gistfile1.js

var buildParser = Y.cached(function (prefix, suffix, separator, decimal) {
    var regexBits = []
        regex;
    
    if (prefix) {
        regexBits.push('^' + prefix.replace(safeRegExp, '\\$1'));
    }
    if (suffix) {
        regexBits.push(suffix.replace(safeRegExp, '\\$1') + '$');
    }
    if (separator) {
        regexBits.push(separator.replace(safeRegExp, '\\$1') + '(?=\\d)');
    }
    
    regex = new RegExp('(?:' + regexBits.join('|') + ')', 'g');
    
    if (decimal === '.') {
        decimal = null;
    }
    
    return function (val) {
        val = val.replace(regex, '');
        
        return decimal ? val.replace(decimal, '.') : val;
    }
});

parse: function(data, config) {
    var parser;

    if (config && typeof data === 'string') {
        // use the existing one or build it if needed
        parser = parse._parser || buildParser(config.prefix, config.suffix, config.thousandsSeparator, config.decimalSeparator);
        
        // Put the parser function as a protected property of the 
        // function?
        parse._parser = parser;

        data = parser(data);
    }

    if (data !== null && data !== "") {
        data = +data;
        
        // catch NaN and ±Infinity
        if (!isFinite(data)) {
            data = null;
        }
    } else {
        data = null;
    }
    
    // on the same line to get stripped for raw/min.js by build system
    if (data === null) { Y.log("Could not parse data to type Number", "warn", "number"); }
    
    return data;
}