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yutsuo 6 years ago
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  1. 23
      .gitignore
  2. 15249
      package-lock.json
  3. 35
      package.json
  4. BIN
      public/favicon.ico
  5. 43
      public/index.html
  6. BIN
      public/logo192.png
  7. BIN
      public/logo512.png
  8. 25
      public/manifest.json
  9. 3
      public/robots.txt
  10. 13
      src/index.css
  11. 141
      src/index.js

23
.gitignore vendored

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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# dependencies
/node_modules
/.pnp
.pnp.js
# testing
/coverage
# production
/build
# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*

15249
package-lock.json generated

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35
package.json

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{
"name": "enhanced-reducer",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^4.2.4",
"@testing-library/react": "^9.5.0",
"@testing-library/user-event": "^7.2.1",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-scripts": "3.4.1",
"bootstrap": "4.4.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}

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43
public/index.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta
name="description"
content="Web site created using create-react-app"
/>
<link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
<!--
manifest.json provides metadata used when your web app is installed on a
user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-->
<link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
<!--
Notice the use of %PUBLIC_URL% in the tags above.
It will be replaced with the URL of the `public` folder during the build.
Only files inside the `public` folder can be referenced from the HTML.
Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
work correctly both with client-side routing and a non-root public URL.
Learn how to configure a non-root public URL by running `npm run build`.
-->
<title>React App</title>
</head>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
<!--
This HTML file is a template.
If you open it directly in the browser, you will see an empty page.
You can add webfonts, meta tags, or analytics to this file.
The build step will place the bundled scripts into the <body> tag.
To begin the development, run `npm start` or `yarn start`.
To create a production bundle, use `npm run build` or `yarn build`.
-->
</body>
</html>

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25
public/manifest.json

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{
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
{
"src": "favicon.ico",
"sizes": "64x64 32x32 24x24 16x16",
"type": "image/x-icon"
},
{
"src": "logo192.png",
"type": "image/png",
"sizes": "192x192"
},
{
"src": "logo512.png",
"type": "image/png",
"sizes": "512x512"
}
],
"start_url": ".",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
}

3
public/robots.txt

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# https://www.robotstxt.org/robotstxt.html
User-agent: *
Disallow:

13
src/index.css

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body {
margin: 0;
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
code {
font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
monospace;
}

141
src/index.js

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import * as React from "react";
import { render } from "react-dom";
import produce from "immer";
import { set, has } from "lodash";
import "bootstrap/dist/css/bootstrap.css";
function enhancedReducer(state, updateArg) {
// check if the type of update argument is a callback function
if (updateArg.constructor === Function) {
return { ...state, ...updateArg(state) };
}
// if the type of update argument is an object
if (updateArg.constructor === Object) {
// does the update object have _path and _value as it's keys
// if yes then use them to update deep object values
if (has(updateArg, "_path") && has(updateArg, "_value")) {
const { _path, _value } = updateArg;
return produce(state, (draft) => {
set(draft, _path, _value);
});
} else {
return { ...state, ...updateArg };
}
}
}
const initialState = {
firstName: "",
lastName: "",
address: {
addressLine1: "",
addressLine2: "",
pinCode: "",
},
isMember: false,
};
function App() {
const [state, updateState] = React.useReducer(enhancedReducer, initialState);
const updateForm = React.useCallback(({ target: { value, name, type } }) => {
const updatePath = name.split(".");
// if the input is a checkbox then use callback function to update
// the toggle state based on previous state
if (type === "checkbox") {
updateState((prevState) => ({
[name]: !prevState[name],
}));
return;
}
// if we have to update the root level nodes in the form
if (updatePath.length === 1) {
const [key] = updatePath;
updateState({
[key]: value,
});
}
// if we have to update nested nodes in the form object
// use _path and _value to update them.
if (updatePath.length === 2) {
updateState({
_path: updatePath,
_value: value,
});
}
}, []);
return (
<div className="App">
<h1>Hello, i'm your supposedly complex form.</h1>
<input
className="form-control"
type="text"
name="firstName"
placeholder="First Name"
onChange={updateForm}
value={state.firstName}
/>
<br />
<input
className="form-control"
type="text"
name="lastName"
placeholder="Last Name"
onChange={updateForm}
value={state.lastName}
/>
<br />
<input
className="form-control"
type="text"
name="address.addressLine1"
placeholder="Address Line One"
onChange={updateForm}
value={state.address.addressLine1}
/>
<br />
<input
className="form-control"
type="text"
name="address.addressLine2"
placeholder="Address Line Two"
onChange={updateForm}
value={state.address.addressLine2}
/>
<br />
<input
className="form-control"
type="text"
name="address.pinCode"
placeholder="Pincode"
onChange={updateForm}
value={state.address.pinCode}
/>
<br />
<div className="form-check">
<input
className="form-check-input"
type="checkbox"
name="isMember"
onChange={updateForm}
checked={state.isMember}
id="exampleCheck1"
/>
<label className="form-check-label" htmlFor="exampleCheck1">
Are you a member already?
</label>
</div>
</div>
);
}
const rootElement = document.getElementById("root");
render(<App />, rootElement);
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