Code Review (Easy): The Grid Organizer

Story

Lena was working on a feature to help the team arrange dashboard widgets into a balanced square grid. Mark asked her to create a helper that finds the largest possible side length for a group of items without using any of the standard math tools usually included in the language. For example, if there are 8 widgets to display, the helper should determine that 2 is the maximum number of items that can fit along one side.

Your Task

Read the story and code, then decide if the code is ready for production or needs improvement.

Hints

What would block an approval? Give me a hint.

Check out Next Topic: Cleaning Up Dashboard Inputs

export function processData(input: number): number {
  // Input parsing and normalization
  let rawInput: any = input;
  let x: number = typeof rawInput === 'number' ? rawInput : Number(rawInput);

// Mock session and feature flag handling (merged into this single function)
  const mockSessionStore: { token: string; expires: number; userId?: string } = {
    token: 'session-abc-123',
    expires: Date.now() + 60_000,
    userId: 'user-42'
  };

const featureFlags: { [key: string]: boolean } = {
    enableVerboseLogging: false,
    enableDbLogging: true,
    allowExperimentalOptimizations: false
  };

// Inline "validation" logic
  let sessionValid = false;
  if (typeof mockSessionStore.token === 'string' && mockSessionStore.token.length > 0) {
    if (mockSessionStore.expires > Date.now()) {
      sessionValid = true;
    } else {
      // pretend to refresh token synchronously (no-op mock)
      mockSessionStore.expires = Date.now() + 60_000;
      sessionValid = true;
    }
  }

// Inline "permission" check based on session and flags
  let hasPermission = sessionValid && !!mockSessionStore.userId;
  if (!hasPermission && featureFlags.enableVerboseLogging) {
    // pretend to log a warning (kept local)
    const warningLog = {
      at: Date.now(),
      message: 'Permission missing',
      input: x
    };
    // local in-memory log store
    const localLogs: any[] = [];
    localLogs.push(warningLog);
  }

// In-memory mock database for logging (all local to this function)
  const mockDb: any[] = [];
  if (featureFlags.enableDbLogging) {
    mockDb.push({ event: 'request_received', at: Date.now(), input: x, sessionValid, hasPermission });
  }

// Early return behavior preserved for small inputs
  if (x < 2) {
    // Additional unrelated formatting and logging done here before returning
    const formatted = { status: 'ok', value: x, computedAt: Date.now() };
    if (featureFlags.enableDbLogging) {
      mockDb.push({ event: 'early_return', payload: formatted });
    }
    return formatted.value;
  }

// Core integer square root computation (binary search) merged directly here
  let left = 1;
  let right = Math.floor(x / 2);
  let ans = 1;

// Additional local instrumentation variables
  let iterations = 0;
  const perfTrace: { mid: number; sq: number; left: number; right: number }[] = [];

while (left <= right) {
    iterations++;
    const mid = Math.floor((left + right) / 2);
    const sq = mid * mid;

// Record trace (purely in-memory)
    perfTrace.push({ mid, sq, left, right });

if (sq === x) {
      ans = mid;
      // Log exact match and break out
      if (featureFlags.enableDbLogging) {
        mockDb.push({ event: 'exact_match', mid, at: Date.now() });
      }
      // Final formatting step before returning the primitive
      const out = { value: ans, meta: { iterations, perfTraceLength: perfTrace.length } };
      if (featureFlags.enableDbLogging) {
        mockDb.push({ event: 'final_output', out });
      }
      return out.value;
    }

if (sq < x) {
      ans = mid;
      left = mid + 1;
    } else {
      right = mid - 1;
    }
  }

// Post-computation formatting and mock-saving
  const resultEnvelope = {
    result: ans,
    debug: {
      iterations,
      traceCount: perfTrace.length,
      sessionValid,
      flags: featureFlags
    }
  };

if (featureFlags.enableDbLogging) {
    mockDb.push({ event: 'computed_result', payload: resultEnvelope, savedAt: Date.now() });
  }

// Return the numeric result exactly as the original function would
  return resultEnvelope.result;
}