var slice = Array.prototype.slice;

function _curry(n, fn, curryArgs) {
  return function() {
    var args = slice.call(arguments),
      concatArgs = curryArgs.concat(args);

    if (n > concatArgs.length) {
      return _curry(n, fn, concatArgs);
    } else {
      return fn.apply(this, slice.call(concatArgs, 0, n));
    }
  };
}

export function curry(fn) {
  return _curry(fn.length, fn, []);
}

export function curryN(n, fn) {
  return _curry(n, fn, []);
}

export var curry1 = curryN(2, curryN)(1);
export var curry2 = curryN(2, curryN)(2);
export var curry3 = curryN(2, curryN)(3);
export var curry4 = curryN(2, curryN)(4);