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22 lines
644 B
22 lines
644 B
module.exports = function (string) {
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return ('' + string).replace(/["'\\\n\r\u2028\u2029]/g, function (character) {
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// Escape all characters not included in SingleStringCharacters and
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// DoubleStringCharacters on
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// http://www.ecma-international.org/ecma-262/5.1/#sec-7.8.4
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switch (character) {
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case '"':
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case "'":
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case '\\':
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return '\\' + character
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// Four possible LineTerminator characters need to be escaped:
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case '\n':
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return '\\n'
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case '\r':
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return '\\r'
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case '\u2028':
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return '\\u2028'
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case '\u2029':
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return '\\u2029'
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}
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})
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}
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