refactor: remove arg from usePollingValue

__tests__/usePollingValue.js

@@ -24,18 +24,3 @@ test('usePollingValue returns an update callback', () => {
   const [value] = result.current;
   expect(value).toBe(1);
 });
-
-test('usePollingValue calls its function with given argument', () => {
-  const fn = jest.fn();
-
-  const { result } = renderHook(() => usePollingValue(fn, 1));
-  const [, update] = result.current;
-
-  expect(fn.mock.calls.length).toBe(1);
-  expect(fn.mock.calls[0]).toEqual([1]);
-
-  act(() => update(2));
-
-  expect(fn.mock.calls.length).toBe(2);
-  expect(fn.mock.calls[1]).toEqual([2]);
-});

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@fpc/hooks",
   "description": "Useful hooks for react apps",
-  "version": "0.0.9",
+  "version": "0.0.10",
   "author": "Emiliano Bovetti <emiliano.bovetti@gmail.com>",
   "license": "GPL-3.0",
   "keywords": [

src/usePollingValue.js

@@ -1,14 +1,14 @@
 import { useRef, useReducer } from 'react';
 import { expectFunction } from '@fpc/types';
 
-const poll = ({ ref, arg }) => ({ value: ref.current.call(null, arg), ref });
-const reducer = ({ ref }, arg) => poll({ ref, arg });
+const evaluate = ref => ({ value: ref.current.call(null), ref });
+const reducer = ({ ref }) => evaluate(ref);
 
-export const usePollingValue = (fn, arg) => {
+export const usePollingValue = fn => {
   const ref = useRef();
   ref.current = expectFunction(fn);
 
-  const [state, update] = useReducer(reducer, { ref, arg }, poll);
+  const [state, update] = useReducer(reducer, ref, evaluate);
 
   return [state.value, update];
 };