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function test1(a, b, c) {
  var r = namedParams.apply(test1, arguments);
  a = r[0]; b = r[1]; c = r[2]; 
  if (a !== 'a' || b !== 'b' || c !== 'c') 
    throw new Error ('incorrect params!');
}

test1('a', 'b', 'c');
test1({c: 'c', a: 'a', b: 'b'});

function namedParams() {
    var functionArgsRegex = /^function\s*[^\(]*\(\s*([^\)]*)\)/m,
        func = this,
        funcArgsPart = func.toString().match(functionArgsRegex)[1],
        args = funcArgsPart.split(',').map( function (arg) { return arg.trim() }),
        vals = [],
        arg0 = arguments.length === 1 && arguments[0];

    if (arg0 
      && typeof arg0 === "object"
      && typeof arg0 !== "function"
      && !Array.isArray(arg0)
      && Object.keys(arg0).length > 0) {
        var paramsMap = arg0;
        Object.keys(paramsMap)
            .forEach (function(key) {
                var index = args.indexOf(key);
                if (~index) {
                    vals[index] = paramsMap[key];
                }
            });
    }
    else {
        for (var i = 0, len = arguments.length; i < len; i++) {
            vals.push(arguments[i]);
        }
    }

    return vals;
}

if (module && module.exports) {
    module.exports = namedParams;
}