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

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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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