Compare these two implementation in a chart format, and ultimately define which is best and why.

OPTION 1)
export function createAwaitableTimer(
  timeout: number,
  config: AwaitableTimerConfig = {},
): { timer: Timer; untilDone: Promise<AwaitableTimerResolution> } {
  // Set a default label if not provided
  const label = config.label || `awaitable-${nonce()}`;
  // Extract the handleVisibilityChange option
  const { handleVisibilityChange = true, ...timerConfig } = config;
  // Initialize the timer utility
  const timer = createTimer(timeout, { ...timerConfig, label: label });

  // Set the state of the awaitable timer promise
  let hiddenTimestamp: number | null = null;
  let resolvePromise: ((value: AwaitableTimerResolution) => void) | null;

  // Set a new promise whose resolution will be awaited and manually resolved
  const untilDone = new Promise<AwaitableTimerResolution>((resolve) => {
    resolvePromise = resolve;
  });

  // Cleanup function to clear event listeners
  const cleanup = (resolution: AwaitableTimerResolution) => {
    log.debug(`[${context}] [${label}]: resolved with: ${resolution.reason}`);
    // 1. remove the event listener
    document.removeEventListener('visibilitychange', onVisibilityChange);
    // 2. resolve the promise and clear the reference
    resolvePromise?.(resolution);
    resolvePromise = null;
  };

  /**
   * Handles visibility changes to account for time passed while hidden.
   */
  const onVisibilityChange = () => {
    const { status } = timer;
    if (status === TimerState.ABORTED || status === TimerState.EXPIRED) {
      return;
    }

    if (document.hidden && status === TimerState.RUNNING) {
      // Document became hidden - record timestamp
      hiddenTimestamp = Date.now();
      log.debug(
        `[${context}] [${label}]: Document hidden at ${hiddenTimestamp}.`,
      );
    } else if (
      !document.hidden &&
      hiddenTimestamp !== null &&
      status === TimerState.RUNNING
    ) {
      // Document became visible - adjust for time passed
      const hiddenDuration = Date.now() - hiddenTimestamp;
      
      log.debug(
        `[${context}] [${label}]: Document visible after ${hiddenDuration}ms hidden.`,
      );

      // Adjust the timer by negative duration to account for hidden time
      timer.adjust(-hiddenDuration);
      
      hiddenTimestamp = null;
    }
  };

  // Set up visibility handling
  if (handleVisibilityChange) {
    document.addEventListener('visibilitychange', onVisibilityChange);
  }

  // Set up event listeners
  timer.listen(ManagedTimerEvent.EXPIRE, (event) => {
    cleanup({
      reason: AwaitableTimerResolutionReason.EXPIRED,
      event,
    });
  });

  timer.listen(ManagedTimerEvent.ABORT, (event) => {
    cleanup({
      reason: AwaitableTimerResolutionReason.ABORTED,
      event,
    });
  });

  // Start the timer
  timer.start();
  log.debug(`[${context}] [${label}]: started.`);

  return { timer, untilDone };
}

OPTION 2)
import type { FromEnum } from '@/kernel/types';
import { nonce } from '@/kernel/utils/integrity';
import { ManagedTimerEvent, TimerState } from '@enums/timer.enums';
import type {
  Timer,
  TimerConfig,
  TimerEvent,
} from '@interfaces/timer.interfaces'; // Assuming Timer interface now includes 'adjust'
import { log } from '@utils/logger';
import { createTimer } from '@utils/timer';

const context = 'AWAITABLE_TIMER';

export const AwaitableTimerResolutionReason = Object.freeze({
  EXPIRED: 'EXPIRED',
  ABORTED: 'ABORTED',
});

export interface AwaitableTimerResolution {
  reason: FromEnum<typeof AwaitableTimerResolutionReason>;
  event?: TimerEvent;
}

export interface AwaitableTimerConfig extends TimerConfig {
  handleVisibilityChange?: boolean;
}

export function createAwaitableTimer(
  timeout: number,
  config: AwaitableTimerConfig = {},
): { timer: Timer; untilDone: Promise<AwaitableTimerResolution> } {
  // Set a default label if not provided
  const label = config.label || `awaitable-${nonce()}`;
  // Extract the handleVisibilityChange option
  const { handleVisibilityChange = true, ...timerConfig } = config;

  // Initialize the timer utility.
  // We can directly use the Timer type if 'adjust' is now part of it.
  // If not, a local interface extension (e.g., TimerWithAdjust) or casting would be needed.
  const timer = createTimer(timeout, { ...timerConfig, label: label });

  // State for visibility handling
  let pausedByVisibility = false;
  let lastHiddenTime: number | null = null; // Timestamp when the document went hidden

  // Set the state of the awaitable timer promise
  let resolvePromise: ((value: AwaitableTimerResolution) => void) | null;

  // Set a new promise whose resolution will be awaited and manually resolved
  const untilDone = new Promise<AwaitableTimerResolution>((resolve) => {
    resolvePromise = resolve;
  });

  // Cleanup function to clear event listeners and resolve the promise
  const cleanup = (resolution: AwaitableTimerResolution) => {
    log.debug(`[${context}] [${label}]: resolved with: ${resolution.reason}`);
    // 1. Remove the global event listener
    document.removeEventListener('visibilitychange', onVisibilityChange);
    // 2. Resolve the promise and clear the reference
    resolvePromise?.(resolution);
    resolvePromise = null;
    // No need to explicitly abort the timer here if the cleanup was triggered by EXPIRE/ABORT event,
    // as the timer has already transitioned to a final state.
  };

  /**
   * Handles visibility changes to pause or resume the timer,
   * accounting for elapsed time during hidden state using timer.adjust().
   */
  const onVisibilityChange = () => {
    const { status } = timer;
    if (status === TimerState.ABORTED || status === TimerState.EXPIRED) {
      log.debug(`[${context}] [${label}]: Visibility change ignored, timer is ${status}.`);
      return; // If the timer is already done, no need to handle visibility changes
    }

    if (document.hidden && status === TimerState.RUNNING) {
      // Document is hidden and timer is running, so pause it
      timer.pause();
      pausedByVisibility = true;
      lastHiddenTime = Date.now(); // Record when it went hidden
      log.debug(
        `[${context}] [${label}]: Paused by visibility change (hidden). Remaining: ${timer.remaining()}ms.`,
      );
    } else if (
      !document.hidden &&
      status === TimerState.PAUSED &&
      pausedByVisibility
    ) {
      // Document is visible, timer was paused due to visibility
      if (lastHiddenTime === null) {
        log.warn(`[${context}] [${label}]: 'lastHiddenTime' is null but timer was paused by visibility. Resuming normally.`);
        timer.start(); // Fallback to normal resume
        pausedByVisibility = false;
        return;
      }

      const idleDuration = Date.now() - lastHiddenTime; // Calculate time spent hidden
      lastHiddenTime = null; // Reset for next hidden period
      pausedByVisibility = false; // Reset flag

      log.debug(
        `[${context}] [${label}]: Resuming from visibility change (visible). Idle duration: ${idleDuration}ms.`,
      );

      // Adjust the timer's internal remaining time by subtracting the idle duration.
      // If remaining time becomes <= 0, timer.adjust() will automatically call its internal expire() function,
      // which in turn emits the EXPIRE event.
      timer.adjust(-idleDuration);

      // Check the timer's status after adjustment.
      // The `adjust` method updates `expireIn` but doesn't implicitly `start()` the timer if it was paused.
      // It will only set a new timeout/interval if the timer was running *before* the adjustment.
      // Since it was paused, we need to explicitly start it if it hasn't expired.
      if (timer.status === TimerState.PAUSED) {
        timer.start();
        log.debug(`[${context}] [${label}]: Resumed and started after adjustment.`);
      } else if (timer.status === TimerState.EXPIRED) {
        log.debug(`[${context}] [${label}]: Timer expired immediately upon adjustment.`);
        // The EXPIRE event listener will handle cleanup.
      } else if (timer.status === TimerState.ABORTED) {
        log.debug(`[${context}] [${label}]: Timer aborted immediately upon adjustment.`);
        // The ABORT event listener will handle cleanup.
      }
    }
  };

  // Set up visibility handling
  if (handleVisibilityChange) {
    document.addEventListener('visibilitychange', onVisibilityChange);
  }

  // Set up event listeners for the underlying timer to resolve the promise.
  // These listeners will be triggered by `timer.adjust()` if it causes expiration,
  // or by natural timer expiry/abort.
  timer.listen(ManagedTimerEvent.EXPIRE, (event) => {
    log.debug(`[${context}] [${label}]: Timer expired event received.`);
    cleanup({
      reason: AwaitableTimerResolutionReason.EXPIRED,
      event,
    });
  });

  timer.listen(ManagedTimerEvent.ABORT, (event) => {
    log.debug(`[${context}] [${label}]: Timer aborted event received.`);
    cleanup({
      reason: AwaitableTimerResolutionReason.ABORTED,
      event,
    });
  });

  // Start the timer
  timer.start();
  log.debug(`[${context}] [${label}]: started with timeout ${timeout}ms.`);

  // Return the actual timer instance and the promise
  return { timer, untilDone };
}