source: frontend/node_modules/core-js-pure/modules/es.json.stringify.js

Last change on this file was 9af201e, checked in by MBK <marija.karapandzova@…>, 11 days ago

Fix frontend appearance

  • Property mode set to 100644
File size: 5.0 KB
Line 
1'use strict';
2var $ = require('../internals/export');
3var getBuiltIn = require('../internals/get-built-in');
4var apply = require('../internals/function-apply');
5var call = require('../internals/function-call');
6var uncurryThis = require('../internals/function-uncurry-this');
7var fails = require('../internals/fails');
8var isArray = require('../internals/is-array');
9var isCallable = require('../internals/is-callable');
10var isRawJSON = require('../internals/is-raw-json');
11var isSymbol = require('../internals/is-symbol');
12var classof = require('../internals/classof-raw');
13var toString = require('../internals/to-string');
14var arraySlice = require('../internals/array-slice');
15var parseJSONString = require('../internals/parse-json-string');
16var uid = require('../internals/uid');
17var NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');
18var NATIVE_RAW_JSON = require('../internals/native-raw-json');
19
20var $String = String;
21var $stringify = getBuiltIn('JSON', 'stringify');
22var exec = uncurryThis(/./.exec);
23var charAt = uncurryThis(''.charAt);
24var charCodeAt = uncurryThis(''.charCodeAt);
25var replace = uncurryThis(''.replace);
26var slice = uncurryThis(''.slice);
27var push = uncurryThis([].push);
28var numberToString = uncurryThis(1.1.toString);
29
30var surrogates = /[\uD800-\uDFFF]/g;
31var leadingSurrogates = /^[\uD800-\uDBFF]$/;
32var trailingSurrogates = /^[\uDC00-\uDFFF]$/;
33
34var MARK = uid();
35var MARK_LENGTH = MARK.length;
36
37var WRONG_SYMBOLS_CONVERSION = !NATIVE_SYMBOL || fails(function () {
38 var symbol = getBuiltIn('Symbol')('stringify detection');
39 // MS Edge converts symbol values to JSON as {}
40 return $stringify([symbol]) !== '[null]'
41 // WebKit converts symbol values to JSON as null
42 || $stringify({ a: symbol }) !== '{}'
43 // V8 throws on boxed symbols
44 || $stringify(Object(symbol)) !== '{}';
45});
46
47// https://github.com/tc39/proposal-well-formed-stringify
48var ILL_FORMED_UNICODE = fails(function () {
49 return $stringify('\uDF06\uD834') !== '"\\udf06\\ud834"'
50 || $stringify('\uDEAD') !== '"\\udead"';
51});
52
53var stringifyWithProperSymbolsConversion = WRONG_SYMBOLS_CONVERSION ? function (it, replacer) {
54 var args = arraySlice(arguments);
55 var $replacer = getReplacerFunction(replacer);
56 if (!isCallable($replacer) && (it === undefined || isSymbol(it))) return; // IE8 returns string on undefined
57 args[1] = function (key, value) {
58 // some old implementations (like WebKit) could pass numbers as keys
59 if (isCallable($replacer)) value = call($replacer, this, $String(key), value);
60 if (!isSymbol(value)) return value;
61 };
62 return apply($stringify, null, args);
63} : $stringify;
64
65var fixIllFormedJSON = function (match, offset, string) {
66 var prev = charAt(string, offset - 1);
67 var next = charAt(string, offset + 1);
68 if (
69 (exec(leadingSurrogates, match) && !exec(trailingSurrogates, next)) ||
70 (exec(trailingSurrogates, match) && !exec(leadingSurrogates, prev))
71 ) {
72 return '\\u' + numberToString(charCodeAt(match, 0), 16);
73 } return match;
74};
75
76var getReplacerFunction = function (replacer) {
77 if (isCallable(replacer)) return replacer;
78 if (!isArray(replacer)) return;
79 var rawLength = replacer.length;
80 var keys = [];
81 for (var i = 0; i < rawLength; i++) {
82 var element = replacer[i];
83 if (typeof element == 'string') push(keys, element);
84 else if (typeof element == 'number' || classof(element) === 'Number' || classof(element) === 'String') push(keys, toString(element));
85 }
86 var keysLength = keys.length;
87 var root = true;
88 return function (key, value) {
89 if (root) {
90 root = false;
91 return value;
92 }
93 if (isArray(this)) return value;
94 for (var j = 0; j < keysLength; j++) if (keys[j] === key) return value;
95 };
96};
97
98// `JSON.stringify` method
99// https://tc39.es/ecma262/#sec-json.stringify
100// https://github.com/tc39/proposal-json-parse-with-source
101if ($stringify) $({ target: 'JSON', stat: true, arity: 3, forced: WRONG_SYMBOLS_CONVERSION || ILL_FORMED_UNICODE || !NATIVE_RAW_JSON }, {
102 stringify: function stringify(text, replacer, space) {
103 var replacerFunction = getReplacerFunction(replacer);
104 var rawStrings = [];
105
106 var json = stringifyWithProperSymbolsConversion(text, function (key, value) {
107 // some old implementations (like WebKit) could pass numbers as keys
108 var v = isCallable(replacerFunction) ? call(replacerFunction, this, $String(key), value) : value;
109 return !NATIVE_RAW_JSON && isRawJSON(v) ? MARK + (push(rawStrings, v.rawJSON) - 1) : v;
110 }, space);
111
112 if (typeof json != 'string') return json;
113
114 if (ILL_FORMED_UNICODE) json = replace(json, surrogates, fixIllFormedJSON);
115
116 if (NATIVE_RAW_JSON) return json;
117
118 var result = '';
119 var length = json.length;
120
121 for (var i = 0; i < length; i++) {
122 var chr = charAt(json, i);
123 if (chr === '"') {
124 var end = parseJSONString(json, ++i).end - 1;
125 var string = slice(json, i, end);
126 result += slice(string, 0, MARK_LENGTH) === MARK
127 ? rawStrings[slice(string, MARK_LENGTH)]
128 : '"' + string + '"';
129 i = end;
130 } else result += chr;
131 }
132
133 return result;
134 }
135});
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