Cursor performance

Bundle Size Increased After Cursor Refactoring

Your application's bundle size has significantly increased after Cursor refactored the code. Load times are now slow, especially on slower networks and mobile devices.

The refactored code may be importing unused dependencies or breaking code splitting.

Error Messages You Might See

High bundle size Slow initial load High memory usage Large chunk size
High bundle sizeSlow initial loadHigh memory usageLarge chunk size

Common Causes

  1. Large library imported entirely instead of specific functions (lodash vs lodash/map)
  2. Code splitting disabled during refactoring
  3. Tree shaking not working due to import structure changes
  4. New heavy dependencies added without considering alternatives
  5. Asset inlining or image compression removed

How to Fix It

Analyze bundle: webpack-bundle-analyzer. Import specific functions: import {map} from 'lodash' not import lodash. Enable code splitting: splitChunks in webpack. Check for unused packages: npm ls --depth=0. Use lightweight alternatives (lodash-es vs lodash).

Real developers can help you.

Matthew Butler Matthew Butler Systems Development Engineer @ Amazon Web Services AUXLE AUXLE I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies. Krishna Sai Kuncha Krishna Sai Kuncha Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : ) zipking zipking I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify. As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value. Caio Rodrigues Caio Rodrigues I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures. I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations. Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization. I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems. My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.** Victor Denisov Victor Denisov Developer Stanislav Prigodich Stanislav Prigodich 15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it. Richard McSorley Richard McSorley Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures. Meïr Ankri Meïr Ankri Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.

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Frequently Asked Questions

How do I measure bundle size?

Use webpack-bundle-analyzer plugin or build tools. Check npm package size with bundlephobia.com. Monitor in CI.

What's code splitting?

Splitting bundle into chunks that load on demand. Routes load when accessed. Dynamic imports: import('module').then().

Related Cursor Issues

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