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Angular Logger\n\n\nApplication example built with [Angular](https://angular.io/) 15 and adding the log component using the [ngx-logger](https://www.npmjs.com/package/ngx-logger) library.\n\nThis tutorial was posted on my [blog](https://rodrigo.kamada.com.br/blog/adicionando-o-componente-de-log-em-uma-aplicacao-angular) in portuguese and on the [DEV Community](https://dev.to/rodrigokamada/adding-the-log-component-to-an-angular-application-49f9) in english.\n\n\n\n[![Website](https://shields.braskam.com/v1/shields?name=website\u0026format=rectangle\u0026size=small\u0026radius=5)](https://rodrigo.kamada.com.br)\n[![LinkedIn](https://shields.braskam.com/v1/shields?name=linkedin\u0026format=rectangle\u0026size=small\u0026radius=5)](https://www.linkedin.com/in/rodrigokamada)\n[![Twitter](https://shields.braskam.com/v1/shields?name=twitter\u0026format=rectangle\u0026size=small\u0026radius=5\u0026socialAccount=rodrigokamada)](https://twitter.com/rodrigokamada)\n[![Instagram](https://shields.braskam.com/v1/shields?name=instagram\u0026format=rectangle\u0026size=small\u0026radius=5)](https://www.instagram.com/rodrigokamada)\n\n\n\n## Prerequisites\n\n\nBefore you start, you need to install and configure the tools:\n\n* [git](https://git-scm.com/)\n* [Node.js and npm](https://nodejs.org/)\n* [Angular CLI](https://angular.io/cli)\n* IDE (e.g. [Visual Studio Code](https://code.visualstudio.com/))\n\n\n\n## Getting started\n\n\n### Create the Angular application\n\n\n**1.** Let's create the application with the Angular base structure using the `@angular/cli` with the route file and the SCSS style format.\n\n```shell\nng new angular-logger\n? Would you like to add Angular routing? Yes\n? Which stylesheet format would you like to use? SCSS   [ https://sass-lang.com/documentation/syntax#scss                ]\nCREATE angular-logger/README.md (1059 bytes)\nCREATE angular-logger/.editorconfig (274 bytes)\nCREATE angular-logger/.gitignore (604 bytes)\nCREATE angular-logger/angular.json (3255 bytes)\nCREATE angular-logger/package.json (1076 bytes)\nCREATE angular-logger/tsconfig.json (783 bytes)\nCREATE angular-logger/.browserslistrc (703 bytes)\nCREATE angular-logger/karma.conf.js (1431 bytes)\nCREATE angular-logger/tsconfig.app.json (287 bytes)\nCREATE angular-logger/tsconfig.spec.json (333 bytes)\nCREATE angular-logger/src/favicon.ico (948 bytes)\nCREATE angular-logger/src/index.html (299 bytes)\nCREATE angular-logger/src/main.ts (372 bytes)\nCREATE angular-logger/src/polyfills.ts (2820 bytes)\nCREATE angular-logger/src/styles.scss (80 bytes)\nCREATE angular-logger/src/test.ts (788 bytes)\nCREATE angular-logger/src/assets/.gitkeep (0 bytes)\nCREATE angular-logger/src/environments/environment.prod.ts (51 bytes)\nCREATE angular-logger/src/environments/environment.ts (658 bytes)\nCREATE angular-logger/src/app/app-routing.module.ts (245 bytes)\nCREATE angular-logger/src/app/app.module.ts (393 bytes)\nCREATE angular-logger/src/app/app.component.scss (0 bytes)\nCREATE angular-logger/src/app/app.component.html (24617 bytes)\nCREATE angular-logger/src/app/app.component.spec.ts (1097 bytes)\nCREATE angular-logger/src/app/app.component.ts (219 bytes)\n✔ Packages installed successfully.\n```\n\n**2.** Install and configure the Bootstrap CSS framework. Do steps 2 and 3 of the post *[Adding the Bootstrap CSS framework to an Angular application](https://github.com/rodrigokamada/angular-bootstrap)*.\n\n**3.** Configure the log settings in the `src/environments/environment.ts` and `src/environments/environment.prod.ts` files as below.\n\n```typescript\nlogger: {\n  level: 'TRACE',\n},\n```\n\n**4.** Install the `ngx-logger` library.\n\n```shell\nnpm install ngx-logger\n```\n\n**5.** Import the `HttpClientModule` and `LoggerModule` modules. Configure the log settings. Change the `app.module.ts` file and add the lines as below.\n\n```typescript\nimport { HttpClientModule } from '@angular/common/http';\nimport { LoggerModule, NgxLoggerLevel } from 'ngx-logger';\n\nimport { environment } from '../environments/environment';\n\nconst environmentConfig: any = environment.logger;\n\nimports: [\n  BrowserModule,\n  HttpClientModule,\n  LoggerModule.forRoot({\n    level: NgxLoggerLevel[environmentConfig.level],\n    serverLogLevel: NgxLoggerLevel[environmentConfig.serverLevel],\n    serverLoggingUrl: environmentConfig.serverUrl,\n  } as any),\n  AppRoutingModule,\n],\n```\n\n**6.** Remove the contents of the `AppComponent` class from the `src/app/app.component.ts` file. Import the `NGXLogger` service and create the log levels methods as below.\n\n```typescript\nimport { Component } from '@angular/core';\nimport { NGXLogger } from 'ngx-logger';\n\n@Component({\n  selector: 'app-root',\n  templateUrl: './app.component.html',\n  styleUrls: ['./app.component.scss'],\n})\nexport class AppComponent {\n\n  constructor(private logger: NGXLogger) {\n  }\n\n  public showTrace(): void {\n    this.logger.trace('TRACE level');\n  }\n\n  public showDebug(): void {\n    this.logger.debug('DEBUG level');\n  }\n\n  public showInfo(): void {\n    this.logger.info('INFO level');\n  }\n\n  public showWarn(): void {\n    this.logger.warn('WARN level');\n  }\n\n  public showError(): void {\n    this.logger.error('ERROR level');\n  }\n\n  public showFatal(): void {\n    this.logger.fatal('FATAL level');\n  }\n\n}\n```\n\n**7.** Remove the contents of the `src/app/app.component.html` file. Add the log levels buttons as below.\n\n```html\n\u003cdiv class=\"container-fluid py-3\"\u003e\n  \u003ch1\u003eAngular Logger\u003c/h1\u003e\n  \u003cdiv class=\"d-grid gap-2 col-4 mt-4 mx-auto\"\u003e\n    \u003cbutton type=\"button\" class=\"btn btn-sm btn-primary\" (click)=\"showTrace()\"\u003eTrace\u003c/button\u003e\n    \u003cbutton type=\"button\" class=\"btn btn-sm btn-success\" (click)=\"showDebug()\"\u003eDebug\u003c/button\u003e\n    \u003cbutton type=\"button\" class=\"btn btn-sm btn-info\" (click)=\"showInfo()\"\u003eInfo\u003c/button\u003e\n    \u003cbutton type=\"button\" class=\"btn btn-sm btn-warning\" (click)=\"showWarn()\"\u003eWarn\u003c/button\u003e\n    \u003cbutton type=\"button\" class=\"btn btn-sm btn-danger\" (click)=\"showError()\"\u003eError\u003c/button\u003e\n    \u003cbutton type=\"button\" class=\"btn btn-sm btn-secondary\" (click)=\"showFatal()\"\u003eFatal\u003c/button\u003e\n  \u003c/div\u003e\n  \u003cp class=\"mt-4 text-center\"\u003e\n    \u003cspan class=\"fw-bold me-1\"\u003eNote:\u003c/span\u003e\n    \u003cspan class=\"fst-italic\"\u003eSee the messages displayed in the browser console.\u003c/span\u003e\n  \u003c/p\u003e\n\u003c/div\u003e\n```\n\n**8.** Run the application with the command below.\n\n```shell\nnpm start\n\n\u003e angular-logger@1.0.0 start\n\u003e ng serve\n\n✔ Browser application bundle generation complete.\n\nInitial Chunk Files | Names         |      Size\nvendor.js           | vendor        |   2.55 MB\nstyles.css          | styles        | 266.58 kB\npolyfills.js        | polyfills     | 128.51 kB\nscripts.js          | scripts       |  76.67 kB\nmain.js             | main          |  14.41 kB\nruntime.js          | runtime       |   6.63 kB\n\n                    | Initial Total |   3.03 MB\n\nBuild at: 2021-09-04T19:25:20.982Z - Hash: dcc562d0e20cf029eab3 - Time: 12067ms\n\n** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **\n\n\n✔ Compiled successfully.\n```\n\n**9.** Ready! Access the URL `http://localhost:4200/` and check if the application is working. See the application working on [GitHub Pages](https://rodrigokamada.github.io/angular-logger/) and [Stackblitz](https://stackblitz.com/edit/angular15-logger).\n\n![Angular Logger](https://res.cloudinary.com/rodrigokamada/image/upload/v1637686964/Blog/angular-logger/angular-logger.png)\n\n\n\n## Cloning the application\n\n**1.** Clone the repository.\n\n```shell\ngit clone git@github.com:rodrigokamada/angular-logger.git\n```\n\n**2.** Install the dependencies.\n\n```shell\nnpm ci\n```\n\n**3.** Run the application.\n\n```shell\nnpm start\n```\n","funding_links":["https://github.com/sponsors/rodrigokamada"],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frodrigokamada%2Fangular-logger","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frodrigokamada%2Fangular-logger","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frodrigokamada%2Fangular-logger/lists"}