // Handle options
|
---|
| 83 | const defaults = {
|
---|
| 84 | 'escapeEverything': false,
|
---|
| 85 | 'minimal': false,
|
---|
| 86 | 'isScriptContext': false,
|
---|
| 87 | 'quotes': 'single',
|
---|
| 88 | 'wrap': false,
|
---|
| 89 | 'es6': false,
|
---|
| 90 | 'json': false,
|
---|
| 91 | 'compact': true,
|
---|
| 92 | 'lowercaseHex': false,
|
---|
| 93 | 'numbers': 'decimal',
|
---|
| 94 | 'indent': '\t',
|
---|
| 95 | 'indentLevel': 0,
|
---|
| 96 | '__inline1__': false,
|
---|
| 97 | '__inline2__': false
|
---|
| 98 | };
|
---|
| 99 | const json = options && options.json;
|
---|
| 100 | if (json) {
|
---|
| 101 | defaults.quotes = 'double';
|
---|
| 102 | defaults.wrap = true;
|
---|
| 103 | }
|
---|
| 104 | options = extend(defaults, options);
|
---|
| 105 | if (
|
---|
| 106 | options.quotes != 'single' &&
|
---|
| 107 | options.quotes != 'double' &&
|
---|
| 108 | options.quotes != 'backtick'
|
---|
| 109 | ) {
|
---|
| 110 | options.quotes = 'single';
|
---|
| 111 | }
|
---|
| 112 | const quote = options.quotes == 'double' ?
|
---|
| 113 | '"' :
|
---|
| 114 | (options.quotes == 'backtick' ?
|
---|
| 115 | '`' :
|
---|
| 116 | '\''
|
---|
| 117 | );
|
---|
| 118 | const compact = options.compact;
|
---|
| 119 | const lowercaseHex = options.lowercaseHex;
|
---|
| 120 | let indent = options.indent.repeat(options.indentLevel);
|
---|
| 121 | let oldIndent = '';
|
---|
| 122 | const inline1 = options.__inline1__;
|
---|
| 123 | const inline2 = options.__inline2__;
|
---|
| 124 | const newLine = compact ? '' : '\n';
|
---|
| 125 | let result;
|
---|
| 126 | let isEmpty = true;
|
---|
| 127 | const useBinNumbers = options.numbers == 'binary';
|
---|
| 128 | const useOctNumbers = options.numbers == 'octal';
|
---|
| 129 | const useDecNumbers = options.numbers == 'decimal';
|
---|
| 130 | const useHexNumbers = options.numbers == 'hexadecimal';
|
---|
| 131 |
|
---|
| 132 | if (json && argument && isFunction(argument.toJSON)) {
|
---|
| 133 | argument = argument.toJSON();
|
---|
| 134 | }
|
---|
| 135 |
|
---|
| 136 | if (!isString(argument)) {
|
---|
| 137 | if (isMap(argument)) {
|
---|
| 138 | if (argument.size == 0) {
|
---|
| 139 | return 'new Map()';
|
---|
| 140 | }
|
---|
| 141 | if (!compact) {
|
---|
| 142 | options.__inline1__ = true;
|
---|
| 143 | options.__inline2__ = false;
|
---|
| 144 | }
|
---|
| 145 | return 'new Map(' + jsesc(Array.from(argument), options) + ')';
|
---|
| 146 | }
|
---|
| 147 | if (isSet(argument)) {
|
---|
| 148 | if (argument.size == 0) {
|
---|
| 149 | return 'new Set()';
|
---|
| 150 | }
|
---|
| 151 | return 'new Set(' + jsesc(Array.from(argument), options) + ')';
|
---|
| 152 | }
|
---|
| 153 | if (isBuffer(argument)) {
|
---|
| 154 | if (argument.length == 0) {
|
---|
| 155 | return 'Buffer.from([])';
|
---|
| 156 | }
|
---|
| 157 | return 'Buffer.from(' + jsesc(Array.from(argument), options) + ')';
|
---|
| 158 | }
|
---|
| 159 | if (isArray(argument)) {
|
---|
| 160 | result = [];
|
---|
| 161 | options.wrap = true;
|
---|
| 162 | if (inline1) {
|
---|
| 163 | options.__inline1__ = false;
|
---|
| 164 | options.__inline2__ = true;
|
---|
| 165 | }
|
---|
| 166 | if (!inline2) {
|
---|
| 167 | increaseIndentation();
|
---|
| 168 | }
|
---|
| 169 | forEach(argument, (value) => {
|
---|
| 170 | isEmpty = false;
|
---|
| 171 | if (inline2) {
|
---|
| 172 | options.__inline2__ = false;
|
---|
| 173 | }
|
---|
| 174 | result.push(
|
---|
| 175 | (compact || inline2 ? '' : indent) +
|
---|
| 176 | jsesc(value, options)
|
---|
| 177 | );
|
---|
| 178 | });
|
---|
| 179 | if (isEmpty) {
|
---|
| 180 | return '[]';
|
---|
| 181 | }
|
---|
| 182 | if (inline2) {
|
---|
| 183 | return '[' + result.join(', ') + ']';
|
---|
| 184 | }
|
---|
| 185 | return '[' + newLine + result.join(',' + newLine) + newLine +
|
---|
| 186 | (compact ? '' : oldIndent) + ']';
|
---|
| 187 | } else if (isNumber(argument)) {
|
---|
| 188 | if (json) {
|
---|
| 189 | // Some number values (e.g. `Infinity`) cannot be represented in JSON.
|
---|
| 190 | return JSON.stringify(argument);
|
---|
| 191 | }
|
---|
| 192 | if (useDecNumbers) {
|
---|
| 193 | return String(argument);
|
---|
| 194 | }
|
---|
| 195 | if (useHexNumbers) {
|
---|
| 196 | let hexadecimal = argument.toString(16);
|
---|
| 197 | if (!lowercaseHex) {
|
---|
| 198 | hexadecimal = hexadecimal.toUpperCase();
|
---|
| 199 | }
|
---|
| 200 | return '0x' + hexadecimal;
|
---|
| 201 | }
|
---|
| 202 | if (useBinNumbers) {
|
---|
| 203 | return '0b' + argument.toString(2);
|
---|
| 204 | }
|
---|
| 205 | if (useOctNumbers) {
|
---|
| 206 | return '0o' + argument.toString(8);
|
---|
| 207 | }
|
---|
| 208 | } else if (!isObject(argument)) {
|
---|
| 209 | if (json) {
|
---|
| 210 | // For some values (e.g. `undefined`, `function` objects),
|
---|
| 211 | // `JSON.stringify(value)` returns `undefined` (which isn’t valid
|
---|
| 212 | // JSON) instead of `'null'`.
|
---|
| 213 | return JSON.stringify(argument) || 'null';
|
---|
| 214 | }
|
---|
| 215 | return String(argument);
|
---|
| 216 | } else { // it’s an object
|
---|
| 217 | result = [];
|
---|
| 218 | options.wrap = true;
|
---|
| 219 | increaseIndentation();
|
---|
| 220 | forOwn(argument, (key, value) => {
|
---|
| 221 | isEmpty = false;
|
---|
| 222 | result.push(
|
---|
| 223 | (compact ? '' : indent) +
|
---|
| 224 | jsesc(key, options) + ':' +
|
---|
| 225 | (compact ? '' : ' ') +
|
---|
| 226 | jsesc(value, options)
|
---|
| 227 | );
|
---|
| 228 | });
|
---|
| 229 | if (isEmpty) {
|
---|
| 230 | return '{}';
|
---|
| 231 | }
|
---|
| 232 | return '{' + newLine + result.join(',' + newLine) + newLine +
|
---|
| 233 | (compact ? '' : oldIndent) + '}';
|
---|
| 234 | }
|
---|
| 235 | }
|
---|
| 236 |
|
---|
| 237 | const string = argument;
|
---|
| 238 | // Loop over each code unit in the string and escape it
|
---|
| 239 | let index = -1;
|
---|
| 240 | const length = string.length;
|
---|
| 241 | result = '';
|
---|
| 242 | while (++index < length) {
|
---|
| 243 | const character = string.charAt(index);
|
---|
| 244 | if (options.es6) {
|
---|
| 245 | const first = string.charCodeAt(index);
|
---|
| 246 | if ( // check if it’s the start of a surrogate pair
|
---|
| 247 | first >= 0xD800 && first <= 0xDBFF && // high surrogate
|
---|
| 248 | length > index + 1 // there is a next code unit
|
---|
| 249 | ) {
|
---|
| 250 | const second = string.charCodeAt(index + 1);
|
---|
| 251 | if (second >= 0xDC00 && second <= 0xDFFF) { // low surrogate
|
---|
| 252 | // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
|
---|
| 253 | const codePoint = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
|
---|
| 254 | let hexadecimal = codePoint.toString(16);
|
---|
| 255 | if (!lowercaseHex) {
|
---|
| 256 | hexadecimal = hexadecimal.toUpperCase();
|
---|
| 257 | }
|
---|
| 258 | result += '\\u{' + hexadecimal + '}';
|
---|
| 259 | ++index;
|
---|
| 260 | continue;
|
---|
| 261 | }
|
---|
| 262 | }
|
---|
| 263 | }
|
---|
| 264 | if (!options.escapeEverything) {
|
---|
| 265 | if (regexWhitelist.test(character)) {
|
---|
| 266 | // It’s a printable ASCII character that is not `"`, `'` or `\`,
|
---|
| 267 | // so don’t escape it.
|
---|
| 268 | result += character;
|
---|
| 269 | continue;
|
---|
| 270 | }
|
---|
| 271 | if (character == '"') {
|
---|
| 272 | result += quote == character ? '\\"' : character;
|
---|
| 273 | continue;
|
---|
| 274 | }
|
---|
| 275 | if (character == '`') {
|
---|
| 276 | result += quote == character ? '\\`' : character;
|
---|
| 277 | continue;
|
---|
| 278 | }
|
---|
| 279 | if (character == '\'') {
|
---|
| 280 | result += quote == character ? '\\\'' : character;
|
---|
| 281 | continue;
|
---|
| 282 | }
|
---|
| 283 | }
|
---|
| 284 | if (
|
---|
| 285 | character == '\0' &&
|
---|
| 286 | !json &&
|
---|
| 287 | !regexDigit.test(string.charAt(index + 1))
|
---|
| 288 | ) {
|
---|
| 289 | result += '\\0';
|
---|
| 290 | continue;
|
---|
| 291 | }
|
---|
| 292 | if (regexSingleEscape.test(character)) {
|
---|
| 293 | // no need for a `hasOwnProperty` check here
|
---|
| 294 | result += singleEscapes[character];
|
---|
| 295 | continue;
|
---|
| 296 | }
|
---|
| 297 | const charCode = character.charCodeAt(0);
|
---|
| 298 | if (options.minimal && charCode != 0x2028 && charCode != 0x2029) {
|
---|
| 299 | result += character;
|
---|
| 300 | continue;
|
---|
| 301 | }
|
---|
| 302 | let hexadecimal = charCode.toString(16);
|
---|
| 303 | if (!lowercaseHex) {
|
---|
| 304 | hexadecimal = hexadecimal.toUpperCase();
|
---|
| 305 | }
|
---|
| 306 | const longhand = hexadecimal.length > 2 || json;
|
---|
| 307 | const escaped = '\\' + (longhand ? 'u' : 'x') +
|
---|
| 308 | ('0000' + hexadecimal).slice(longhand ? -4 : -2);
|
---|
| 309 | result += escaped;
|
---|
| 310 | continue;
|
---|
| 311 | }
|
---|
| 312 | if (options.wrap) {
|
---|
| 313 | result = quote + result + quote;
|
---|
| 314 | }
|
---|
| 315 | if (quote == '`') {
|
---|
| 316 | result = result.replace(/\$\{/g, '\\\$\{');
|
---|
| 317 | }
|
---|
| 318 | if (options.isScriptContext) {
|
---|
| 319 | // https://mathiasbynens.be/notes/etago
|
---|
| 320 | return result
|
---|
| 321 | .replace(/<\/(script|style)/gi, '<\\/$1')
|
---|
| 322 | .replace(/<!--/g, json ? '\\u003C!--' : '\\x3C!--');
|
---|
| 323 | }
|
---|
| 324 | return result;
|
---|
| 325 | };
|
---|
| 326 |
|
---|
| 327 | jsesc.version = '2.5.2';
|
---|
| 328 |
|
---|
| 329 | module.exports = jsesc;
|
---|