Method onLog

src/shared/logging.ts:15–20

(listener: (message: LogMessage) => void)

		this.emit("log", msg);
	}
	public onLog(listener: (message: LogMessage) => void): IAmDisposable {
		this.on("log", listener);
		return {
			dispose: () => { this.removeListener("log", listener); },
		};
	}
}

export class EmittingLogger implements Logger, IAmDisposable {