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