mboettcher

import { useEffect, useState } from 'react';
import { NavigationParams, NavigationRoute, NavigationScreenProp } from 'react-navigation';

export const useIsScreenFocused = (navigation: NavigationScreenProp<NavigationRoute<NavigationParams>, NavigationParams>) => {
  const [isFocused, setIsFocused] = useState(true);
  useEffect(() => {
    const focusListener = navigation.addListener('didFocus', () => {
      setIsFocused(true);
    });
    const blurListener = navigation.addListener('didBlur', () => {

mboettcher

import { useEffect } from 'react';
import { NavigationParams, NavigationRoute, NavigationScreenProp } from 'react-navigation';

export const useFocusEventRefresh = (
	navigation: NavigationScreenProp<
		NavigationRoute<NavigationParams>,
		NavigationParams
	>,
	refetch: () => Promise<any>,
) => {

mboettcher

import { useState, useEffect } from 'react';

const defaultSettings: PositionOptions = {
  enableHighAccuracy: false,
  timeout: Infinity,
  maximumAge: 0,
};

export const usePosition = (watch = false, settings = defaultSettings): {position: Position, error: string} => {

mboettcher

import { useEffect, useRef } from 'react';

export function useIsMountedRef() {
	const isMountedRef = useRef(false);
	useEffect(() => {
		isMountedRef.current = true;
		return () => {
			isMountedRef.current = false;
		};
	}, []);

mboettcher

Keybase proof

I hereby claim:

• I am mboettcher on github.
• I am martinboettcher (https://keybase.io/martinboettcher) on keybase.
• I have a public key ASCaWAVdggTuCXuY75qwhdCdBzOnn7D4q989f1uFmu9KMwo

To claim this, I am signing this object: