Type alias logger

logger: {
    debug: logFn;
    error: logFn;
    extend?: ((name) => logger);
    info: logFn;
    warn: logFn;
}

debug: logFn
error: logFn
Optional extend?: ((name) => logger)
- - (name): logger
  - Parameters
    - name: string
    Returns logger
info: logFn
warn: logFn