Vite "[vite]: Build failed with errors" - Diagnose the Real Cause

"Build failed with errors" is Vite's umbrella message; the real failure - a parse error, an unresolved import, or a plugin throwing - is in the lines around it. Read those, not the summary.

What this error means

vite build ends with [vite]: Build failed with errors and a non-zero exit, with one or more specific errors printed just above (Rollup resolve failure, esbuild transform error, or a plugin error).

vite

vite v5.2.0 building for production...
✗ 42 modules transformed.
src/pages/Home.tsx (12:8): ERROR: Expected ">" but found "className"
[vite]: Build failed with errors.
error during build:

Common causes

A transform or syntax error in a module

esbuild (Vite's transformer) hit invalid syntax or JSX in a .ts file. The umbrella message hides the specific file/line printed above it.

An unresolved import or failing plugin

A Rollup resolve failure or a plugin throwing during the build rolls up into the generic "Build failed" line.

How to fix it

Read the specific error above the summary

Scroll up from "Build failed with errors" to the first ✗/ERROR line - it names the file, line, and real cause.
Fix that underlying error (syntax, import, or plugin) rather than the summary.
Re-run vite build locally to confirm the specific error is gone.

Reproduce with full logs

Run the build verbosely so the underlying error is not truncated in CI output.

Terminal

vite build --debug
# or temporarily: DEBUG=vite:* vite build

How to prevent it

Run vite build in CI so production-only failures surface before deploy.
Keep JSX in .tsx/.jsx so the esbuild transform picks the right loader.
Treat the umbrella message as a pointer - always read the specific error above it.