[6a3a178] | 1 | 'use strict';
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| 2 |
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| 3 | const object = {};
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| 4 | const hasOwnProperty = object.hasOwnProperty;
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| 5 | const forOwn = (object, callback) => {
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| 6 | for (const key in object) {
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| 7 | if (hasOwnProperty.call(object, key)) {
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| 8 | callback(key, object[key]);
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| 9 | }
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| 10 | }
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| 11 | };
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| 12 |
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| 13 | const extend = (destination, source) => {
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| 14 | if (!source) {
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| 15 | return destination;
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| 16 | }
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| 17 | forOwn(source, (key, value) => {
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| 18 | destination[key] = value;
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| 19 | });
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| 20 | return destination;
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| 21 | };
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| 22 |
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| 23 | const forEach = (array, callback) => {
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| 24 | const length = array.length;
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| 25 | let index = -1;
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| 26 | while (++index < length) {
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| 27 | callback(array[index]);
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| 28 | }
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| 29 | };
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| 30 |
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| 31 | const toString = object.toString;
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| 32 | const isArray = Array.isArray;
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| 33 | const isBuffer = Buffer.isBuffer;
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| 34 | const isObject = (value) => {
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| 35 | // This is a very simple check, but it’s good enough for what we need.
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| 36 | return toString.call(value) == '[object Object]';
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| 37 | };
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| 38 | const isString = (value) => {
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| 39 | return typeof value == 'string' ||
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| 40 | toString.call(value) == '[object String]';
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| 41 | };
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| 42 | const isNumber = (value) => {
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| 43 | return typeof value == 'number' ||
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| 44 | toString.call(value) == '[object Number]';
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| 45 | };
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| 46 | const isFunction = (value) => {
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| 47 | return typeof value == 'function';
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| 48 | };
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| 49 | const isMap = (value) => {
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| 50 | return toString.call(value) == '[object Map]';
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| 51 | };
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| 52 | const isSet = (value) => {
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| 53 | return toString.call(value) == '[object Set]';
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| 54 | };
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| 55 |
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| 56 | /*--------------------------------------------------------------------------*/
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| 57 |
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| 58 | // https://mathiasbynens.be/notes/javascript-escapes#single
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| 59 | const singleEscapes = {
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| 60 | '"': '\\"',
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| 61 | '\'': '\\\'',
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| 62 | '\\': '\\\\',
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| 63 | '\b': '\\b',
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| 64 | '\f': '\\f',
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| 65 | '\n': '\\n',
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| 66 | '\r': '\\r',
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| 67 | '\t': '\\t'
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| 68 | // `\v` is omitted intentionally, because in IE < 9, '\v' == 'v'.
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| 69 | // '\v': '\\x0B'
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| 70 | };
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| 71 | const regexSingleEscape = /["'\\\b\f\n\r\t]/;
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| 72 |
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| 73 | const regexDigit = /[0-9]/;
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| 74 | const regexWhitelist = /[ !#-&\(-\[\]-_a-~]/;
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| 75 |
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| 76 | const jsesc = (argument, options) => {
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| 77 | const increaseIndentation = () => {
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| 78 | oldIndent = indent;
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| 79 | ++options.indentLevel;
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| 80 | indent = options.indent.repeat(options.indentLevel)
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| 81 | };
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| 82 | // Handle options
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| 83 | const defaults = {
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| 84 | 'escapeEverything': false,
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| 85 | 'minimal': false,
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| 86 | 'isScriptContext': false,
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| 87 | 'quotes': 'single',
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| 88 | 'wrap': false,
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| 89 | 'es6': false,
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| 90 | 'json': false,
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| 91 | 'compact': true,
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| 92 | 'lowercaseHex': false,
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| 93 | 'numbers': 'decimal',
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| 94 | 'indent': '\t',
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| 95 | 'indentLevel': 0,
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| 96 | '__inline1__': false,
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| 97 | '__inline2__': false
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| 98 | };
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| 99 | const json = options && options.json;
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| 100 | if (json) {
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| 101 | defaults.quotes = 'double';
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| 102 | defaults.wrap = true;
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| 103 | }
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| 104 | options = extend(defaults, options);
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| 105 | if (
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| 106 | options.quotes != 'single' &&
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| 107 | options.quotes != 'double' &&
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| 108 | options.quotes != 'backtick'
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| 109 | ) {
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| 110 | options.quotes = 'single';
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| 111 | }
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| 112 | const quote = options.quotes == 'double' ?
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| 113 | '"' :
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| 114 | (options.quotes == 'backtick' ?
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| 115 | '`' :
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| 116 | '\''
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| 117 | );
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| 118 | const compact = options.compact;
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| 119 | const lowercaseHex = options.lowercaseHex;
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| 120 | let indent = options.indent.repeat(options.indentLevel);
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| 121 | let oldIndent = '';
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| 122 | const inline1 = options.__inline1__;
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| 123 | const inline2 = options.__inline2__;
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| 124 | const newLine = compact ? '' : '\n';
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| 125 | let result;
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| 126 | let isEmpty = true;
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| 127 | const useBinNumbers = options.numbers == 'binary';
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| 128 | const useOctNumbers = options.numbers == 'octal';
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| 129 | const useDecNumbers = options.numbers == 'decimal';
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| 130 | const useHexNumbers = options.numbers == 'hexadecimal';
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| 131 |
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| 132 | if (json && argument && isFunction(argument.toJSON)) {
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| 133 | argument = argument.toJSON();
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| 134 | }
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| 135 |
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| 136 | if (!isString(argument)) {
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| 137 | if (isMap(argument)) {
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| 138 | if (argument.size == 0) {
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| 139 | return 'new Map()';
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| 140 | }
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| 141 | if (!compact) {
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| 142 | options.__inline1__ = true;
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| 143 | options.__inline2__ = false;
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| 144 | }
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| 145 | return 'new Map(' + jsesc(Array.from(argument), options) + ')';
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| 146 | }
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| 147 | if (isSet(argument)) {
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| 148 | if (argument.size == 0) {
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| 149 | return 'new Set()';
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| 150 | }
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| 151 | return 'new Set(' + jsesc(Array.from(argument), options) + ')';
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| 152 | }
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| 153 | if (isBuffer(argument)) {
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| 154 | if (argument.length == 0) {
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| 155 | return 'Buffer.from([])';
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| 156 | }
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| 157 | return 'Buffer.from(' + jsesc(Array.from(argument), options) + ')';
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| 158 | }
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| 159 | if (isArray(argument)) {
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| 160 | result = [];
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| 161 | options.wrap = true;
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| 162 | if (inline1) {
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| 163 | options.__inline1__ = false;
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| 164 | options.__inline2__ = true;
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| 165 | }
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| 166 | if (!inline2) {
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| 167 | increaseIndentation();
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| 168 | }
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| 169 | forEach(argument, (value) => {
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| 170 | isEmpty = false;
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| 171 | if (inline2) {
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| 172 | options.__inline2__ = false;
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| 173 | }
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| 174 | result.push(
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| 175 | (compact || inline2 ? '' : indent) +
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| 176 | jsesc(value, options)
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| 177 | );
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| 178 | });
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| 179 | if (isEmpty) {
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| 180 | return '[]';
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| 181 | }
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| 182 | if (inline2) {
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| 183 | return '[' + result.join(', ') + ']';
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| 184 | }
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| 185 | return '[' + newLine + result.join(',' + newLine) + newLine +
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| 186 | (compact ? '' : oldIndent) + ']';
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| 187 | } else if (isNumber(argument)) {
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| 188 | if (json) {
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| 189 | // Some number values (e.g. `Infinity`) cannot be represented in JSON.
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| 190 | return JSON.stringify(argument);
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| 191 | }
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| 192 | if (useDecNumbers) {
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| 193 | return String(argument);
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| 194 | }
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| 195 | if (useHexNumbers) {
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| 196 | let hexadecimal = argument.toString(16);
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| 197 | if (!lowercaseHex) {
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| 198 | hexadecimal = hexadecimal.toUpperCase();
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| 199 | }
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| 200 | return '0x' + hexadecimal;
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| 201 | }
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| 202 | if (useBinNumbers) {
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| 203 | return '0b' + argument.toString(2);
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| 204 | }
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| 205 | if (useOctNumbers) {
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| 206 | return '0o' + argument.toString(8);
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| 207 | }
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| 208 | } else if (!isObject(argument)) {
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| 209 | if (json) {
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| 210 | // For some values (e.g. `undefined`, `function` objects),
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| 211 | // `JSON.stringify(value)` returns `undefined` (which isn’t valid
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| 212 | // JSON) instead of `'null'`.
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| 213 | return JSON.stringify(argument) || 'null';
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| 214 | }
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| 215 | return String(argument);
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| 216 | } else { // it’s an object
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| 217 | result = [];
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| 218 | options.wrap = true;
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| 219 | increaseIndentation();
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| 220 | forOwn(argument, (key, value) => {
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| 221 | isEmpty = false;
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| 222 | result.push(
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| 223 | (compact ? '' : indent) +
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| 224 | jsesc(key, options) + ':' +
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| 225 | (compact ? '' : ' ') +
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| 226 | jsesc(value, options)
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| 227 | );
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| 228 | });
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| 229 | if (isEmpty) {
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| 230 | return '{}';
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| 231 | }
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| 232 | return '{' + newLine + result.join(',' + newLine) + newLine +
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| 233 | (compact ? '' : oldIndent) + '}';
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| 234 | }
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| 235 | }
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| 236 |
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| 237 | const string = argument;
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| 238 | // Loop over each code unit in the string and escape it
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| 239 | let index = -1;
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| 240 | const length = string.length;
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| 241 | result = '';
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| 242 | while (++index < length) {
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| 243 | const character = string.charAt(index);
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| 244 | if (options.es6) {
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| 245 | const first = string.charCodeAt(index);
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| 246 | if ( // check if it’s the start of a surrogate pair
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| 247 | first >= 0xD800 && first <= 0xDBFF && // high surrogate
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| 248 | length > index + 1 // there is a next code unit
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| 249 | ) {
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| 250 | const second = string.charCodeAt(index + 1);
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| 251 | if (second >= 0xDC00 && second <= 0xDFFF) { // low surrogate
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| 252 | // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
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| 253 | const codePoint = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
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| 254 | let hexadecimal = codePoint.toString(16);
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| 255 | if (!lowercaseHex) {
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| 256 | hexadecimal = hexadecimal.toUpperCase();
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| 257 | }
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| 258 | result += '\\u{' + hexadecimal + '}';
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| 259 | ++index;
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| 260 | continue;
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| 261 | }
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| 262 | }
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| 263 | }
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| 264 | if (!options.escapeEverything) {
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| 265 | if (regexWhitelist.test(character)) {
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| 266 | // It’s a printable ASCII character that is not `"`, `'` or `\`,
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| 267 | // so don’t escape it.
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| 268 | result += character;
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| 269 | continue;
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| 270 | }
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| 271 | if (character == '"') {
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| 272 | result += quote == character ? '\\"' : character;
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| 273 | continue;
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| 274 | }
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| 275 | if (character == '`') {
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| 276 | result += quote == character ? '\\`' : character;
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| 277 | continue;
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| 278 | }
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| 279 | if (character == '\'') {
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| 280 | result += quote == character ? '\\\'' : character;
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| 281 | continue;
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| 282 | }
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| 283 | }
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| 284 | if (
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| 285 | character == '\0' &&
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| 286 | !json &&
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| 287 | !regexDigit.test(string.charAt(index + 1))
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| 288 | ) {
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| 289 | result += '\\0';
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| 290 | continue;
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| 291 | }
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| 292 | if (regexSingleEscape.test(character)) {
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| 293 | // no need for a `hasOwnProperty` check here
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| 294 | result += singleEscapes[character];
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| 295 | continue;
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| 296 | }
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| 297 | const charCode = character.charCodeAt(0);
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| 298 | if (options.minimal && charCode != 0x2028 && charCode != 0x2029) {
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| 299 | result += character;
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| 300 | continue;
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| 301 | }
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| 302 | let hexadecimal = charCode.toString(16);
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| 303 | if (!lowercaseHex) {
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| 304 | hexadecimal = hexadecimal.toUpperCase();
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| 305 | }
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| 306 | const longhand = hexadecimal.length > 2 || json;
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| 307 | const escaped = '\\' + (longhand ? 'u' : 'x') +
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| 308 | ('0000' + hexadecimal).slice(longhand ? -4 : -2);
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| 309 | result += escaped;
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| 310 | continue;
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| 311 | }
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| 312 | if (options.wrap) {
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| 313 | result = quote + result + quote;
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| 314 | }
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| 315 | if (quote == '`') {
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| 316 | result = result.replace(/\$\{/g, '\\\$\{');
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| 317 | }
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| 318 | if (options.isScriptContext) {
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| 319 | // https://mathiasbynens.be/notes/etago
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| 320 | return result
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| 321 | .replace(/<\/(script|style)/gi, '<\\/$1')
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| 322 | .replace(/<!--/g, json ? '\\u003C!--' : '\\x3C!--');
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| 323 | }
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| 324 | return result;
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| 325 | };
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| 326 |
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| 327 | jsesc.version = '2.5.2';
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| 328 |
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| 329 | module.exports = jsesc;
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