├── .eslintrc.json
├── .gitignore
├── @types
    ├── lodash
    │   └── index.d.ts
    └── plausible
    │   └── index.d.ts
├── README.md
├── app.d.ts
├── components
    └── RandomFox.tsx
├── next-env.d.ts
├── next.config.js
├── package-lock.json
├── package.json
├── pages
    ├── _app.tsx
    ├── globals.css
    └── index.tsx
├── postcss.config.js
├── public
    ├── favicon.ico
    └── vercel.svg
├── tailwind.config.js
└── tsconfig.json


/.eslintrc.json:
--------------------------------------------------------------------------------
1 | {
2 |   "extends": "next/core-web-vitals",
3 |   "rules": {
4 |     "@next/next/no-img-element": "off",
5 |     "jsx-a11y/alt-text": "off"
6 |   }
7 | }
8 | 


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/.gitignore:
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 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | /.pnp
 6 | .pnp.js
 7 | 
 8 | # testing
 9 | /coverage
10 | 
11 | # next.js
12 | /.next/
13 | /out/
14 | 
15 | # production
16 | /build
17 | 
18 | # misc
19 | .DS_Store
20 | *.pem
21 | 
22 | # debug
23 | npm-debug.log*
24 | yarn-debug.log*
25 | yarn-error.log*
26 | .pnpm-debug.log*
27 | 
28 | # local env files
29 | .env*.local
30 | 
31 | # vercel
32 | .vercel
33 | 
34 | # typescript
35 | *.tsbuildinfo
36 | 


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/@types/lodash/index.d.ts:
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 1 | // Utilizado como ejemplo para el curso de Platzi
 2 | // Lodash cuenta con sus propios tipos comunitarios
 3 | // Se pueden instalar con `npm install @types/lodash --save-dev`
 4 | declare module "lodash" {
 5 |   export function random(
 6 |     lower?: number,
 7 |     upper?: number,
 8 |     floating?: boolean
 9 |   ): number;
10 | }
11 | 


--------------------------------------------------------------------------------
/@types/plausible/index.d.ts:
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 1 | type Options = {
 2 |   /**
 3 |    * called once the event is logged successfully.
 4 |    */
 5 |   callback?: () => void;
 6 |   /**
 7 |    * custom properties for the event
 8 |    */
 9 |   props?: Record<string, string | number | undefined | null>;
10 | };
11 | 
12 | interface Window {
13 |   /**
14 |    * Track Custom event goals using Plausible
15 |    *
16 |    * ⚠️ This function is not really implemented in our codebase.
17 |    * This is just an example of how to use TypeScript types.
18 |    *
19 |    * @see https://plausible.io/docs/custom-event-goals
20 |    *
21 |    * @example
22 |    * registerForm.addEventListener('submit', function(e) {
23 |    *   e.preventDefault();
24 |    *   setTimeout(submitForm, 1000);
25 |    *   var formSubmitted = false;
26 |    *
27 |    *   function submitForm() {
28 |    *     if (!formSubmitted) {
29 |    *       formSubmitted = true;
30 |    *       registerForm.submit();
31 |    *     }
32 |    *   }
33 |    *
34 |    *   plausible('Signup', {callback: submitForm});
35 |    * })
36 |    */
37 |   plausible: (event: string, options?: Options) => void;
38 | }
39 | 


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/README.md:
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 1 | <p align="center">
 2 |   <a href="https://platzi.com/cursos/react-typescript/" target="_blank">
 3 |     <img alt="Curso de Platzi de React con TypeScript" src="https://static.platzi.com/media/achievements/piezas-react-typescript-apollo-server-prisma-cms_badge-5995d28d-302e-4bdd-bd86-e49a1b.png" width="60" />
 4 |   </a>
 5 |   <a href="https://platzi.com/cursos/react-typescript/" target="_blank">
 6 |     <img alt="Curso de Next.js con GraphQL" src="https://static.platzi.com/media/achievements/piezas-react-typescript_badge-cbeed361-b95b-439e-a48b-ce024f85384e.png" width="60" />
 7 |   </a>
 8 | </p>
 9 | <h1 align="center">
10 |   Curso de Platzi de React con TypeScript
11 | </h1>
12 | 
13 | Este repositorio contiene el proyecto realizado durante el Curso de Platzi de React con TypeScript, dictado por [@jonalvarezz](https://twitter.com/jonalvarezz) para [Platzi](https://platzi.com).
14 | 
15 | ## 🚗 Dependencias
16 | 
17 | 1. Node.js
18 | 
19 |    Recomendamos instalarlo a través de [Fast Node Manager (fnm)](https://github.com/Schniz/fnm). Versiones soportadas: 14+.
20 | 
21 | ## 🤖 Guía Para Desarrollo Local
22 | 
23 | 1. Clona el repositorio
24 | 
25 |    ```sh
26 |    git clone git@github.com:jonalvarezz/platzi-react-typescript.git
27 |    ```
28 | 
29 | 1. Instala dependencias
30 | 
31 |    ```sh
32 |    # Instala desde la raíz del proyecto
33 |    cd platzi-react-typescript
34 |    npm install
35 |    ```
36 | 
37 | 1. Inicia la aplicación
38 | 
39 |    ```sh
40 |    # Desde la raíz del proyecto:
41 |    npm run dev
42 |    ```
43 | 
44 |    🚀 La app estará disponible en http://localhost:3000
45 | 
46 | ## 🐞 Encontraste un error o mejora?
47 | 
48 | Ayuda a otros estudiantes con eso que acabas de descubrir que haría este curso y respositorio mucho mejor.
49 | 
50 | - En [Issues](https://github.com/jonalvarezz/react-typescript/issues/new) puedes reportar errores, agregar sugerencias y comentarios.
51 | - Por su parte, los [Pull Request](https://github.com/jonalvarezz/react-typescript/pulls) siempre estarán abiertos para recibir mejoras puntuales.
52 | 
53 | Happy hacking!
54 | 


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/app.d.ts:
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1 | type IFoxImageItem = {
2 |   id: string;
3 |   url: string;
4 | };
5 | 


--------------------------------------------------------------------------------
/components/RandomFox.tsx:
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 1 | import { useRef, useEffect, useState } from "react";
 2 | import type { ImgHTMLAttributes } from "react";
 3 | 
 4 | type LazyImageProps = {
 5 |   src: string;
 6 |   onLazyLoad?: (img: HTMLImageElement) => void;
 7 | };
 8 | 
 9 | type Props = ImgHTMLAttributes<HTMLImageElement> & LazyImageProps;
10 | 
11 | export function LazyImage({
12 |   src,
13 |   onLazyLoad,
14 |   ...imgProps
15 | }: Props): JSX.Element {
16 |   const node = useRef<HTMLImageElement>(null);
17 |   const [isLazyLoaded, setIsLazyLoaded] = useState(false);
18 |   const [currentSrc, setCurrentSrc] = useState(
19 |     "data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMzIwIiBoZWlnaHQ9IjMyMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB2ZXJzaW9uPSIxLjEiLz4="
20 |   );
21 | 
22 |   useEffect(() => {
23 |     if (isLazyLoaded) {
24 |       return;
25 |     }
26 | 
27 |     const observer = new IntersectionObserver((entries) => {
28 |       entries.forEach((entry) => {
29 |         if (!entry.isIntersecting || !node.current) {
30 |           return;
31 |         }
32 | 
33 |         setCurrentSrc(src);
34 |         observer.disconnect();
35 |         setIsLazyLoaded(true);
36 | 
37 |         if (typeof onLazyLoad === "function") {
38 |           onLazyLoad(node.current);
39 |         }
40 | 
41 |         // Ejemplo de extension de Window con Plausible
42 |         // window.plausible("lazyload", { props: { src } });
43 |       });
44 |     });
45 | 
46 |     if (node.current) {
47 |       observer.observe(node.current);
48 |     }
49 | 
50 |     return () => {
51 |       observer.disconnect();
52 |     };
53 |   }, [src, onLazyLoad, isLazyLoaded]);
54 | 
55 |   return <img ref={node} src={currentSrc} {...imgProps} />;
56 | }
57 | 


--------------------------------------------------------------------------------
/next-env.d.ts:
--------------------------------------------------------------------------------
1 | /// <reference types="next" />
2 | /// <reference types="next/image-types/global" />
3 | 
4 | // NOTE: This file should not be edited
5 | // see https://nextjs.org/docs/basic-features/typescript for more information.
6 | 


--------------------------------------------------------------------------------
/next.config.js:
--------------------------------------------------------------------------------
1 | /** @type {import('next').NextConfig} */
2 | const nextConfig = {
3 |   reactStrictMode: true,
4 |   swcMinify: true,
5 | }
6 | 
7 | module.exports = nextConfig
8 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "platzi-react-typescript",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "scripts": {
 6 |     "dev": "next dev",
 7 |     "build": "next build",
 8 |     "start": "next start",
 9 |     "lint": "next lint"
10 |   },
11 |   "dependencies": {
12 |     "lodash": "^4.17.21",
13 |     "next": "12.2.3",
14 |     "react": "18.2.0",
15 |     "react-dom": "18.2.0"
16 |   },
17 |   "devDependencies": {
18 |     "@types/node": "18.6.2",
19 |     "@types/react": "18.0.15",
20 |     "@types/react-dom": "18.0.6",
21 |     "autoprefixer": "^10.4.8",
22 |     "eslint": "8.20.0",
23 |     "eslint-config-next": "12.2.3",
24 |     "postcss": "^8.4.16",
25 |     "tailwindcss": "^3.1.8",
26 |     "typescript": "4.7.4"
27 |   }
28 | }
29 | 


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/pages/_app.tsx:
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1 | import "./globals.css";
2 | import type { AppProps } from "next/app";
3 | 
4 | function MyApp({ Component, pageProps }: AppProps) {
5 |   return <Component {...pageProps} />;
6 | }
7 | 
8 | export default MyApp;
9 | 


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/pages/globals.css:
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1 | @tailwind base;
2 | @tailwind components;
3 | @tailwind utilities;
4 | 


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/pages/index.tsx:
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  1 | import { useState } from "react";
  2 | import type { MouseEventHandler } from "react";
  3 | import type { NextPage } from "next";
  4 | import Head from "next/head";
  5 | 
  6 | // Ejemplo utilizando una librería sin tipos.
  7 | // Realmente no hace falta su uso.
  8 | import { random } from "lodash";
  9 | 
 10 | import { LazyImage } from "@/components/RandomFox";
 11 | 
 12 | // generate simple unique id
 13 | const generateId = (): string => {
 14 |   return (
 15 |     Math.random().toString(36).substring(2, 15) +
 16 |     Math.random().toString(36).substring(2, 15)
 17 |   );
 18 | };
 19 | 
 20 | // random number from 1 to 122
 21 | const myRandom = () => random(1, 122);
 22 | 
 23 | const Home: NextPage = () => {
 24 |   const [images, setImages] = useState<Array<IFoxImageItem>>([]);
 25 | 
 26 |   const addNewFox: MouseEventHandler<HTMLButtonElement> = () => {
 27 |     const id = generateId();
 28 |     const url = `https://randomfox.ca/images/${myRandom()}.jpg`;
 29 |     setImages([...images, { id, url }]);
 30 |   };
 31 | 
 32 |   return (
 33 |     <div className="flex flex-col min-h-screen">
 34 |       <Head>
 35 |         <title>
 36 |           Curso de Platzi de React con TypeScript por @jonalvarezz 🦑
 37 |         </title>
 38 |         <meta
 39 |           name="description"
 40 |           content="Un curso en el que iremos paso a paso dominando React con TypeScript para crear un componente genérico para cargar imágenes con lazy loading."
 41 |         />
 42 |         <link
 43 |           rel="icon"
 44 |           href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🦊</text></svg>"
 45 |         />
 46 |       </Head>
 47 | 
 48 |       <main className="text-center">
 49 |         <PageContent />
 50 |         <div className="m-4">
 51 |           <button
 52 |             onClick={addNewFox}
 53 |             className="py-2 px-4 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
 54 |           >
 55 |             Agregar un nuevo zorro
 56 |           </button>
 57 |         </div>
 58 |         {images.map(({ id, url }, index) => (
 59 |           <div className="p-4" key={id}>
 60 |             <LazyImage
 61 |               src={url}
 62 |               width="320"
 63 |               height="auto"
 64 |               className="mx-auto rounded-md bg-gray-300"
 65 |               onClick={() => {
 66 |                 console.log("holi!");
 67 |               }}
 68 |               onLazyLoad={(img) => {
 69 |                 console.log(`Image #${index + 1} cargada. Nodo:`, img);
 70 |               }}
 71 |             />
 72 |           </div>
 73 |         ))}
 74 |       </main>
 75 | 
 76 |       <footer className="text-center mt-auto p-6 text-sm text-gray-500">
 77 |         <p>
 78 |           Images from{" "}
 79 |           <a href="https://randomfox.ca" target="_blank" rel="noreferrer">
 80 |             randomfox.ca
 81 |           </a>{" "}
 82 |           | Made by{" "}
 83 |           <a href="https://twitter.com/jonalvarezz">@jonalvarezz 🦑</a> for{" "}
 84 |           <a href="https://twitter.com/platzi">@platzi</a>
 85 |         </p>
 86 |       </footer>
 87 |     </div>
 88 |   );
 89 | };
 90 | 
 91 | function PageContent() {
 92 |   return (
 93 |     <div className="pt-10 pb-4 px-4 sm:px-6 lg:px-8">
 94 |       <p className="text-base leading-6 text-indigo-600 font-semibold tracking-wide uppercase">
 95 |         Curso React con TypeScript
 96 |       </p>
 97 |       <h3 className="mt-2 text-3xl leading-8 font-extrabold tracking-tight text-gray-900 sm:text-4xl sm:leading-10">
 98 |         Componente Lazy Image
 99 |       </h3>
100 |       <div className="max-w-xl mx-auto text-xl text-gray-500 leading-7">
101 |         <p className="mt-4">
102 |           Un componente genérico de React para cargar imágenes con lazy loading.
103 |         </p>
104 |         <p className="mt-4">✨✨</p>
105 |         <p className="mt-4">
106 |           Las imágenes agregadas no se descargarán hasta que sean visibles en la
107 |           pantalla
108 |         </p>
109 |         <p className="mt-4">✨✨</p>
110 |       </div>
111 |     </div>
112 |   );
113 | }
114 | 
115 | export default Home;
116 | 


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/postcss.config.js:
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1 | module.exports = {
2 |   plugins: {
3 |     tailwindcss: {},
4 |     autoprefixer: {},
5 |   },
6 | }
7 | 


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/public/favicon.ico:
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https://raw.githubusercontent.com/jonalvarezz/platzi-react-typescript/a16ba75c149eb4977c455e47e6eed67a00621a28/public/favicon.ico


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/public/vercel.svg:
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1 | <svg width="283" height="64" viewBox="0 0 283 64" fill="none" 
2 |     xmlns="http://www.w3.org/2000/svg">
3 |     <path d="M141.04 16c-11.04 0-19 7.2-19 18s8.96 18 20 18c6.67 0 12.55-2.64 16.19-7.09l-7.65-4.42c-2.02 2.21-5.09 3.5-8.54 3.5-4.79 0-8.86-2.5-10.37-6.5h28.02c.22-1.12.35-2.28.35-3.5 0-10.79-7.96-17.99-19-17.99zm-9.46 14.5c1.25-3.99 4.67-6.5 9.45-6.5 4.79 0 8.21 2.51 9.45 6.5h-18.9zM248.72 16c-11.04 0-19 7.2-19 18s8.96 18 20 18c6.67 0 12.55-2.64 16.19-7.09l-7.65-4.42c-2.02 2.21-5.09 3.5-8.54 3.5-4.79 0-8.86-2.5-10.37-6.5h28.02c.22-1.12.35-2.28.35-3.5 0-10.79-7.96-17.99-19-17.99zm-9.45 14.5c1.25-3.99 4.67-6.5 9.45-6.5 4.79 0 8.21 2.51 9.45 6.5h-18.9zM200.24 34c0 6 3.92 10 10 10 4.12 0 7.21-1.87 8.8-4.92l7.68 4.43c-3.18 5.3-9.14 8.49-16.48 8.49-11.05 0-19-7.2-19-18s7.96-18 19-18c7.34 0 13.29 3.19 16.48 8.49l-7.68 4.43c-1.59-3.05-4.68-4.92-8.8-4.92-6.07 0-10 4-10 10zm82.48-29v46h-9V5h9zM36.95 0L73.9 64H0L36.95 0zm92.38 5l-27.71 48L73.91 5H84.3l17.32 30 17.32-30h10.39zm58.91 12v9.69c-1-.29-2.06-.49-3.2-.49-5.81 0-10 4-10 10V51h-9V17h9v9.2c0-5.08 5.91-9.2 13.2-9.2z" fill="#000"/>
4 | </svg>


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/tailwind.config.js:
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 1 | /** @type {import('tailwindcss').Config} */
 2 | module.exports = {
 3 |   content: [
 4 |     "./pages/**/*.{js,ts,jsx,tsx}",
 5 |     "./components/**/*.{js,ts,jsx,tsx}",
 6 |   ],
 7 |   theme: {
 8 |     extend: {},
 9 |   },
10 |   plugins: [],
11 | };
12 | 


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/tsconfig.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "compilerOptions": {
 3 |     "target": "es5",
 4 |     "lib": ["dom", "dom.iterable", "esnext"],
 5 |     "allowJs": true,
 6 |     "skipLibCheck": true,
 7 |     "strict": true,
 8 |     "forceConsistentCasingInFileNames": true,
 9 |     "noEmit": true,
10 |     "noImplicitAny": true,
11 |     "noImplicitReturns": true,
12 |     "esModuleInterop": true,
13 |     "module": "esnext",
14 |     "moduleResolution": "node",
15 |     "resolveJsonModule": true,
16 |     "isolatedModules": true,
17 |     "jsx": "preserve",
18 |     "incremental": true,
19 |     "baseUrl": ".",
20 |     "paths": {
21 |       "@/components/*": ["components/*"]
22 |     }
23 |   },
24 |   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
25 |   "exclude": ["node_modules"]
26 | }
27 | 


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