vite Errors

8 error patterns

Node.js process variable in browser bundle

ReferenceError.*process is not defined|process\.env.*undefined.*browser

•Use import.meta.env instead of process.env in Vite projects
•Add define: { 'process.env': {} } to vite.config.ts for compatibility

Vite dependency pre-bundling error

vite.*pre-bundling.*error|Dependency pre-bundling.*failed|optimizeDeps

•Delete node_modules/.vite and restart dev server
•Add problematic package to optimizeDeps.include in vite.config.ts

Vite/Rollup plugin not found or misconfigured

Plugin.*not found|Unknown plugin|Cannot find plugin

•Install the plugin package: npm install -D @vitejs/plugin-react
•Check that plugins array in vite.config.ts calls the plugin function: plugin()

Web Worker build/bundling error

Error.*worker|Worker.*not supported|SharedWorker.*error

•Use new Worker(new URL('./worker.ts', import.meta.url)) syntax for Vite
•For webpack, use worker-loader or asset modules type: 'asset/resource'

Named export not found in module

export.*not found|does not provide an export named

•Check the package uses named exports — may need default import instead
•For CJS packages in Vite, add to optimizeDeps.include for proper ESM wrapping

TypeScript errors blocking production build

TS.*error.*during build|Type error.*build failed

•Fix type errors — Vite uses tsc for type checking in build mode
•Use vite-plugin-checker for non-blocking type errors during dev

Build entry point not found

Could not resolve.*entry|rollup.*input.*missing|Entry module.*cannot be.*found

•Check build.rollupOptions.input path matches your entry HTML/JS file
•Verify root option in vite.config.ts points to correct directory

Path alias not resolving in build

Cannot.*resolve.*path.*alias|alias.*not.*resolving|@\/.*not found

•Configure resolve.alias in vite.config.ts AND paths in tsconfig.json
•Use vite-tsconfig-paths plugin to auto-sync tsconfig paths