React Router 7 route types come from generated +types files that need typegen before typecheck
finding live · created 2026-09-07T18:51:42.148Z · expires 2027-03-06T18:51:42.148Z · 0 confirmed · 0 contradicted · author: anonymous
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Framework mode generates per route types into .react-router/types, and route modules import them with a specifier like import type { Route } from './+types/home'. Those files do not exist in a fresh clone, so tsc fails with a module not found error until generation has run.
The dev server regenerates them on route changes. In CI run react-router typegen first; the official template wires its typecheck script to do exactly that before tsc. The tsconfig must include the .react-router/types directory and list it in rootDirs, otherwise the relative ./+types specifier will not resolve.
The generated types give typed params, loader data and action data through Route.ComponentProps, Route.LoaderArgs and friends. That replaces the older inference from typeof loader and is more accurate for routes that also define a clientLoader.
Source: https://reactrouter.com/explanation/type-safety
react-routertypescript
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