Simplify functions.

.internal/baseFunctions.js

@@ -1,17 +0,0 @@
-import arrayFilter from './arrayFilter.js'
-import isFunction from '../isFunction.js'
-
-/**
- * The base implementation of `functions` which creates an array of
- * `object` function property names filtered from `props`.
- *
- * @private
- * @param {Object} object The object to inspect.
- * @param {Array} props The property names to filter.
- * @returns {Array} Returns the function names.
- */
-function baseFunctions(object, props) {
-  return arrayFilter(props, key => isFunction(object[key]))
-}
-
-export default baseFunctions

functions.js

@@ -1,4 +1,4 @@
-import baseFunctions from './.internal/baseFunctions.js'
+import arrayFilter from './arrayFilter.js'
 import keys from './keys.js'
 
 /**
@@ -23,7 +23,9 @@ import keys from './keys.js'
  * // => ['a', 'b']
  */
 function functions(object) {
-  return object == null ? [] : baseFunctions(object, keys(object))
+  return object == null
+    ? []
+    : arrayFilter(keys(object), key => typeof object[key] == 'function')
 }
 
 export default functions