@koakh/typescript-simple-logger

README

a simple logger implementation, without dependencies...

Links

• GitHub
• NPM

Usage

use like that

add to .env

# logLevel
LOG_LEVEL=DEBUG,INFO,WARN,ERROR

• c3edu.online:/home/c3/c3-lexactivator/lerna-monorepo/packages/cryptlex-lexactivator-api/src/config/constants.ts
• c3edu.online:/home/c3/c3-system-core/src/app/constants.ts

// env constants
export const LOG_LEVEL: LogLevel = (process.env.LOG_LEVEL) ? getEnumKeyFromEnumValue(LogLevel, process.env.LOG_LEVEL) : `${LogLevel.INFO},${LogLevel.WARN},${LogLevel.ERROR}`;

• c3edu.online:/home/c3/c3-lexactivator/lerna-monorepo/packages/cryptlex-lexactivator-api/src/app.ts

import { Logger, LogLevel } from '@koakh/typescript-simple-logger';

export class App {
  // static
  public static log(logLevel: LogLevel, message: string | object) {
    App.logger.log(logLevel, message);
  }
  
  ...

  // private
  private static logger: Logger = new Logger(
    // require to pass a callback function, this way we can change the log level at runtime
    () => { return App.getState()?.app?.logLevel || LOG_LEVEL }
    , LOG_FILE_PATH, LOG_USE_COLOR
  );
  
  ...

  // example of usage
  constructor() {
    App.log(LogLevel.INFO, 'some message');
  }
}

export const getStateLogLevel = (): LogLevel => {
  return App.getState()?.app?.logLevel || LOG_LEVEL;
}

// init App
export default new App();