Method emitAt

packages/agent-core/src/logging/logger.ts:299–324

(
    level: Exclude<LogLevel, 'off'>,
    message: string,
    payload: LogPayload,
  )

  }

  private emitAt(
    level: Exclude<LogLevel, 'off'>,
    message: string,
    payload: LogPayload,
  ): void {
    const root = getRootInternal();
    if (!root.isConfigured()) return;
    try {
      const { ctx: payloadCtx, error } = resolvePayload(payload);
      // Bound ctx wins so call-site can't overwrite ownership fields.
      const ctx = mergeCtx(payloadCtx, this.boundCtx);
      const sessionId = ctx?.['sessionId'];
      const sessionLogId = (ctx as InternalLogContext | undefined)?.[SESSION_LOG_ID];
      root.emit({
        t: Date.now(),
        level,
        msg: message,
        ctx: stripInternalCtx(ctx),
        error,
        sessionId: typeof sessionId === 'string' ? sessionId : undefined,
        sessionLogId: typeof sessionLogId === 'string' ? sessionLogId : undefined,
      });
    } catch {
      // Diagnostic logging is best-effort and must never affect main control flow.
    }
  }
}

type InternalLogContext = LogContext & { [SESSION_LOG_ID]?: unknown };