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54 lines
1.4 KiB
54 lines
1.4 KiB
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $TypeError = GetIntrinsic('%TypeError%'); |
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var callBound = require('call-bind/callBound'); |
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var forEach = require('../helpers/forEach'); |
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var isLeadingSurrogate = require('../helpers/isLeadingSurrogate'); |
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var isTrailingSurrogate = require('../helpers/isTrailingSurrogate'); |
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var $charCodeAt = callBound('String.prototype.charCodeAt'); |
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var StringToCodePoints = require('./StringToCodePoints'); |
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var Type = require('./Type'); |
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var UnicodeEscape = require('./UnicodeEscape'); |
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var UTF16EncodeCodePoint = require('./UTF16EncodeCodePoint'); |
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var has = require('has'); |
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// https://ecma-international.org/ecma-262/12.0/#sec-quotejsonstring |
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var escapes = { |
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'\u0008': '\\b', |
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'\u0009': '\\t', |
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'\u000A': '\\n', |
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'\u000C': '\\f', |
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'\u000D': '\\r', |
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'\u0022': '\\"', |
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'\u005c': '\\\\' |
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}; |
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module.exports = function QuoteJSONString(value) { |
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if (Type(value) !== 'String') { |
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throw new $TypeError('Assertion failed: `value` must be a String'); |
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} |
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var product = '"'; |
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if (value) { |
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forEach(StringToCodePoints(value), function (C) { |
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if (has(escapes, C)) { |
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product += escapes[C]; |
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} else { |
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var cCharCode = $charCodeAt(C, 0); |
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if (cCharCode < 0x20 || isLeadingSurrogate(C) || isTrailingSurrogate(C)) { |
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product += UnicodeEscape(C); |
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} else { |
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product += UTF16EncodeCodePoint(cCharCode); |
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} |
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} |
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}); |
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} |
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product += '"'; |
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return product; |
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};
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