src/vs/platform/log/common/bufferLog.ts/BufferLogService/logger
class BufferLogService:	set logger(logger: ILogger) {
		this._logger = logger;

		for (const { level, args } of this.buffer) {
			const fn = getLogFunction(logger, level);
			fn.apply(logger, args);
		}

		this.buffer = [];
	}