Error Reference

Vite DevTools uses structured diagnostics to surface actionable warnings and errors at runtime. Each diagnostic has a unique error code, a human-readable message, and a link back to this documentation.

How error codes work

• Codes follow the pattern prefix + 4-digit number (e.g., DF0001, DTK0008, RDDT0002).
• Each prefix maps to a package: DTK for @vitejs/devtools (Vite-specific pieces), RDDT for @vitejs/devtools-rolldown. The framework-neutral devframe package documents its own DF-prefixed codes at the Devframe docs site.
• Every error page includes the cause, recommended fix, and a reference to the source file that emits it.
• The diagnostics system is powered by nostics, which provides structured diagnostic codes with docs URLs and ANSI-formatted console output.

DevTools Kit (DTK)

Emitted by @vitejs/devtools and @vitejs/devtools-kit.

Code	Level	Title
DTK0008	warn	Client Auth Disabled
DTK0010	warn	Experimental Static Build
DTK0011	error	RPC Function Error
DTK0012	error	RPC General Error
DTK0013	error	Unauthorized RPC Access
DTK0014	error	Plugin Setup Error
DTK0023	error	Vite Server Required
DTK0028	error	Path Outside Workspace Root
DTK0029	error	Path Outside Workspace Root
DTK0030	error	Dock Entry Not Found
DTK0031	error	Dock Entry Not a Launcher
DTK0032	error	Dock Launch Error

Hub-side diagnostics for docks, terminals, messages, and commands live upstream in @devframes/hub under the DF8xxx range — see the Devframe error reference.

Rolldown DevTools (RDDT)

Emitted by @vitejs/devtools-rolldown.

Code	Level	Title
RDDT0001	warn	Rolldown Logs Directory Not Found
RDDT0002	warn	Rolldown Log Reader Bad Line