initial format deconstructed
This commit is contained in:
40
src/App.css
40
src/App.css
@@ -1,39 +1,5 @@
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.App {
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text-align: center;
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}
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.App-logo {
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height: 40vmin;
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pointer-events: none;
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}
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@media (prefers-reduced-motion: no-preference) {
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.App-logo {
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animation: App-logo-float infinite 3s ease-in-out;
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}
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}
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.App-header {
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min-height: 100vh;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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font-size: calc(10px + 2vmin);
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}
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.App-link {
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color: rgb(112, 76, 182);
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}
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@keyframes App-logo-float {
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0% {
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transform: translateY(0);
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}
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50% {
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transform: translateY(10px);
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}
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100% {
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transform: translateY(0px);
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}
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}
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margin: 0;
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padding: 0;
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}
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50
src/App.js
50
src/App.js
@@ -1,58 +1,12 @@
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import React from 'react';
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import logo from './logo.svg';
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import { Counter } from './features/counter/Counter';
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import './App.css';
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function App() {
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return (
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<div className="App">
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<header className="App-header">
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<img src={logo} className="App-logo" alt="logo" />
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<Counter />
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<p>
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Edit <code>src/App.js</code> and save to reload.
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</p>
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<span>
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<span>Learn </span>
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<a
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className="App-link"
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href="https://reactjs.org/"
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target="_blank"
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rel="noopener noreferrer"
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>
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React
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</a>
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<span>, </span>
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<a
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className="App-link"
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href="https://redux.js.org/"
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target="_blank"
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rel="noopener noreferrer"
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>
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Redux
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</a>
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<span>, </span>
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<a
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className="App-link"
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href="https://redux-toolkit.js.org/"
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target="_blank"
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rel="noopener noreferrer"
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>
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Redux Toolkit
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</a>
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,<span> and </span>
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<a
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className="App-link"
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href="https://react-redux.js.org/"
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target="_blank"
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rel="noopener noreferrer"
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>
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React Redux
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</a>
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</span>
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</header>
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<p>Stuff</p>
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</div>
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);
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}
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export default App;
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export default App;
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@@ -1,8 +1,7 @@
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import { configureStore } from '@reduxjs/toolkit';
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import counterReducer from '../features/counter/counterSlice';
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export const store = configureStore({
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reducer: {
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counter: counterReducer,
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// reducers for app here
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},
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});
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@@ -1,67 +0,0 @@
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import React, { useState } from 'react';
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import { useSelector, useDispatch } from 'react-redux';
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import {
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decrement,
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increment,
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incrementByAmount,
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incrementAsync,
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incrementIfOdd,
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selectCount,
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} from './counterSlice';
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import styles from './Counter.module.css';
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export function Counter() {
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const count = useSelector(selectCount);
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const dispatch = useDispatch();
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const [incrementAmount, setIncrementAmount] = useState('2');
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const incrementValue = Number(incrementAmount) || 0;
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return (
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<div>
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<div className={styles.row}>
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<button
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className={styles.button}
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aria-label="Decrement value"
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onClick={() => dispatch(decrement())}
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>
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-
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</button>
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<span className={styles.value}>{count}</span>
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<button
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className={styles.button}
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aria-label="Increment value"
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onClick={() => dispatch(increment())}
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>
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+
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</button>
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</div>
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<div className={styles.row}>
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<input
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className={styles.textbox}
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aria-label="Set increment amount"
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value={incrementAmount}
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onChange={(e) => setIncrementAmount(e.target.value)}
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/>
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<button
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className={styles.button}
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onClick={() => dispatch(incrementByAmount(incrementValue))}
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>
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Add Amount
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</button>
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<button
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className={styles.asyncButton}
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onClick={() => dispatch(incrementAsync(incrementValue))}
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>
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Add Async
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</button>
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<button
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className={styles.button}
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onClick={() => dispatch(incrementIfOdd(incrementValue))}
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>
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Add If Odd
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</button>
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</div>
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</div>
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);
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}
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@@ -1,78 +0,0 @@
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.row {
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.row > button {
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margin-left: 4px;
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margin-right: 8px;
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}
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.row:not(:last-child) {
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margin-bottom: 16px;
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}
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.value {
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font-size: 78px;
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padding-left: 16px;
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padding-right: 16px;
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margin-top: 2px;
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font-family: 'Courier New', Courier, monospace;
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}
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.button {
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appearance: none;
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background: none;
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font-size: 32px;
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padding-left: 12px;
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padding-right: 12px;
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outline: none;
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border: 2px solid transparent;
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color: rgb(112, 76, 182);
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padding-bottom: 4px;
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cursor: pointer;
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background-color: rgba(112, 76, 182, 0.1);
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border-radius: 2px;
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transition: all 0.15s;
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}
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.textbox {
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font-size: 32px;
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padding: 2px;
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width: 64px;
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text-align: center;
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margin-right: 4px;
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}
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.button:hover,
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.button:focus {
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border: 2px solid rgba(112, 76, 182, 0.4);
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}
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.button:active {
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background-color: rgba(112, 76, 182, 0.2);
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}
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.asyncButton {
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composes: button;
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position: relative;
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}
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.asyncButton:after {
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content: '';
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background-color: rgba(112, 76, 182, 0.15);
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display: block;
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position: absolute;
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width: 100%;
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height: 100%;
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left: 0;
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top: 0;
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opacity: 0;
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transition: width 1s linear, opacity 0.5s ease 1s;
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}
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.asyncButton:active:after {
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width: 0%;
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opacity: 1;
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transition: 0s;
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}
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@@ -1,6 +0,0 @@
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// A mock function to mimic making an async request for data
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export function fetchCount(amount = 1) {
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return new Promise((resolve) =>
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setTimeout(() => resolve({ data: amount }), 500)
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);
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}
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@@ -1,73 +0,0 @@
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import { createAsyncThunk, createSlice } from '@reduxjs/toolkit';
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import { fetchCount } from './counterAPI';
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const initialState = {
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value: 0,
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status: 'idle',
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};
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// The function below is called a thunk and allows us to perform async logic. It
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// can be dispatched like a regular action: `dispatch(incrementAsync(10))`. This
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// will call the thunk with the `dispatch` function as the first argument. Async
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// code can then be executed and other actions can be dispatched. Thunks are
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// typically used to make async requests.
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export const incrementAsync = createAsyncThunk(
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'counter/fetchCount',
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async (amount) => {
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const response = await fetchCount(amount);
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// The value we return becomes the `fulfilled` action payload
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return response.data;
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}
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);
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export const counterSlice = createSlice({
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name: 'counter',
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initialState,
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// The `reducers` field lets us define reducers and generate associated actions
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reducers: {
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increment: (state) => {
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// Redux Toolkit allows us to write "mutating" logic in reducers. It
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// doesn't actually mutate the state because it uses the Immer library,
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// which detects changes to a "draft state" and produces a brand new
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// immutable state based off those changes
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state.value += 1;
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},
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decrement: (state) => {
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state.value -= 1;
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},
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// Use the PayloadAction type to declare the contents of `action.payload`
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incrementByAmount: (state, action) => {
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state.value += action.payload;
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},
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},
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// The `extraReducers` field lets the slice handle actions defined elsewhere,
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// including actions generated by createAsyncThunk or in other slices.
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extraReducers: (builder) => {
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builder
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.addCase(incrementAsync.pending, (state) => {
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state.status = 'loading';
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})
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.addCase(incrementAsync.fulfilled, (state, action) => {
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state.status = 'idle';
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state.value += action.payload;
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});
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},
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});
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export const { increment, decrement, incrementByAmount } = counterSlice.actions;
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// The function below is called a selector and allows us to select a value from
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// the state. Selectors can also be defined inline where they're used instead of
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// in the slice file. For example: `useSelector((state: RootState) => state.counter.value)`
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export const selectCount = (state) => state.counter.value;
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// We can also write thunks by hand, which may contain both sync and async logic.
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// Here's an example of conditionally dispatching actions based on current state.
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export const incrementIfOdd = (amount) => (dispatch, getState) => {
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const currentValue = selectCount(getState());
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if (currentValue % 2 === 1) {
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dispatch(incrementByAmount(amount));
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}
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};
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export default counterSlice.reducer;
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@@ -1,33 +0,0 @@
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import counterReducer, {
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increment,
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decrement,
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incrementByAmount,
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} from './counterSlice';
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describe('counter reducer', () => {
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const initialState = {
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value: 3,
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status: 'idle',
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};
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it('should handle initial state', () => {
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expect(counterReducer(undefined, { type: 'unknown' })).toEqual({
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value: 0,
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status: 'idle',
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});
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});
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it('should handle increment', () => {
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const actual = counterReducer(initialState, increment());
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expect(actual.value).toEqual(4);
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});
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it('should handle decrement', () => {
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const actual = counterReducer(initialState, decrement());
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expect(actual.value).toEqual(2);
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});
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it('should handle incrementByAmount', () => {
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const actual = counterReducer(initialState, incrementByAmount(2));
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expect(actual.value).toEqual(5);
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});
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});
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Block a user