/**
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* JSON parse.
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*
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* @see Based on jQuery#parseJSON (MIT) and JSON2
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* @api private
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*/
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var rvalidchars = /^[\],:{}\s]*$/;
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var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
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var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
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var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
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var rtrimLeft = /^\s+/;
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var rtrimRight = /\s+$/;
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module.exports = function parsejson(data) {
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if ('string' != typeof data || !data) {
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return null;
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}
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data = data.replace(rtrimLeft, '').replace(rtrimRight, '');
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// Attempt to parse using the native JSON parser first
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if (global.JSON && JSON.parse) {
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return JSON.parse(data);
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}
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if (rvalidchars.test(data.replace(rvalidescape, '@')
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.replace(rvalidtokens, ']')
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.replace(rvalidbraces, ''))) {
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return (new Function('return ' + data))();
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}
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};
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