fixed condition where multiple bad values would be filtered out and have nothing to return

Author: JoeCortopassi

src/compose.js

@@ -10,12 +10,12 @@
  */
 
 export default function compose(...funcs) {
+  funcs = funcs.filter(func => typeof func === 'function')
+
   if (funcs.length === 0) {
     return arg => arg
   }
 
-  funcs = funcs.filter(func => typeof func === 'function')
-
   if (funcs.length === 1) {
     return funcs[0]
   }

test/compose.spec.js

@@ -41,6 +41,7 @@ describe('Utils', () => {
     it('returns the first given argument if given no functions', () => {
       expect(compose()(1, 2)).toBe(1)
       expect(compose()(3)).toBe(3)
+      expect(compose(false,4,"test")(3)).toBe(3)
       expect(compose()()).toBe(undefined)
     })