Mod Function

Mod Function

var escapeRegexpSpecialChars = function(str) {
    return str.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
}
var funcModder = function(func, replacements) {
    var funcStr = func.toString();
    Object.keys(replacements).forEach(function(replaceKey) {
        var escappedReplacement = escapeRegexpSpecialChars(replaceKey);
        funcStr = funcStr.replace(new RegExp(escappedReplacement, 'g'), replacements[replaceKey]);
    });
    return (function() {eval('var fn = ' + funcStr); return fn;})().toString(); // jshint ignore:line
};