diff --git a/package.json b/package.json
index d99aedbf..fe129c45 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "lint": "eslint {src,tests}/**/*.{ts,tsx}",
     "lint:fix": "yarn lint --fix",
     "lint:types": "tsc --noEmit",
+    "lint:prettier":"yarn prettier --write src/**/**/*.{ts,tsx}",
     "build:cjs": "tsc",
     "build:es": "tsc -m esNext --outDir esm",
     "build": "yarn build:cjs && yarn build:es",
@@ -148,8 +149,9 @@
     ]
   },
   "lint-staged": {
-    "src/**/*.{ts,tsx}": [
+    "src/**/**/*.{ts,tsx}": [
       "eslint --fix",
+      "prettier --write",
       "git add"
     ]
   },
diff --git a/src/createBreakpoint.ts b/src/createBreakpoint.ts
index 0c53ff9f..eee72085 100644
--- a/src/createBreakpoint.ts
+++ b/src/createBreakpoint.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import { useEffect, useState, useMemo } from 'react';
 
 const createBreakpoint = (
diff --git a/src/createGlobalState.ts b/src/createGlobalState.ts
index fe0fd8bf..cb76af8a 100644
--- a/src/createGlobalState.ts
+++ b/src/createGlobalState.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import { useState } from 'react';
 import useEffectOnce from './useEffectOnce';
 import useIsomorphicLayoutEffect from './useIsomorphicLayoutEffect';
@@ -8,7 +7,7 @@ export function createGlobalState<S = any>(initialState?: S) {
     state: initialState,
     setState(state: S) {
       store.state = state;
-      store.setters.forEach(setter => setter(store.state));
+      store.setters.forEach((setter) => setter(store.state));
     },
     setters: [],
   };
@@ -17,7 +16,7 @@ export function createGlobalState<S = any>(initialState?: S) {
     const [globalState, stateSetter] = useState<S | undefined>(store.state);
 
     useEffectOnce(() => () => {
-      store.setters = store.setters.filter(setter => setter !== stateSetter);
+      store.setters = store.setters.filter((setter) => setter !== stateSetter);
     });
 
     useIsomorphicLayoutEffect(() => {
diff --git a/src/createMemo.ts b/src/createMemo.ts
index b407d2ab..9b796877 100644
--- a/src/createMemo.ts
+++ b/src/createMemo.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import { useMemo } from 'react';
 
 const createMemo = <T extends (...args: any) => any>(fn: T) => (...args: Parameters<T>) =>
diff --git a/src/createReducer.ts b/src/createReducer.ts
index 50b8ec06..c53b9dd0 100644
--- a/src/createReducer.ts
+++ b/src/createReducer.ts
@@ -30,7 +30,7 @@ const createReducer = <Action, State>(...middlewares: Middleware<Action, State>[
     const [, setState] = useState(ref.current);
 
     const dispatch = useCallback(
-      action => {
+      (action) => {
         ref.current = reducer(ref.current, action);
         setState(ref.current);
         return action;
diff --git a/src/createRouter.ts b/src/createRouter.ts
index fbbe7b86..f2690e09 100644
--- a/src/createRouter.ts
+++ b/src/createRouter.ts
@@ -1,5 +1,4 @@
-/* eslint-disable */
-import * as React from 'react';
+import React from 'react';
 
 export interface RouterProviderProps {
   route: string;
@@ -14,7 +13,7 @@ const createRouter = () => {
 
   // not sure if this supposed to be unused, ignoring ts error for now
   // @ts-ignore
-  const Router: React.SFC<RouterProviderProps> = props => {
+  const Router: React.SFC<RouterProviderProps> = (props) => {
     const { route, fullRoute, parent, children } = props;
 
     if (process.env.NODE_ENV !== 'production') {
diff --git a/src/useAsyncFn.ts b/src/useAsyncFn.ts
index 0ec39a52..a58b4d11 100644
--- a/src/useAsyncFn.ts
+++ b/src/useAsyncFn.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import { DependencyList, useCallback, useState, useRef } from 'react';
 import useMountedState from './useMountedState';
 import { FnReturningPromise, PromiseType } from './util';
@@ -40,15 +39,15 @@ export default function useAsyncFn<T extends FnReturningPromise>(
 
   const callback = useCallback((...args: Parameters<T>): ReturnType<T> => {
     const callId = ++lastCallId.current;
-    set(prevState => ({ ...prevState, loading: true }));
+    set((prevState) => ({ ...prevState, loading: true }));
 
     return fn(...args).then(
-      value => {
+      (value) => {
         isMounted() && callId === lastCallId.current && set({ value, loading: false });
 
         return value;
       },
-      error => {
+      (error) => {
         isMounted() && callId === lastCallId.current && set({ error, loading: false });
 
         return error;
diff --git a/src/useAsyncRetry.ts b/src/useAsyncRetry.ts
index aa0a43d5..a51c18b0 100644
--- a/src/useAsyncRetry.ts
+++ b/src/useAsyncRetry.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import { DependencyList, useCallback, useState } from 'react';
 import useAsync, { AsyncState } from './useAsync';
 
@@ -20,7 +19,7 @@ const useAsyncRetry = <T>(fn: () => Promise<T>, deps: DependencyList = []) => {
       return;
     }
 
-    setAttempt(currentAttempt => currentAttempt + 1);
+    setAttempt((currentAttempt) => currentAttempt + 1);
   }, [...deps, stateLoading]);
 
   return { ...state, retry };
diff --git a/src/useBattery.ts b/src/useBattery.ts
index 53083efb..bdb4a2b0 100644
--- a/src/useBattery.ts
+++ b/src/useBattery.ts
@@ -1,9 +1,6 @@
-/* eslint-disable */
-import * as React from 'react';
+import { useState, useEffect } from 'react';
 import { off, on, isDeepEqual } from './util';
 
-const { useState, useEffect } = React;
-
 export interface BatteryState {
   charging: boolean;
   chargingTime: number;
diff --git a/src/useClickAway.ts b/src/useClickAway.ts
index 12794b9b..490b918f 100644
--- a/src/useClickAway.ts
+++ b/src/useClickAway.ts
@@ -13,7 +13,7 @@ const useClickAway = <E extends Event = Event>(
     savedCallback.current = onClickAway;
   }, [onClickAway]);
   useEffect(() => {
-    const handler = event => {
+    const handler = (event) => {
       const { current: el } = ref;
       el && !el.contains(event.target) && savedCallback.current(event);
     };
diff --git a/src/useCopyToClipboard.ts b/src/useCopyToClipboard.ts
index e39f9c6d..783ba0ef 100644
--- a/src/useCopyToClipboard.ts
+++ b/src/useCopyToClipboard.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import writeText from 'copy-to-clipboard';
 import { useCallback } from 'react';
 import useMountedState from './useMountedState';
@@ -18,7 +17,7 @@ const useCopyToClipboard = (): [CopyToClipboardState, (value: string) => void] =
     noUserInteraction: true,
   });
 
-  const copyToClipboard = useCallback(value => {
+  const copyToClipboard = useCallback((value) => {
     if (!isMounted()) {
       return;
     }
diff --git a/src/useCounter.ts b/src/useCounter.ts
index 227feca7..03c0ad36 100644
--- a/src/useCounter.ts
+++ b/src/useCounter.ts
@@ -1,4 +1,3 @@
-/* eslint-disable */
 import { useMemo } from 'react';
 import useGetSet from './useGetSet';
 import { HookState, InitialHookState, resolveHookState } from './util/resolveHookState';
diff --git a/src/useDrop.ts b/src/useDrop.ts
index 62ceda66..135594c1 100644
--- a/src/useDrop.ts
+++ b/src/useDrop.ts
@@ -1,7 +1,4 @@
-/* eslint-disable */
-import * as React from 'react';
-
-const { useState, useMemo, useCallback, useEffect } = React;
+import { useState, useMemo, useCallback, useEffect } from 'react';
 
 export interface DropAreaState {
   over: boolean;
@@ -50,12 +47,12 @@ const useDrop = (options: DropAreaOptions = {}, args = []): DropAreaState => {
   const process = useMemo(() => createProcess(options), [onFiles, onText, onUri]);
 
   useEffect(() => {
-    const onDragOver = event => {
+    const onDragOver = (event) => {
       event.preventDefault();
       setOver(true);
     };
 
-    const onDragEnter = event => {
+    const onDragEnter = (event) => {
       event.preventDefault();
       setOver(true);
     };
@@ -68,13 +65,13 @@ const useDrop = (options: DropAreaOptions = {}, args = []): DropAreaState => {
       setOver(false);
     };
 
-    const onDrop = event => {
+    const onDrop = (event) => {
       event.preventDefault();
       setOver(false);
       process(event.dataTransfer, event);
     };
 
-    const onPaste = event => {
+    const onPaste = (event) => {
       process(event.clipboardData, event);
     };
 
diff --git a/src/useDropArea.ts b/src/useDropArea.ts
index 6f816ec1..6586002b 100644
--- a/src/useDropArea.ts
+++ b/src/useDropArea.ts
@@ -41,7 +41,7 @@ const createProcess = (options: DropAreaOptions, mounted: boolean) => (dataTrans
   }
 
   if (dataTransfer.items && dataTransfer.items.length) {
-    dataTransfer.items[0].getAsString(text => {
+    dataTransfer.items[0].getAsString((text) => {
       if (mounted) {
         (options.onText || noop)(text, event);
       }
@@ -50,23 +50,23 @@ const createProcess = (options: DropAreaOptions, mounted: boolean) => (dataTrans
 };
 
 const createBond = (process, setOver): DropAreaBond => ({
-  onDragOver: event => {
+  onDragOver: (event) => {
     event.preventDefault();
   },
-  onDragEnter: event => {
+  onDragEnter: (event) => {
     event.preventDefault();
     setOver(true);
   },
   onDragLeave: () => {
     setOver(false);
   },
-  onDrop: event => {
+  onDrop: (event) => {
     event.preventDefault();
     event.persist();
     setOver(false);
     process(event.dataTransfer, event);
   },
-  onPaste: event => {
+  onPaste: (event) => {
     event.persist();
     process(event.clipboardData, event);
   },
diff --git a/src/useFullscreen.ts b/src/useFullscreen.ts
index 1826642c..cd380fbd 100644
--- a/src/useFullscreen.ts
+++ b/src/useFullscreen.ts
@@ -4,12 +4,11 @@ import screenfull from 'screenfull';
 import useIsomorphicLayoutEffect from './useIsomorphicLayoutEffect';
 
 export interface FullScreenOptions {
-  video?: RefObject<HTMLVideoElement & { webkitEnterFullscreen?: () => void; webkitExitFullscreen?: () => void; }>;
+  video?: RefObject<HTMLVideoElement & { webkitEnterFullscreen?: () => void; webkitExitFullscreen?: () => void }>;
   onClose?: (error?: Error) => void;
 }
 
-const noop = () => {
-};
+const noop = () => {};
 
 const useFullscreen = (ref: RefObject<Element>, on: boolean, options: FullScreenOptions = {}): boolean => {
   const { video, onClose = noop } = options;
@@ -62,8 +61,7 @@ const useFullscreen = (ref: RefObject<Element>, on: boolean, options: FullScreen
         try {
           screenfull.off('change', onChange);
           screenfull.exit();
-        } catch {
-        }
+        } catch {}
       } else if (video && video.current && video.current.webkitExitFullscreen) {
         video.current.removeEventListener('webkitendfullscreen', onWebkitEndFullscreen);
         video.current.webkitExitFullscreen();
diff --git a/src/useGeolocation.ts b/src/useGeolocation.ts
index 8c2c831c..70790849 100644
--- a/src/useGeolocation.ts
+++ b/src/useGeolocation.ts
@@ -45,7 +45,7 @@ const useGeolocation = (options?: PositionOptions): GeoLocationSensorState => {
     }
   };
   const onEventError = (error: PositionError) =>
-    mounted && setState(oldState => ({ ...oldState, loading: false, error }));
+    mounted && setState((oldState) => ({ ...oldState, loading: false, error }));
 
   useEffect(() => {
     navigator.geolocation.getCurrentPosition(onEvent, onEventError, options);
diff --git a/src/useHash.ts b/src/useHash.ts
index 34d5dd75..3d67bcc4 100644
--- a/src/useHash.ts
+++ b/src/useHash.ts
@@ -1,27 +1,33 @@
-import { useState, useCallback } from "react"
-import useLifecycles from "./useLifecycles"
+import { useState, useCallback } from 'react';
+import useLifecycles from './useLifecycles';
 
 /**
  * read and write url hash, response to url hash change
  */
 export const useHash = () => {
-  const [hash, setHash] = useState(() => window.location.hash)
+  const [hash, setHash] = useState(() => window.location.hash);
 
   const onHashChange = useCallback(() => {
-    setHash(window.location.hash)
-  }, [])
+    setHash(window.location.hash);
+  }, []);
 
-  useLifecycles(() => {
-    window.addEventListener('hashchange', onHashChange)
-  }, () => {
-    window.removeEventListener('hashchange', onHashChange)
-  })
-
-  const _setHash = useCallback((newHash: string) => {
-    if (newHash !== hash) {
-      window.location.hash = newHash
+  useLifecycles(
+    () => {
+      window.addEventListener('hashchange', onHashChange);
+    },
+    () => {
+      window.removeEventListener('hashchange', onHashChange);
     }
-  }, [hash])
+  );
 
-  return [hash, _setHash] as const
-}
\ No newline at end of file
+  const _setHash = useCallback(
+    (newHash: string) => {
+      if (newHash !== hash) {
+        window.location.hash = newHash;
+      }
+    },
+    [hash]
+  );
+
+  return [hash, _setHash] as const;
+};
diff --git a/src/useKey.ts b/src/useKey.ts
index 8affdad0..650888ea 100644
--- a/src/useKey.ts
+++ b/src/useKey.ts
@@ -26,7 +26,7 @@ const useKey = (key: KeyFilter, fn: Handler = noop, opts: UseKeyOptions = {}, de
   const { event = 'keydown', target, options } = opts;
   const useMemoHandler = useMemo(() => {
     const predicate: KeyPredicate = createKeyPredicate(key);
-    const handler: Handler = handlerEvent => {
+    const handler: Handler = (handlerEvent) => {
       if (predicate(handlerEvent)) {
         return fn(handlerEvent);
       }
diff --git a/src/useKeyPress.ts b/src/useKeyPress.ts
index 54b8273a..2f48e0fb 100644
--- a/src/useKeyPress.ts
+++ b/src/useKeyPress.ts
@@ -3,8 +3,8 @@ import useKey, { KeyFilter } from './useKey';
 
 const useKeyPress = (keyFilter: KeyFilter) => {
   const [state, set] = useState<[boolean, null | KeyboardEvent]>([false, null]);
-  useKey(keyFilter, event => set([true, event]), { event: 'keydown' }, [state]);
-  useKey(keyFilter, event => set([false, event]), { event: 'keyup' }, [state]);
+  useKey(keyFilter, (event) => set([true, event]), { event: 'keydown' }, [state]);
+  useKey(keyFilter, (event) => set([false, event]), { event: 'keyup' }, [state]);
   return state;
 };
 
diff --git a/src/useKeyboardJs.ts b/src/useKeyboardJs.ts
index b1651ee7..bdf13564 100644
--- a/src/useKeyboardJs.ts
+++ b/src/useKeyboardJs.ts
@@ -6,7 +6,7 @@ const useKeyboardJs = (combination: string | string[]) => {
   const [keyboardJs, setKeyboardJs] = useState<any>(null);
 
   useMount(() => {
-    import('keyboardjs').then(k => setKeyboardJs(k.default || k));
+    import('keyboardjs').then((k) => setKeyboardJs(k.default || k));
   });
 
   useEffect(() => {
@@ -14,8 +14,8 @@ const useKeyboardJs = (combination: string | string[]) => {
       return;
     }
 
-    const down = event => set([true, event]);
-    const up = event => set([false, event]);
+    const down = (event) => set([true, event]);
+    const up = (event) => set([false, event]);
     keyboardJs.bind(combination, down, up, true);
 
     return () => {
diff --git a/src/useLatest.ts b/src/useLatest.ts
index f7386758..cd4230d2 100644
--- a/src/useLatest.ts
+++ b/src/useLatest.ts
@@ -1,6 +1,6 @@
-import {useRef} from 'react';
+import { useRef } from 'react';
 
-const useLatest = <T>(value: T): {readonly current: T} => {
+const useLatest = <T>(value: T): { readonly current: T } => {
   const ref = useRef(value);
   ref.current = value;
   return ref;
diff --git a/src/useList.ts b/src/useList.ts
index c6d94bfe..818020d6 100644
--- a/src/useList.ts
+++ b/src/useList.ts
@@ -99,17 +99,17 @@ function useList<T>(initialList: InitialHookState<T[]> = []): [T[], ListActions<
       },
 
       update: (predicate: (a: T, b: T) => boolean, newItem: T) => {
-        actions.set((curr: T[]) => curr.map(item => (predicate(item, newItem) ? newItem : item)));
+        actions.set((curr: T[]) => curr.map((item) => (predicate(item, newItem) ? newItem : item)));
       },
 
       updateFirst: (predicate: (a: T, b: T) => boolean, newItem: T) => {
-        const index = list.current.findIndex(item => predicate(item, newItem));
+        const index = list.current.findIndex((item) => predicate(item, newItem));
 
         index >= 0 && actions.updateAt(index, newItem);
       },
 
       upsert: (predicate: (a: T, b: T) => boolean, newItem: T) => {
-        const index = list.current.findIndex(item => predicate(item, newItem));
+        const index = list.current.findIndex((item) => predicate(item, newItem));
 
         index >= 0 ? actions.updateAt(index, newItem) : actions.push(newItem);
       },
diff --git a/src/useLocalStorage.ts b/src/useLocalStorage.ts
index 2044e3f6..062ad36a 100644
--- a/src/useLocalStorage.ts
+++ b/src/useLocalStorage.ts
@@ -26,7 +26,7 @@ const useLocalStorage = <T>(
     throw new Error('useLocalStorage key may not be falsy');
   }
 
-  const deserializer = options ? (options.raw ? value => value : options.deserializer) : JSON.parse;
+  const deserializer = options ? (options.raw ? (value) => value : options.deserializer) : JSON.parse;
 
   const [state, setState] = useState<T | undefined>(() => {
     try {
@@ -48,7 +48,7 @@ const useLocalStorage = <T>(
   });
 
   const set: Dispatch<SetStateAction<T | undefined>> = useCallback(
-    valOrFunc => {
+    (valOrFunc) => {
       try {
         const newState = typeof valOrFunc === 'function' ? (valOrFunc as Function)(state) : valOrFunc;
         if (typeof newState === 'undefined') return;
diff --git a/src/useLocation.ts b/src/useLocation.ts
index c593a1d1..2a62692f 100644
--- a/src/useLocation.ts
+++ b/src/useLocation.ts
@@ -2,10 +2,10 @@
 import { useEffect, useState } from 'react';
 import { isClient, off, on } from './util';
 
-const patchHistoryMethod = method => {
+const patchHistoryMethod = (method) => {
   const original = history[method];
 
-  history[method] = function(state) {
+  history[method] = function (state) {
     const result = original.apply(this, arguments);
     const event = new Event(method.toLowerCase());
 
diff --git a/src/useLockBodyScroll.ts b/src/useLockBodyScroll.ts
index 60133297..f8fe9049 100644
--- a/src/useLockBodyScroll.ts
+++ b/src/useLockBodyScroll.ts
@@ -48,7 +48,7 @@ export default !doc
   : function useLockBody(locked: boolean = true, elementRef?: RefObject<HTMLElement>) {
       elementRef = elementRef || useRef(doc!.body);
 
-      const lock = body => {
+      const lock = (body) => {
         const bodyInfo = bodies.get(body);
         if (!bodyInfo) {
           bodies.set(body, { counter: 1, initialOverflow: body.style.overflow });
@@ -66,7 +66,7 @@ export default !doc
         }
       };
 
-      const unlock = body => {
+      const unlock = (body) => {
         const bodyInfo = bodies.get(body);
         if (bodyInfo) {
           if (bodyInfo.counter === 1) {
diff --git a/src/useMap.ts b/src/useMap.ts
index 90f2fb01..f6021e40 100644
--- a/src/useMap.ts
+++ b/src/useMap.ts
@@ -18,7 +18,7 @@ const useMap = <T extends object = any>(initialMap: T = {} as T): [T, Actions<T>
   const stableActions = useMemo<StableActions<T>>(
     () => ({
       set: (key, entry) => {
-        set(prevMap => ({
+        set((prevMap) => ({
           ...prevMap,
           [key]: entry,
         }));
@@ -26,8 +26,8 @@ const useMap = <T extends object = any>(initialMap: T = {} as T): [T, Actions<T>
       setAll: (newMap: T) => {
         set(newMap);
       },
-      remove: key => {
-        set(prevMap => {
+      remove: (key) => {
+        set((prevMap) => {
           const { [key]: omit, ...rest } = prevMap;
           return rest as T;
         });
@@ -38,7 +38,7 @@ const useMap = <T extends object = any>(initialMap: T = {} as T): [T, Actions<T>
   );
 
   const utils = {
-    get: useCallback(key => map[key], [map]),
+    get: useCallback((key) => map[key], [map]),
     ...stableActions,
   } as Actions<T>;
 
diff --git a/src/useMeasure.ts b/src/useMeasure.ts
index 04e801d8..bdfc3415 100644
--- a/src/useMeasure.ts
+++ b/src/useMeasure.ts
@@ -26,7 +26,7 @@ const useMeasure = <E extends HTMLElement = HTMLElement>(): UseMeasureResult<E>
 
   const observer = useMemo(
     () =>
-      new (window as any).ResizeObserver(entries => {
+      new (window as any).ResizeObserver((entries) => {
         if (entries[0]) {
           const { x, y, width, height, top, left, bottom, right } = entries[0].contentRect;
           setRect({ x, y, width, height, top, left, bottom, right });
@@ -48,4 +48,4 @@ const useMeasure = <E extends HTMLElement = HTMLElement>(): UseMeasureResult<E>
 
 const useMeasureMock: typeof useMeasure = () => [() => {}, defaultState];
 
-export default (isClient && !!(window as any).ResizeObserver) ? useMeasure : useMeasureMock;
+export default isClient && !!(window as any).ResizeObserver ? useMeasure : useMeasureMock;
diff --git a/src/useMeasureDirty.ts b/src/useMeasureDirty.ts
index 2bc4a82e..b884220b 100644
--- a/src/useMeasureDirty.ts
+++ b/src/useMeasureDirty.ts
@@ -24,7 +24,7 @@ const useMeasureDirty = (ref: RefObject<HTMLElement>): ContentRect => {
 
   const [observer] = useState(
     () =>
-      new ResizeObserver(entries => {
+      new ResizeObserver((entries) => {
         const entry = entries[0];
 
         if (entry) {
diff --git a/src/useMediaDevices.ts b/src/useMediaDevices.ts
index d9601274..6a43542e 100644
--- a/src/useMediaDevices.ts
+++ b/src/useMediaDevices.ts
@@ -12,7 +12,7 @@ const useMediaDevices = () => {
     const onChange = () => {
       navigator.mediaDevices
         .enumerateDevices()
-        .then(devices => {
+        .then((devices) => {
           if (mounted) {
             setState({
               devices: devices.map(({ deviceId, groupId, kind, label }) => ({ deviceId, groupId, kind, label })),
diff --git a/src/useMotion.ts b/src/useMotion.ts
index 29f1a1b1..e5bb836d 100644
--- a/src/useMotion.ts
+++ b/src/useMotion.ts
@@ -43,7 +43,7 @@ const useMotion = (initialState: MotionSensorState = defaultState) => {
   const [state, setState] = useState(initialState);
 
   useEffect(() => {
-    const handler = event => {
+    const handler = (event) => {
       const { acceleration, accelerationIncludingGravity, rotationRate, interval } = event;
 
       setState({
diff --git a/src/useMouseWheel.ts b/src/useMouseWheel.ts
index f8793e05..7159e4ad 100644
--- a/src/useMouseWheel.ts
+++ b/src/useMouseWheel.ts
@@ -1,14 +1,13 @@
-import {useEffect, useState} from 'react'
+import { useEffect, useState } from 'react';
 
 export default () => {
-    const [mouseWheelScrolled, setMouseWheelScrolled] = useState(0)
-    useEffect(()=>{
-        const updateScroll = (e : MouseWheelEvent) => {
-            setMouseWheelScrolled(e.deltaY + mouseWheelScrolled)
-        }
-        window.addEventListener('wheel', updateScroll, false)
-        return () => window.removeEventListener('wheel', updateScroll)
-    })
-    return mouseWheelScrolled
-}
-
+  const [mouseWheelScrolled, setMouseWheelScrolled] = useState(0);
+  useEffect(() => {
+    const updateScroll = (e: MouseWheelEvent) => {
+      setMouseWheelScrolled(e.deltaY + mouseWheelScrolled);
+    };
+    window.addEventListener('wheel', updateScroll, false);
+    return () => window.removeEventListener('wheel', updateScroll);
+  });
+  return mouseWheelScrolled;
+};
diff --git a/src/useNetwork.ts b/src/useNetwork.ts
index 4a66a205..5693f1e8 100644
--- a/src/useNetwork.ts
+++ b/src/useNetwork.ts
@@ -40,7 +40,7 @@ const useNetwork = (initialState: NetworkState = {}) => {
 
   useEffect(() => {
     let localState = state;
-    const localSetState = patch => {
+    const localSetState = (patch) => {
       localState = { ...localState, ...patch };
       setState(localState);
     };
diff --git a/src/usePageLeave.ts b/src/usePageLeave.ts
index 948b3204..c2f921d1 100644
--- a/src/usePageLeave.ts
+++ b/src/usePageLeave.ts
@@ -7,7 +7,7 @@ const usePageLeave = (onPageLeave, args = []) => {
       return;
     }
 
-    const handler = event => {
+    const handler = (event) => {
       event = event ? event : (window.event as any);
       const from = event.relatedTarget || event.toElement;
       if (!from || (from as any).nodeName === 'HTML') {
diff --git a/src/usePermission.ts b/src/usePermission.ts
index 86e99ca7..7ddd3110 100644
--- a/src/usePermission.ts
+++ b/src/usePermission.ts
@@ -32,7 +32,7 @@ const usePermission = (permissionDesc: PermissionDesc): State => {
   useEffect(() => {
     navigator.permissions
       .query(permissionDesc)
-      .then(status => {
+      .then((status) => {
         permissionStatus = status;
         changeState();
       })
diff --git a/src/usePrevious.ts b/src/usePrevious.ts
index 89d194c4..a5233144 100644
--- a/src/usePrevious.ts
+++ b/src/usePrevious.ts
@@ -4,7 +4,7 @@ export default function usePrevious<T>(state: T): T | undefined {
   const ref = useRef<T>();
 
   useEffect(() => {
-    ref.current = state
+    ref.current = state;
   });
 
   return ref.current;
diff --git a/src/usePromise.ts b/src/usePromise.ts
index d1aa5c56..1a3ebdc2 100644
--- a/src/usePromise.ts
+++ b/src/usePromise.ts
@@ -9,10 +9,10 @@ const usePromise: UsePromise = () => {
   return useCallback(
     (promise: Promise<any>) =>
       new Promise<any>((resolve, reject) => {
-        const onValue = value => {
+        const onValue = (value) => {
           isMounted() && resolve(value);
         };
-        const onError = error => {
+        const onError = (error) => {
           isMounted() && reject(error);
         };
         promise.then(onValue, onError);
diff --git a/src/useQueue.ts b/src/useQueue.ts
index 97a8372d..e0299aef 100644
--- a/src/useQueue.ts
+++ b/src/useQueue.ts
@@ -11,8 +11,8 @@ export interface QueueMethods<T> {
 const useQueue = <T>(initialValue: T[] = []): QueueMethods<T> => {
   const [state, set] = useState(initialValue);
   return {
-    add: value => {
-      set(queue => [...queue, value]);
+    add: (value) => {
+      set((queue) => [...queue, value]);
     },
     remove: () => {
       let result;
diff --git a/src/useRafLoop.ts b/src/useRafLoop.ts
index 444d4ee1..5f5b667c 100644
--- a/src/useRafLoop.ts
+++ b/src/useRafLoop.ts
@@ -15,22 +15,28 @@ export default function useRafLoop(callback: FrameRequestCallback, initiallyActi
     }
   }, []);
 
-  const result = useMemo(() => ([
-    () => { // stop
-      if (rafActivity.current) {
-        rafActivity.current = false;
-        raf.current && cancelAnimationFrame(raf.current);
-      }
-    },
-    () => { // start
-      if (!rafActivity.current) {
-        rafActivity.current = true;
-        raf.current = requestAnimationFrame(step);
-      }
-    },
-    (): boolean => rafActivity.current  // isActive
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  ] as RafLoopReturns), []);
+  const result = useMemo(
+    () =>
+      [
+        () => {
+          // stop
+          if (rafActivity.current) {
+            rafActivity.current = false;
+            raf.current && cancelAnimationFrame(raf.current);
+          }
+        },
+        () => {
+          // start
+          if (!rafActivity.current) {
+            rafActivity.current = true;
+            raf.current = requestAnimationFrame(step);
+          }
+        },
+        (): boolean => rafActivity.current, // isActive
+        // eslint-disable-next-line react-hooks/exhaustive-deps
+      ] as RafLoopReturns,
+    []
+  );
 
   useEffect(() => {
     if (initiallyActive) {
diff --git a/src/useScratch.ts b/src/useScratch.ts
index 6703d348..f88a15cc 100644
--- a/src/useScratch.ts
+++ b/src/useScratch.ts
@@ -30,7 +30,7 @@ export interface ScratchSensorState {
 }
 
 const useScratch = (params: ScratchSensorParams = {}): [(el: HTMLElement | null) => void, ScratchSensorState] => {
-  const {disabled} = params;
+  const { disabled } = params;
   const paramsRef = useLatest(params);
   const [state, setState] = useState<ScratchSensorState>({ isScratching: false });
   const refState = useRef<ScratchSensorState>(state);
@@ -49,7 +49,7 @@ const useScratch = (params: ScratchSensorParams = {}): [(el: HTMLElement | null)
         const elY = top + window.scrollY;
         const x = docX - elX;
         const y = docY - elY;
-        setState(oldState => {
+        setState((oldState) => {
           const newState = {
             ...oldState,
             dx: x - (oldState.x || 0),
@@ -64,11 +64,11 @@ const useScratch = (params: ScratchSensorParams = {}): [(el: HTMLElement | null)
       });
     };
 
-    const onMouseMove = event => {
+    const onMouseMove = (event) => {
       onMoveEvent(event.pageX, event.pageY);
     };
 
-    const onTouchMove = event => {
+    const onTouchMove = (event) => {
       onMoveEvent(event.changedTouches[0].pageX, event.changedTouches[0].pageY);
     };
 
@@ -122,12 +122,12 @@ const useScratch = (params: ScratchSensorParams = {}): [(el: HTMLElement | null)
       window.addEventListener('touchend', onTouchEnd);
     };
 
-    const onMouseDown = event => {
+    const onMouseDown = (event) => {
       refScratching.current = true;
       startScratching(event.pageX, event.pageY);
     };
 
-    const onTouchStart = event => {
+    const onTouchStart = (event) => {
       refScratching.current = true;
       startScratching(event.changedTouches[0].pageX, event.changedTouches[0].pageY);
     };
@@ -159,13 +159,13 @@ export interface ScratchSensorProps extends ScratchSensorParams {
   children: (state: ScratchSensorState, ref: (el: HTMLElement | null) => void) => React.ReactElement<any>;
 }
 
-export const ScratchSensor: FC<ScratchSensorProps> = props => {
+export const ScratchSensor: FC<ScratchSensorProps> = (props) => {
   const { children, ...params } = props;
   const [ref, state] = useScratch(params);
   const element = render(props, state);
   return cloneElement(element, {
     ...element.props,
-    ref: el => {
+    ref: (el) => {
       if (element.props.ref) {
         if (typeof element.props.ref === 'object') element.props.ref.current = el;
         if (typeof element.props.ref === 'function') element.props.ref(el);
diff --git a/src/useSearchParam.ts b/src/useSearchParam.ts
index eae57813..4f893c37 100644
--- a/src/useSearchParam.ts
+++ b/src/useSearchParam.ts
@@ -5,7 +5,7 @@ const getValue = (search: string, param: string) => new URLSearchParams(search).
 
 export type UseQueryParam = (param: string) => string | null;
 
-const useSearchParam: UseQueryParam = param => {
+const useSearchParam: UseQueryParam = (param) => {
   const [value, setValue] = useState<string | null>(() => getValue(location.search, param));
 
   useEffect(() => {
diff --git a/src/useSet.ts b/src/useSet.ts
index 4ceca005..1cd87cad 100644
--- a/src/useSet.ts
+++ b/src/useSet.ts
@@ -16,12 +16,12 @@ const useSet = <K>(initialSet = new Set<K>()): [Set<K>, Actions<K>] => {
   const [set, setSet] = useState(initialSet);
 
   const stableActions = useMemo<StableActions<K>>(() => {
-    const add = (item: K) => setSet(prevSet => new Set([...Array.from(prevSet), item]));
-    const remove = (item: K) => setSet(prevSet => new Set(Array.from(prevSet).filter(i => i !== item)));
+    const add = (item: K) => setSet((prevSet) => new Set([...Array.from(prevSet), item]));
+    const remove = (item: K) => setSet((prevSet) => new Set(Array.from(prevSet).filter((i) => i !== item)));
     const toggle = (item: K) =>
-      setSet(prevSet =>
+      setSet((prevSet) =>
         prevSet.has(item)
-          ? new Set(Array.from(prevSet).filter(i => i !== item))
+          ? new Set(Array.from(prevSet).filter((i) => i !== item))
           : new Set([...Array.from(prevSet), item])
       );
 
@@ -29,7 +29,7 @@ const useSet = <K>(initialSet = new Set<K>()): [Set<K>, Actions<K>] => {
   }, [setSet]);
 
   const utils = {
-    has: useCallback(item => set.has(item), [set]),
+    has: useCallback((item) => set.has(item), [set]),
     ...stableActions,
   } as Actions<K>;
 
diff --git a/src/useSetState.ts b/src/useSetState.ts
index 41b88e6a..d589f46a 100644
--- a/src/useSetState.ts
+++ b/src/useSetState.ts
@@ -5,8 +5,8 @@ const useSetState = <T extends object>(
 ): [T, (patch: Partial<T> | ((prevState: T) => Partial<T>)) => void] => {
   const [state, set] = useState<T>(initialState);
   const setState = useCallback(
-    patch => {
-      set(prevState => Object.assign({}, prevState, patch instanceof Function ? patch(prevState) : patch));
+    (patch) => {
+      set((prevState) => Object.assign({}, prevState, patch instanceof Function ? patch(prevState) : patch));
     },
     [set]
   );
diff --git a/src/useSpring.ts b/src/useSpring.ts
index ddbb26f3..d08e727e 100644
--- a/src/useSpring.ts
+++ b/src/useSpring.ts
@@ -10,7 +10,7 @@ const useSpring = (targetValue: number = 0, tension: number = 50, friction: numb
   // listener fn will be different on each re-render and wouldn't unsubscribe properly.
   const listener = useMemo(
     () => ({
-      onSpringUpdate: currentSpring => {
+      onSpringUpdate: (currentSpring) => {
         const newValue = currentSpring.getCurrentValue();
         setValue(newValue);
       },
diff --git a/src/useStartTyping.ts b/src/useStartTyping.ts
index 3669102f..c77834be 100644
--- a/src/useStartTyping.ts
+++ b/src/useStartTyping.ts
@@ -42,7 +42,7 @@ const isTypedCharGood = ({ keyCode, metaKey, ctrlKey, altKey }: KeyboardEvent) =
 
 const useStartTyping = (onStartTyping: (event: KeyboardEvent) => void) => {
   useIsomorphicLayoutEffect(() => {
-    const keydown = event => {
+    const keydown = (event) => {
       !isFocusedElementEditable() && isTypedCharGood(event) && onStartTyping(event);
     };
 
diff --git a/src/useStateWithHistory.ts b/src/useStateWithHistory.ts
index 4dd029b8..fd25ace0 100644
--- a/src/useStateWithHistory.ts
+++ b/src/useStateWithHistory.ts
@@ -57,7 +57,7 @@ export function useStateWithHistory<S, I extends S>(
 
   const setState = useCallback(
     (newState: ResolvableHookState<S>): void => {
-      innerSetState(currentState => {
+      innerSetState((currentState) => {
         newState = resolveHookState(newState);
 
         // is state has changed
diff --git a/src/useUnmountPromise.ts b/src/useUnmountPromise.ts
index 3c3d3801..cb561a2d 100644
--- a/src/useUnmountPromise.ts
+++ b/src/useUnmountPromise.ts
@@ -12,10 +12,10 @@ const useUnmountPromise = (): Race => {
     const race = <P extends Promise<any>, E>(promise: P, onError?: (error: E) => void) => {
       const newPromise: P = new Promise((resolve, reject) => {
         promise.then(
-          result => {
+          (result) => {
             if (!refUnmounted.current) resolve(result);
           },
-          error => {
+          (error) => {
             if (!refUnmounted.current) reject(error);
             else if (onError) onError(error);
             else console.error('useUnmountPromise', error);
diff --git a/src/util/createHTMLMediaHook.ts b/src/util/createHTMLMediaHook.ts
index b72ea1f8..43ef3e70 100644
--- a/src/util/createHTMLMediaHook.ts
+++ b/src/util/createHTMLMediaHook.ts
@@ -51,7 +51,7 @@ const createHTMLMediaHook = (tag: 'audio' | 'video') => {
     const ref = useRef<HTMLAudioElement | null>(null);
 
     const wrapEvent = (userEvent, proxyEvent?) => {
-      return event => {
+      return (event) => {
         try {
           proxyEvent && proxyEvent(event);
         } finally {
diff --git a/src/util/createRenderProp.ts b/src/util/createRenderProp.ts
index 8a6fb6f1..31767a7e 100644
--- a/src/util/createRenderProp.ts
+++ b/src/util/createRenderProp.ts
@@ -1,7 +1,7 @@
-const defaultMapPropsToArgs = props => [props];
+const defaultMapPropsToArgs = (props) => [props];
 
 const createRenderProp = (hook, mapPropsToArgs = defaultMapPropsToArgs) => {
-  const RenderProp = props => {
+  const RenderProp = (props) => {
     const state = hook(...mapPropsToArgs(props));
     const { children, render = children } = props;
     return render ? render(state) || null : null;
diff --git a/src/util/parseTimeRanges.ts b/src/util/parseTimeRanges.ts
index 1348024c..873a2d02 100644
--- a/src/util/parseTimeRanges.ts
+++ b/src/util/parseTimeRanges.ts
@@ -1,4 +1,4 @@
-const parseTimeRanges = ranges => {
+const parseTimeRanges = (ranges) => {
   const result: { start: number; end: number }[] = [];
 
   for (let i = 0; i < ranges.length; i++) {