diff --git a/.internal/createCtor.js b/.internal/createCtor.js
deleted file mode 100644
index c32c0a279..000000000
--- a/.internal/createCtor.js
+++ /dev/null
@@ -1,36 +0,0 @@
-import isObject from '../isObject.js'
-
-/**
- * Creates a function that produces an instance of `Ctor` regardless of
- * whether it was invoked as part of a `new` expression or by `call` or `apply`.
- *
- * @private
- * @param {Function} Ctor The constructor to wrap.
- * @returns {Function} Returns the new wrapped function.
- */
-function createCtor(Ctor) {
-  return function(...args) {
-    // Use a `switch` statement to work with class constructors. See
-    // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
-    // for more details.
-    switch (args.length) {
-      case 0: return new Ctor
-      case 1: return new Ctor(args[0])
-      case 2: return new Ctor(args[0], args[1])
-      case 3: return new Ctor(args[0], args[1], args[2])
-      case 4: return new Ctor(args[0], args[1], args[2], args[3])
-      case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4])
-      case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5])
-      case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6])
-    }
-    const proto = Ctor.prototype
-    const thisBinding = proto == null ? {} : Object.create(Object(proto))
-    const result = Ctor.apply(thisBinding, args)
-
-    // Mimic the constructor's `return` behavior.
-    // See https://es5.github.io/#x13.2.2 for more details.
-    return isObject(result) ? result : thisBinding
-  }
-}
-
-export default createCtor