A TypeScript decorator for classes that logs all method usages using the debug package. Logging is enabled using the DEBUG environment variable – see the debug package for details.

The decorator can be used directly and it will log to a namespace matching the class name it is decorating. An execution of new HelloWorld().main('World') below will result in HelloWorld main("World"); being logged.

import DebugLogging from '@cameronhunter/debug-logger';

@DebugLogging
class HelloWorld {
  main(name: string) {
    console.log(`Hello ${name}!`);
  }
}

The decorator also accepts an optional namespace that will be used in addition to the class name it is decorating. An execution of new HelloWorld().main('World') below will result in my-debug-namespace:HelloWorld main("World"); being logged.

import DebugLogging from '@cameronhunter/debug-logger';

@DebugLogging('my-debug-namespace')
class HelloWorld {
  main(name: string) {
    console.log(`Hello ${name}!`);
  }
}

The decorator can be preconfigured and shared. For example, we can configure a debug logger with a custom namespace and export it for use around an application. An execution of new HelloWorld().main('World') below will result in my-namespace:HelloWorld main("World"); being logged.

import DebugLogger from '@cameronhunter/debug-logger';

const CustomLogger = DebugLogger('my-namespace');

@CustomLogger
class HelloWorld {
  main(name: string) {
    console.log(`Hello ${name}!`);
  }
}