EduVencovsky

import React, { useState, useEffect } from 'react'
import PropTypes from 'prop-types'
import { checkIsAuthenticated, authSignUp, authLogin, authLogout } from '../../services/auth'

export const AuthContext = React.createContext({})

export default function Auth({ children }) {

    const [isAuthenticated, setIsAuthenticated] = useState(false)
    const [isLoading, setIsLoading] = useState(true)

EduVencovsky

import { useState, useEffect } from 'react'
import AsyncStorage from '@react-native-community/async-storage'

const useAsyncStorage = (key, initialValue) => {
    const [hasLoad, setHasLoad] = useState(false)
    const [data, setData] = useState(initialValue)

    const set = async newData => {
        setData(newData)
        return newData === null ?

EduVencovsky

import { useState, useEffect } from 'react'
import { Dimensions } from 'react-native'

const useDimensions = getter => {
    const [dimensions, setDimensions] = useState(Dimensions.get(getter))
    useEffect(() => {
        const widthHandler = d => setDimensions(d[getter])
        Dimensions.addEventListener('change', widthHandler)
        return () => Dimensions.removeEventListener('change', widthHandler)
    })

EduVencovsky

using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Reflection;

namespace ADD_YOUR_NAME_SPACE_HERE
{
    public static class CustomAttributeHelper
    {        
        public static MemberInfo GetExpressionMember<T>(Expression<Func<T>> accessor)

EduVencovsky

import React, { useState } from 'react'
import { TextField, IconButton } from '@material-ui/core'
import AddIcon from '@material-ui/icons/Add'
import DeleteIcon from '@material-ui/icons/Delete'

interface TodoItem {
  id: number
  value: string
}

EduVencovsky

EduVencovsky

import React, { useEffect, useState } from 'react'
import PropTypes from 'prop-types'
import { Animated, Easing } from 'react-native'

const RotateView = ({ rotate, degree, initialDegree, duration, children, ...otherProps }) => {

    const [rotateValue] = useState(new Animated.Value(0))

    useEffect(() => {
        const toValue = rotate ? 1 : 0

EduVencovsky

import { useState, useEffect, useRef } from 'react'

export const useNavigationFocusChanged = (navigation, event) => {
    const [focus, setFocus] = useState(false)
    const listener = useRef(null)
    useEffect(() => {
        const changeFocus = () => {
            setFocus(prev => !prev)
        }
        listener.current = navigation.addListener(event, changeFocus)

EduVencovsky

<button id="open">open</button>
<div class="box scale">
  <h1>
  hey
  </h1>
</div>

EduVencovsky

import { useState } from 'react'

export default function useToggle(defaultValue){
    const [state, setState] = useState(defaultValue)
    
    const toggle = (value = null) => {
        if(value == null) 
            setState(!state)
        else 
            setState(!!value)