Nest / Angular shared Logger service https://github.com/nestjs/nest/issues/4487

AngularLogglyLogger.ts

import { Inject, Injectable, InjectionToken } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Logger, LogglyConfiguration, LOGGLY_CONFIG } from '@partenariat/logger';

@Injectable()
export class AngularLogglyLogger extends Logger {
  constructor(http: HttpClient, @Inject(LOGGLY_CONFIG) configuration: LogglyConfiguration) {
    super(http, configuration);
  }
}

Logger.ts

import { Observable } from 'rxjs';

export interface LogglyConfiguration {
  token: string;
  enabled: boolean;
  tags: string[];
  silent?: boolean;
}

export const LOGGLY_CONFIG = 'loggly.configuration';

export abstract class Logger {
  private url: string;

  constructor(
    private http: Partial<{
      post: (url: string, data: any) => Observable<any>;
    }>,
    private configuration: LogglyConfiguration
  ) {
    this.url = `https://logs-01.loggly.com/inputs/${
      configuration.token
    }/tag/${configuration.tags.join(',')}/`;
  }

  error(error: Error) {
    this.log(error.message, { stack: error.stack });
  }

  log(message: string, payload: any) {
    if (!this.configuration.silent) {
      console.error('Sending following log to loggly: ', message, payload);
    }

    if (!this.configuration.enabled) {
      return;
    }

    this.http.post(this.url, { message, payload }).subscribe({
      error: error => console.log('Error logging in loggly:', error)
    });
  }
}

NestLogglyLogger.ts

import { HttpService, Injectable, Inject } from '@nestjs/common';
import { Logger, LogglyConfiguration, LOGGLY_CONFIG } from '@logger/logger';

@Injectable()
export class NestLogglyLogger extends Logger {
  constructor(
    http: HttpService,
    @Inject(LOGGLY_CONFIG) configuration: LogglyConfiguration
  ) {
    super(http, configuration);
  }
}