ng-logger-project

Installation

To install this library, run:

$ npm install ng-logger (--save)

Using the library

Once you have installed the library, follow the steps below:

Add to your global providers via the AppModule:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule, RequestOptions, XHRBackend } from '@angular/http';
import { Router, RouterModule } from '@angular/router';

import { AppComponent } from './app.component';
import { LoggerService } from 'ng-logger';

import { routing } from './app.routes';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    ChartModule,
    FormsModule,
    HttpModule,
    RouterModule,
    routing
  ],
  providers: [
    HttpClient,
    LoggerService
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

Then, from your Angular AppComponent:

import { Component, OnInit } from '@angular/core';
import { LoggerService } from 'ng-logger';

import { environment } from '../environments/environment';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  title = 'MyApp';

  constructor(
    private log: LoggerService)
  { }

  ngOnInit() {
    // set the configuration directly
    this.log.logLevel = 'DEBUG';
    this.log.

    // ..OR import the log level from your environment config (ng-cli for example)
    if (environment.logger) {
      this.log.logLevel = environment.logger.threshold;
      this.log.colorOutput = Boolean(environment.logger.colorOutput)
    }

    // ...OR import a config via object
    this.log.logConfig =  {
      threshold: 'DEBUG',
      colorOutput: true
    }

    // ..OR import the entire config from your environment
    this.log.logConfig = environment.logger;
    
    this.log.info('Log level set to: ', this.log.logLevel);
 }

}

Finally, import the logger into your components and log away:

import { Component, OnInit } from '@angular/core';

import { LoggerService } from 'ng-logger';

@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {

  constructor(private log: LoggerService) { }

  ngOnInit() {
    this.log.info('ngOnInit called!');
  }

  myFunction() {
    let myVar = 'test'
    this.log.debug('Logging works!:', myVar);
    this.log.info('Logging works!:', myVar);
    this.log.warn('Logging works!:', myVar);
    this.log.error('Logging works!:', myVar);
  }

}

The following log levels can be called: -DEBUG -INFO -WARN -ERROR

The following log thresholds can be set in the config: -DEBUG -INFO -WARN -ERROR -NONE

To enable / disable color coded logging, set colorOutput = false. (default: true)

License

MIT © Ralph Capasso colorOutput = false. (default: true)