Merge branch 'add-challenge-simple-animations' of https://github.com/svenson95/angular-challenges into add-challenge-simple-animations

This commit is contained in:
Sven Brodny
2024-02-19 23:58:55 +01:00
37 changed files with 588 additions and 36 deletions

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@@ -79,6 +79,15 @@
"translation-ru"
]
},
{
"login": "wandri",
"name": "Wandrille",
"avatar_url": "https://avatars.githubusercontent.com/u/15016833?v=4",
"profile": "https://wandrille-guesdon.com/",
"contributions": [
"challenge"
]
},
{
"login": "alan-bio",
"name": "Alan Dragicevich",
@@ -201,6 +210,15 @@
"contributions": [
"doc"
]
},
{
"login": "svenson95",
"name": "Sven Brodny",
"avatar_url": "https://avatars.githubusercontent.com/u/46655156?v=4",
"profile": "https://svenson95.github.io/sb-portfolio/",
"contributions": [
"doc"
]
}
],
"contributorsPerLine": 7,

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@@ -38,23 +38,25 @@ Check [all 45 challenges](https://angular-challenges.vercel.app/)
<td align="center" valign="top" width="14.28%"><a href="https://github.com/jdegand"><img src="https://avatars.githubusercontent.com/u/70610011?v=4?s=100" width="100px;" alt="J. Degand"/><br /><sub><b>J. Degand</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=jdegand" title="Documentation">📖</a> <a href="#content-jdegand" title="Content">🖋</a> <a href="https://github.com/tomalaforge/angular-challenges/commits?author=jdegand" title="Code">💻</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/DeveshChau"><img src="https://avatars.githubusercontent.com/u/9509673?v=4?s=100" width="100px;" alt="Devesh Chaudhari"/><br /><sub><b>Devesh Chaudhari</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=DeveshChau" title="Code">💻</a> <a href="https://github.com/tomalaforge/angular-challenges/issues?q=author%3ADeveshChau" title="Bug reports">🐛</a> <a href="#challenge-DeveshChau" title="Create a challenge">🧩</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/stillst"><img src="https://avatars.githubusercontent.com/u/1463098?v=4?s=100" width="100px;" alt="stillst"/><br /><sub><b>stillst</b></sub></a><br /><a href="#challenge-stillst" title="Create a challenge">🧩</a> <a href="#translation-ru-stillst" title="Translate in Russian">🇷🇺</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://wandrille-guesdon.com/"><img src="https://avatars.githubusercontent.com/u/15016833?v=4?s=100" width="100px;" alt="Wandrille"/><br /><sub><b>Wandrille</b></sub></a><br /><a href="#challenge-wandri" title="Create a challenge">🧩</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/alan-bio"><img src="https://avatars.githubusercontent.com/u/31838230?v=4?s=100" width="100px;" alt="Alan Dragicevich"/><br /><sub><b>Alan Dragicevich</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=alan-bio" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/edimitchel"><img src="https://avatars.githubusercontent.com/u/2922851?v=4?s=100" width="100px;" alt="Michel EDIGHOFFER"/><br /><sub><b>Michel EDIGHOFFER</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=edimitchel" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/gsgonzalez88"><img src="https://avatars.githubusercontent.com/u/39884678?v=4?s=100" width="100px;" alt="Gerardo Sebastian Gonzalez"/><br /><sub><b>Gerardo Sebastian Gonzalez</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=gsgonzalez88" title="Documentation">📖</a></td>
</tr>
<tr>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/gsgonzalez88"><img src="https://avatars.githubusercontent.com/u/39884678?v=4?s=100" width="100px;" alt="Gerardo Sebastian Gonzalez"/><br /><sub><b>Gerardo Sebastian Gonzalez</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=gsgonzalez88" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/marryday"><img src="https://avatars.githubusercontent.com/u/57489315?v=4?s=100" width="100px;" alt="Evseev Yuriy"/><br /><sub><b>Evseev Yuriy</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/issues?q=author%3Amarryday" title="Bug reports">🐛</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/tomer953"><img src="https://avatars.githubusercontent.com/u/1807493?v=4?s=100" width="100px;" alt="Tomer953"/><br /><sub><b>Tomer953</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/issues?q=author%3Atomer953" title="Bug reports">🐛</a> <a href="https://github.com/tomalaforge/angular-challenges/commits?author=tomer953" title="Documentation">📖</a> <a href="https://github.com/tomalaforge/angular-challenges/commits?author=tomer953" title="Code">💻</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/dmmishchenko"><img src="https://avatars.githubusercontent.com/u/51910160?v=4?s=100" width="100px;" alt="Dmitriy Mishchenko"/><br /><sub><b>Dmitriy Mishchenko</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=dmmishchenko" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="http://www.sagardev.com.np"><img src="https://avatars.githubusercontent.com/u/30800393?v=4?s=100" width="100px;" alt="Sagar Devkota"/><br /><sub><b>Sagar Devkota</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=Sagardevkota" title="Documentation">📖</a> <a href="https://github.com/tomalaforge/angular-challenges/commits?author=Sagardevkota" title="Code">💻</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://nelsonguti.dev/"><img src="https://avatars.githubusercontent.com/u/62297014?v=4?s=100" width="100px;" alt="Nelson Gutierrez"/><br /><sub><b>Nelson Gutierrez</b></sub></a><br /><a href="#translation-es-nelsongutidev" title="Translate in Spanish">🇪🇸</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/ho-ssain"><img src="https://avatars.githubusercontent.com/u/61125174?v=4?s=100" width="100px;" alt="Hossain K. M."/><br /><sub><b>Hossain K. M.</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=ho-ssain" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/kabrunko-dev/"><img src="https://avatars.githubusercontent.com/u/142346548?v=4?s=100" width="100px;" alt="Diogo Nishikawa"/><br /><sub><b>Diogo Nishikawa</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=kabrunko-dev" title="Code">💻</a> <a href="#translation-pt-kabrunko-dev" title="Translate in Portuguese">🇵🇹</a> <a href="https://github.com/tomalaforge/angular-challenges/commits?author=kabrunko-dev" title="Documentation">📖</a></td>
</tr>
<tr>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/kabrunko-dev/"><img src="https://avatars.githubusercontent.com/u/142346548?v=4?s=100" width="100px;" alt="Diogo Nishikawa"/><br /><sub><b>Diogo Nishikawa</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=kabrunko-dev" title="Code">💻</a> <a href="#translation-pt-kabrunko-dev" title="Translate in Portuguese">🇵🇹</a> <a href="https://github.com/tomalaforge/angular-challenges/commits?author=kabrunko-dev" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="http://www.streamoverlaypro.com"><img src="https://avatars.githubusercontent.com/u/1978642?v=4?s=100" width="100px;" alt="Erick Rodriguez"/><br /><sub><b>Erick Rodriguez</b></sub></a><br /><a href="#translation-es-ErickRodrCodes" title="Translate in Spanish">🇪🇸</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://eduardoroth.dev"><img src="https://avatars.githubusercontent.com/u/5419161?v=4?s=100" width="100px;" alt="Eduardo Roth"/><br /><sub><b>Eduardo Roth</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=eduardoRoth" title="Documentation">📖</a> <a href="#translation-es-eduardoRoth" title="Translate in Spanish">🇪🇸</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://github.com/1fbr"><img src="https://avatars.githubusercontent.com/u/63980689?v=4?s=100" width="100px;" alt="Fernando Bello"/><br /><sub><b>Fernando Bello</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=1fbr" title="Documentation">📖</a></td>
<td align="center" valign="top" width="14.28%"><a href="https://svenson95.github.io/sb-portfolio/"><img src="https://avatars.githubusercontent.com/u/46655156?v=4?s=100" width="100px;" alt="Sven Brodny"/><br /><sub><b>Sven Brodny</b></sub></a><br /><a href="https://github.com/tomalaforge/angular-challenges/commits?author=svenson95" title="Documentation">📖</a></td>
</tr>
</tbody>
<tfoot>

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@@ -0,0 +1,36 @@
{
"extends": ["../../../.eslintrc.json"],
"ignorePatterns": ["!**/*"],
"overrides": [
{
"files": ["*.ts"],
"extends": [
"plugin:@nx/angular",
"plugin:@angular-eslint/template/process-inline-templates"
],
"rules": {
"@angular-eslint/directive-selector": [
"error",
{
"type": "attribute",
"prefix": "app",
"style": "camelCase"
}
],
"@angular-eslint/component-selector": [
"error",
{
"type": "element",
"prefix": "app",
"style": "kebab-case"
}
]
}
},
{
"files": ["*.html"],
"extends": ["plugin:@nx/angular-template"],
"rules": {}
}
]
}

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@@ -0,0 +1,13 @@
# React in angular
> author: wandrille-guesdon
### Run Application
```bash
npx nx serve angular-react-in-angular
```
### Documentation and Instruction
Challenge documentation is [here](https://angular-challenges.vercel.app/challenges/angular/45-react-in-angular/).

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@@ -0,0 +1,22 @@
/* eslint-disable */
export default {
displayName: 'angular-react-in-angular',
preset: '../../../jest.preset.js',
setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'],
coverageDirectory: '../../../coverage/apps/angular/react-in-angular',
transform: {
'^.+\\.(ts|mjs|js|html)$': [
'jest-preset-angular',
{
tsconfig: '<rootDir>/tsconfig.spec.json',
stringifyContentPathRegex: '\\.(html|svg)$',
},
],
},
transformIgnorePatterns: ['node_modules/(?!.*\\.mjs$)'],
snapshotSerializers: [
'jest-preset-angular/build/serializers/no-ng-attributes',
'jest-preset-angular/build/serializers/ng-snapshot',
'jest-preset-angular/build/serializers/html-comment',
],
};

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@@ -0,0 +1,80 @@
{
"name": "angular-react-in-angular",
"$schema": "../../../node_modules/nx/schemas/project-schema.json",
"projectType": "application",
"prefix": "app",
"sourceRoot": "apps/angular/react-in-angular/src",
"tags": [],
"targets": {
"build": {
"executor": "@angular-devkit/build-angular:application",
"outputs": ["{options.outputPath}"],
"options": {
"outputPath": "dist/apps/angular/react-in-angular",
"index": "apps/angular/react-in-angular/src/index.html",
"browser": "apps/angular/react-in-angular/src/main.ts",
"polyfills": ["zone.js"],
"tsConfig": "apps/angular/react-in-angular/tsconfig.app.json",
"inlineStyleLanguage": "scss",
"assets": [
"apps/angular/react-in-angular/src/favicon.ico",
"apps/angular/react-in-angular/src/assets"
],
"styles": ["apps/angular/react-in-angular/src/styles.scss"],
"scripts": []
},
"configurations": {
"production": {
"budgets": [
{
"type": "initial",
"maximumWarning": "500kb",
"maximumError": "1mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "2kb",
"maximumError": "4kb"
}
],
"outputHashing": "all"
},
"development": {
"optimization": false,
"extractLicenses": false,
"sourceMap": true
}
},
"defaultConfiguration": "production"
},
"serve": {
"executor": "@angular-devkit/build-angular:dev-server",
"configurations": {
"production": {
"buildTarget": "angular-react-in-angular:build:production"
},
"development": {
"buildTarget": "angular-react-in-angular:build:development"
}
},
"defaultConfiguration": "development"
},
"extract-i18n": {
"executor": "@angular-devkit/build-angular:extract-i18n",
"options": {
"buildTarget": "angular-react-in-angular:build"
}
},
"lint": {
"executor": "@nx/eslint:lint",
"outputs": ["{options.outputFile}"]
},
"test": {
"executor": "@nx/jest:jest",
"outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
"options": {
"jestConfig": "apps/angular/react-in-angular/jest.config.ts"
}
}
}
}

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@@ -0,0 +1,62 @@
import { Component, signal } from '@angular/core';
import { PostComponent } from './react/post.component';
type Post = { title: string; description: string };
@Component({
standalone: true,
imports: [PostComponent],
selector: 'app-root',
template: `
<div class="flex flex-col gap-2 p-12">
<div class="flex gap-2">
@for (post of posts; track post.title) {
<div class="rounded-lg bg-gray-100 p-4">
<app-post
(selectPost)="selectPost(post)"
[post]="post"
[isSelected]="post.title === selectedPost()?.title"></app-post>
</div>
}
</div>
<div class="flex flex-col gap-2 border p-4">
<span class="text-xs font-medium">Selected Post:</span>
<span class="text-lg text-blue-700">
{{ selectedPost()?.title ?? '-' }}
</span>
</div>
</div>
`,
styles: [''],
})
export class AppComponent {
readonly posts = [
{
title: 'A Deep Dive into Angular',
description:
"Explore Angular's core features, its evolution, and best practices in development for creating dynamic, efficient web applications in our comprehensive guide.",
pictureLink:
'https://images.unsplash.com/photo-1471958680802-1345a694ba6d',
},
{
title: 'The Perfect Combination',
description:
'Unveil the power of combining Angular & React in web development, maximizing efficiency and flexibility for building scalable, sophisticated applications.',
pictureLink:
'https://images.unsplash.com/photo-1518717202715-9fa9d099f58a',
},
{
title: 'Taking Angular to the Next Level',
description:
"Discover how integrating React with Angular elevates web development, blending Angular's structure with React's UI prowess for advanced applications.",
pictureLink:
'https://images.unsplash.com/photo-1532103050105-860af53bc6aa',
},
];
readonly selectedPost = signal<Post | null>(null);
selectPost(post: Post) {
this.selectedPost.set(post);
}
}

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@@ -0,0 +1,5 @@
import { ApplicationConfig } from '@angular/core';
export const appConfig: ApplicationConfig = {
providers: [],
};

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@@ -0,0 +1,27 @@
// import React from 'react';
export default function ReactPost(props: {
title?: string,
description?: string,
pictureLink?: string,
selected?: boolean,
handleClick: () => void
}) {
return (
<div className={props.selected ? 'bg-blue-100' : 'bg-white'}>
<div className="max-w-sm rounded overflow-hidden shadow-lg">
<img className="w-full h-32 object-cover" src={props.pictureLink} alt={props.title}></img>
<div className="px-6 py-4 flex flex-col gap-2">
<div className="font-bold text-xl mb-2">{props.title}</div>
<p className="text-gray-700 text-base">
{props.description}
</p>
<button className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded"
onClick={props.handleClick}>
Select
</button>
</div>
</div>
</div>
);
}

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@@ -0,0 +1,17 @@
import { Component, EventEmitter, input, Output } from '@angular/core';
type Post = { title: string; description: string; pictureLink: string };
@Component({
standalone: true,
selector: 'app-post',
template: `
<div></div>
`,
styles: [''],
})
export class PostComponent {
post = input<Post | undefined>(undefined);
isSelected = input<boolean>(false);
@Output() selectPost = new EventEmitter<void>();
}

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@@ -0,0 +1,13 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>angular-react-in-angular</title>
<base href="/" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="icon" type="image/x-icon" href="favicon.ico" />
</head>
<body>
<app-root></app-root>
</body>
</html>

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@@ -0,0 +1,7 @@
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app/app.component';
import { appConfig } from './app/app.config';
bootstrapApplication(AppComponent, appConfig).catch((err) =>
console.error(err),
);

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@@ -0,0 +1,5 @@
@tailwind base;
@tailwind components;
@tailwind utilities;
/* You can add global styles to this file, and also import other style files */

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@@ -0,0 +1,2 @@
import '@testing-library/jest-dom';
import 'jest-preset-angular/setup-jest';

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@@ -0,0 +1,14 @@
const { createGlobPatternsForDependencies } = require('@nx/angular/tailwind');
const { join } = require('path');
/** @type {import('tailwindcss').Config} */
module.exports = {
content: [
join(__dirname, 'src/**/!(*.stories|*.spec).{ts,html}'),
...createGlobPatternsForDependencies(__dirname),
],
theme: {
extend: {},
},
plugins: [],
};

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@@ -0,0 +1,10 @@
{
"extends": "./tsconfig.json",
"compilerOptions": {
"outDir": "../../../dist/out-tsc",
"types": []
},
"files": ["src/main.ts"],
"include": ["src/**/*.d.ts"],
"exclude": ["jest.config.ts", "src/**/*.test.ts", "src/**/*.spec.ts"]
}

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@@ -0,0 +1,7 @@
{
"extends": "./tsconfig.json",
"include": ["src/**/*.ts"],
"compilerOptions": {
"types": ["jest", "node"]
}
}

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@@ -0,0 +1,33 @@
{
"compilerOptions": {
"target": "es2022",
"useDefineForClassFields": false,
"esModuleInterop": true,
"forceConsistentCasingInFileNames": true,
"strict": true,
"noImplicitOverride": true,
"noPropertyAccessFromIndexSignature": true,
"noImplicitReturns": true,
"noFallthroughCasesInSwitch": true,
},
"files": [],
"include": [],
"references": [
{
"path": "./tsconfig.app.json",
},
{
"path": "./tsconfig.spec.json",
},
{
"path": "./tsconfig.editor.json",
},
],
"extends": "../../../tsconfig.base.json",
"angularCompilerOptions": {
"enableI18nLegacyMessageIdFormat": false,
"strictInjectionParameters": true,
"strictInputAccessModifiers": true,
"strictTemplates": true,
},
}

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@@ -0,0 +1,15 @@
{
"extends": "./tsconfig.json",
"compilerOptions": {
"outDir": "../../dist/out-tsc",
"module": "commonjs",
"types": ["jest", "node", "@testing-library/jest-dom"]
},
"files": ["src/test-setup.ts"],
"include": [
"jest.config.ts",
"src/**/*.test.ts",
"src/**/*.spec.ts",
"src/**/*.d.ts"
]
}

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@@ -6,7 +6,6 @@ import { Component, input } from '@angular/core';
standalone: true,
imports: [NgOptimizedImage],
template: `
<!-- <div class="flex flex-col gap-3">-->
<div class="relative">
<img
ngSrc="assets/profil.webp"
@@ -23,7 +22,6 @@ import { Component, input } from '@angular/core';
</div>
<span class="text-md mt-2 font-bold uppercase">Thomas Laforge</span>
<span class="text-sm">{{ date() }}</span>
<!-- </div>-->
`,
host: {
class: 'flex flex-col justify-center items-center',

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@@ -2,5 +2,5 @@
"total": 45,
"🟢": 17,
"🟠": 120,
"🔴": 208
"🔴": 209
}

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@@ -0,0 +1,5 @@
{
"name": "Wandrille Guesdon",
"linkedin": "https://www.linkedin.com/in/wandrille-guesdon-53a54684/",
"github": "https://github.com/wandri"
}

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@@ -40,4 +40,4 @@ While the application works, the developer experience is far from being optimal.
- Try to work with the new built-in control flow syntax for loops and conditionals (documentation [here](https://angular.dev/guide/templates/control-flow))
- Use the signal API to manage your components state (documentation [here](https://angular.dev/guide/signals))
- To reference the template, use a directive instead of magic strings
- To reference the template, use a directive instead of magic strings ([What is wrong with magic strings?](https://softwareengineering.stackexchange.com/a/365344))

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@@ -8,14 +8,27 @@ sidebar:
order: 202
---
The goal of this series of 3 pipe challenges is to master **pipe** in Angular.
## Information
Pure pipes are a very useful way to transform data from your template. The difference between calling a function and a pipe is that pure pipes are memoized. So they won't be recalculated every change detection cycle if their inputs haven't changed.
This is the third of three `@Pipe()` challenges, the goal of this series is to master **pipes** in Angular.
## Information:
Pipes are a very powerful way to transform data in your template. The difference between calling a function and a pipe is that pure pipes are memoized. So they won't be recalculated every change detection cycle if their inputs haven't changed.
In this third exercice, you want to access utils functions. Currently you cannot access them directly from your template. The goal is to create a specific pipe for this utils file where you will need to pass the name of the function you want to call and the needed arguments.
Pipes are designed to be efficient and optimized for performance. They use change detection mechanisms to only recalculate the value if the input changes, to minimize unnecessary calculations and improving rendering performance.
## Constraints:
By default a pipe is pure, you should be aware that setting `pure` to false is prone to be inefficient, because it increases the amount of rerenders.
- must be strongly typed
:::note
A **pure** pipe is only called when the value changes.\
A **impure** pipe is called every change detection cycle.
:::
There are some useful predefined pipes like the DatePipe, UpperCasePipe and CurrencyPipe. To learn more about pipes in Angular, check the API documentation [here](https://angular.io/guide/pipes).
## Statement
In this exercise, you want to access utils functions. Currently you cannot access them directly from your template. The goal is to create a specific pipe for this utils file, where you will need to pass the name of the function you want to call and the needed arguments.
## Constraints
- Must be strongly typed

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@@ -23,4 +23,4 @@ In version 16, Angular introduced a new `Input` that can listen to route data. Y
## Statement
The goal of this exercice is to refactor the code to use the new `RouterInput` strategy.
The goal of this exercise is to refactor the code to use the new `RouterInput` strategy.

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@@ -10,18 +10,18 @@ sidebar:
---
:::note
This exercice can feel obsolete with the new control flow and the empty block inside the `@for` block. However **structural directives** are not going to be deleted any time soon, so you can still learn a lot from this exercice.
This exercise can feel obsolete with the new control flow and the empty block inside the `@for` block. However **structural directives** are not going to be deleted any time soon, so you can still learn a lot from this exercise.
:::
## Information
Directive is a very powerful tool only offered by the Angular framework. You can apply the DRY principal by having shared logic inside a directive and applying it to any component you want.
Directive is a very powerful tool only offered by the Angular framework. You can apply the DRY principle by having shared logic inside a directive and applying it to any component you want.
But the real power is that you can enhance an already existing directive which moreover doesn't **belong** to you.
## Statement
In this exercice, we have a want to display a list of persons. If the list is empty, you must display _" the list is empty !! "_.
In this exercise, we have a want to display a list of persons. If the list is empty, you must display _" the list is empty !! "_.
Currently we have:
@@ -34,7 +34,7 @@ Currently we have :
<ng-template #emptyList>The list is empty !!</ng-template>
```
We want to get rid of the ng-container by writing :
We want to get rid of the `ng-container` by writing:
```typescript
<div *ngFor="let person of persons; empty: emptyList">
@@ -43,4 +43,4 @@ We want to get rid of the ng-container by writing :
<ng-template #emptyList>The list is empty !!</ng-template>
```
The goal is to **improve the ngFor directive**
The goal is to **improve the ngFor directive**.

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@@ -17,9 +17,9 @@ However the context of **NgTemplateOutlet** type is **Object**. But with the hel
## Statement
In this exercice, we want to learn how to strongly type our ng-template in our AppComponent.
In this exercise, we want to learn how to strongly type our ng-template in our AppComponent.
This exercice has two levels of complexity.
This exercise has two levels of complexity.
### Level 1: known Interface

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@@ -0,0 +1,77 @@
---
title: 🔴 React in angular
description: Challenge 45 is about learning how to benefit from the numerous libraries in React
author: wandrille-guesdon
challengeNumber: 45
command: angular-react-in-angular
sidebar:
order: 209
badge: New
---
The goal of this challenge is to use a React component inside an Angular application.
Many components are available in React, and it can be interesting to use them in an Angular application. The goal is to create a React component and use it in an Angular application.
## Information
In this challenge, we have a simple application and a React component `ReactPost` in `app/react` to illustrate a React component from a library.
## Statement
- Your task is to display the posts with the React component `ReactPost`.
- When you select a post, the post should be highlighted.
In order to play with the React component, you should start by installing the React dependencies.
```bash
npm i --save react react-dom
npm i --save-dev @types/react @types/react-dom
```
## Constraints
- Do not transform the React component into an Angular component. The React component is pretty simple and can be written with ease in Angular. But **the goal is to use the React component**.
### Hint
<details>
<summary>Hint 1 - Configuration</summary>
Allow the React files in tsconfig.json
```
{
...
"compilerOptions": {
...
"jsx": "react"
},
...
}
```
</details>
<details>
<summary>Hint 2 - Initialization</summary>
Create a react root with `createRoot(...)`
</details>
<details>
<summary>Hint 3 - Display</summary>
To render the component, it should look like this:
```
<react root>.render(
<React.StrictMode>
...
</React.StrictMode>
)
```
</details>
<details>
<summary>Hint 4 - Design</summary>
Do not forget to allow the react file in Tailwind.
</details>

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@@ -14,7 +14,7 @@ Communicating and having a global/local state in sync with your backend is the h
## Statement
In this exercice, you have a small CRUD application, which get a list of TODOS, update and delete some todos.
In this exercise, you have a small CRUD application, which get a list of TODOS, update and delete some todos.
Currently we have a working example but filled with lots of bad practices.

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@@ -9,14 +9,27 @@ sidebar:
order: 3
---
The goal of this series of 3 pipe challenges is to master **pipe** in Angular.
Pure pipes are a very useful way to transform data from your template. The difference between calling a function and a pipe is that pure pipes are memoized. So they won't be recalculated every change detection cycle if their inputs haven't changed.
## Information
In this first exercice, you call a simple function inside your template. The goal is to convert it to a pipe.
This is the first of three `@Pipe()` challenges, the goal of this series is to master **pipes** in Angular.
Pipes are a very powerful way to transform data in your template. The difference between calling a function and a pipe is that pure pipes are memoized. So they won't be recalculated every change detection cycle if their inputs haven't changed.
Pipes are designed to be efficient and optimized for performance. They use change detection mechanisms to only recalculate the value if the input changes, to minimize unnecessary calculations and improving rendering performance.
By default a pipe is pure, you should be aware that setting `pure` to false is prone to be inefficient, because it increases the amount of rerenders.
:::note
A **pure** pipe is only called when the value changes.\
A **impure** pipe is called every change detection cycle.
:::
There are some useful predefined pipes like the DatePipe, UpperCasePipe and CurrencyPipe. To learn more about pipes in Angular, check the API documentation [here](https://angular.io/guide/pipes).
## Statement
In this exercise, you need to refactor a transform function inside a component, which is called inside your template. The goal is to convert this function to a pipe.
## Constraints
- must be strongly typed
- Must be strongly typed

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@@ -9,15 +9,28 @@ sidebar:
order: 103
---
The goal of this series of 3 pipe challenges is to master **pipe** in Angular.
## Information
Pure pipes are a very useful way to transform data from your template. The difference between calling a function and a pipe is that pure pipes are memoized. So they won't be recalculated every change detection cycle if their inputs haven't changed.
This is the second of three `@Pipe()` challenges, the goal of this series is to master **pipes** in Angular.
## Information:
Pipes are a very powerful way to transform data in your template. The difference between calling a function and a pipe is that pure pipes are memoized. So they won't be recalculated every change detection cycle if their inputs haven't changed.
In this second exercice, you are calling multiple functions inside your template. You can create a specific pipe for each of the functions but this will be too cumbersome.
Pipes are designed to be efficient and optimized for performance. They use change detection mechanisms to only recalculate the value if the input changes, to minimize unnecessary calculations and improving rendering performance.
By default a pipe is pure, you should be aware that setting `pure` to false is prone to be inefficient, because it increases the amount of rerenders.
:::note
A **pure** pipe is only called when the value changes.\
A **impure** pipe is called every change detection cycle.
:::
There are some useful predefined pipes like the DatePipe, UpperCasePipe and CurrencyPipe. To learn more about pipes in Angular, check the API documentation [here](https://angular.io/guide/pipes).
## Statement
In this exercise, you are calling multiple functions inside your template. You can create a specific pipe for each of the functions but this will be too cumbersome.
The goal is to create a `wrapFn` pipe to wrap your callback function though a pipe. Your function MUST remain inside your component. **`WrapFn` must be highly reusable.**
## Constraints:
- must be strongly typed
- Must be strongly typed

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@@ -9,7 +9,7 @@ sidebar:
order: 113
---
For this exercice, you will have a dashboard of activities displaying the name, the main teacher and a list of subtitutes.
For this exercise, you will have a dashboard of activities displaying the name, the main teacher and a list of subtitutes.
## Information

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@@ -13,7 +13,7 @@ hero:
icon: right-arrow
variant: primary
- text: Go to the latest Challenge
link: /challenges/angular/44-view-transition/
link: /challenges/angular/45-react-in-angular/
icon: rocket
- text: Give a star
link: https://github.com/tomalaforge/angular-challenges

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@@ -0,0 +1,46 @@
---
title: 🟠 Aprimoramento de Diretiva
description: Desafio 3 é sobre o aprimoramento de uma diretiva nativa
author: thomas-laforge
challengeNumber: 3
command: angular-ngfor-enhancement
blogLink: https://medium.com/@thomas.laforge/ngfor-enhancement-716b44656a6c
sidebar:
order: 101
---
:::note[Nota]
Este exercício pode ser obsoleto com o novo controle de fluxo e do bloco de empty state dentro do bloco `@for`. No entanto, **diretivas estruturais** não serão removidas tão cedo, por isso você ainda pode aprender bastante com este exercício.
:::
## Informação
Diretiva é uma ferramente poderosa oferecida pelo framework Angular. Você pode usar o princípio DRY compartilhando a lógica dentro de uma diretiva e aplicando ela em qualquer componente que quiser.
Mas a verdadeira vantagem é que você consegue melhorar uma diretiva pré-existente que não **pertence** a você.
## Declaração
Neste exercício, queremos mostrar uma lista de pessoas. Se a lista está vazio, você deve mostrar _" the list is empty !! "_.
Atualmente, temos:
```typescript
<ng-container *ngIf="persons.length > 0; else emptyList">
<div *ngFor="let person of persons">
{{ person.name }}
</div>
</ng-container>
<ng-template #emptyList>The list is empty !!</ng-template>
```
Queremos nos livrar do `ng-container` escrevendo:
```typescript
<div *ngFor="let person of persons; empty: emptyList">
{{ person.name }}
</div>
<ng-template #emptyList>The list is empty !!</ng-template>
```
Objetivo é **melhorar a diretiva ngFor**.

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@@ -6,7 +6,6 @@ challengeNumber: 44
command: angular-view-transition
sidebar:
order: 208
badge: New
---
## Informação