Troubleshooting

Symptom-first diagnosis for routes, contracts, URL state, React rendering, SSR, and code generation.

Start with the symptom

Troubleshooting is organized by what the application does wrong. The error reference is organized by exact message. Use the one that matches the evidence you actually have.

Routing

Matching, redirects, basename, constraints, slots, and intercepts.

Contracts

Stale generation and TypeScript inference.

URL state

Search, hash, defaults, dates, arrays, and unknown values.

React

Provider, hooks, fallbacks, and test warnings.

SSR

Startup, hydration, styles, and response mapping.

CLI and codegen

Extraction, path constraints, generated files, and stale builds.