Bolt deployment

ESLint Error Blocking Build - Build Fails on Lint

Your build fails because of ESLint warnings/errors. Code is correct but linter complains and build exits.

Works locally with warnings but deployment fails on lint.

Error Messages You Might See

Build failed - ESLint error Error: 'variable' is defined but never used Error: Missing 'key' prop Error: Rules of Hooks violation
Build failed - ESLint errorError: 'variable' is defined but never usedError: Missing 'key' propError: Rules of Hooks violation

Common Causes

  1. ESLint strict mode enabled in build (treatWarningsAsErrors)
  2. Unused variables or imports flagged as errors
  3. Rules too strict for development environment
  4. ESLint config different between local and deployment
  5. Missing eslintrc file in deployment environment

How to Fix It

Check next.config.js: eslint setting controls build behavior

Disable during development: eslint: { ignoreDuringBuilds: true }

Fix actual issues: remove unused imports, follow rule suggestions

Override specific rules in .eslintrc if they're too strict

Or: add // eslint-disable-next-line above problematic lines as last resort

Real developers can help you.

Daniel Vázquez Daniel Vázquez Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting. Victor Denisov Victor Denisov Developer 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.** Antriksh Narang Antriksh Narang 5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies. Matthew Butler Matthew Butler Systems Development Engineer @ Amazon Web Services Luca Liberati Luca Liberati I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture Vlad Temian Vlad Temian 15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox). Cursor ambassador and agentic tooling builder. I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti. I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks. https://blog.vtemian.com/ 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. BurnHavoc BurnHavoc Been around fixing other peoples code for 20 years. Nam Tran Nam Tran 10 years as fullstack developer

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Frequently Asked Questions

Should I disable ESLint for build?

No, fix the actual issues. ESLint catches real bugs. ignoreDuringBuilds is temporary workaround

What's // eslint-disable-next-line for?

Suppresses single rule for one line. Use sparingly - better to fix actual issue

How do I customize ESLint rules?

Edit .eslintrc file. Set rules to 'off', 'warn', or 'error'. Or extend shared configs

Related Bolt Issues

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