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52 lines
1.4 KiB
52 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 $charCodeAt = callBound('String.prototype.charCodeAt'); |
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var $numberToString = callBound('Number.prototype.toString'); |
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var $toLowerCase = callBound('String.prototype.toLowerCase'); |
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var $strSlice = callBound('String.prototype.slice'); |
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var $strSplit = callBound('String.prototype.split'); |
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var Type = require('./Type'); |
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// https://ecma-international.org/ecma-262/6.0/#sec-quotejsonstring |
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var escapes = { |
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'\u0008': 'b', |
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'\u000C': 'f', |
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'\u000A': 'n', |
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'\u000D': 'r', |
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'\u0009': 't' |
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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 $TypeError('Assertion failed: `value` must be a String'); |
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} |
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var product = '"'; |
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if (value) { |
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forEach($strSplit(value), function (C) { |
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if (C === '"' || C === '\\') { |
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product += '\u005C' + C; |
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} else if (C === '\u0008' || C === '\u000C' || C === '\u000A' || C === '\u000D' || C === '\u0009') { |
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var abbrev = escapes[C]; |
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product += '\u005C' + abbrev; |
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} else { |
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var cCharCode = $charCodeAt(C, 0); |
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if (cCharCode < 0x20) { |
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product += '\u005Cu' + $toLowerCase($strSlice('0000' + $numberToString(cCharCode, 16), -4)); |
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} else { |
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product += C; |
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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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