1var baseCreate = require('./_baseCreate'),
2    isObject = require('./isObject');
3
4/**
5 * Creates a function that produces an instance of `Ctor` regardless of
6 * whether it was invoked as part of a `new` expression or by `call` or `apply`.
7 *
8 * @private
9 * @param {Function} Ctor The constructor to wrap.
10 * @returns {Function} Returns the new wrapped function.
11 */
12function createCtor(Ctor) {
13  return function() {
14    // Use a `switch` statement to work with class constructors. See
15    // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
16    // for more details.
17    var args = arguments;
18    switch (args.length) {
19      case 0: return new Ctor;
20      case 1: return new Ctor(args[0]);
21      case 2: return new Ctor(args[0], args[1]);
22      case 3: return new Ctor(args[0], args[1], args[2]);
23      case 4: return new Ctor(args[0], args[1], args[2], args[3]);
24      case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
25      case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
26      case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
27    }
28    var thisBinding = baseCreate(Ctor.prototype),
29        result = Ctor.apply(thisBinding, args);
30
31    // Mimic the constructor's `return` behavior.
32    // See https://es5.github.io/#x13.2.2 for more details.
33    return isObject(result) ? result : thisBinding;
34  };
35}
36
37module.exports = createCtor;
38