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Lesson 03Build a route tree from filesCreate issue list and detail pages, then connect file names, path params, and inferred types.

03

path / params

File routes and params

Connect file structure, path parameters, and Link through one type system.

Engineering doc / recipeCreate a file route with a path parameterCreate /posts/$postId in a React app and read the typed postId from the route instance.

Lesson 04Put filters in the URLBuild shareable, refresh-safe, typed issue filters with validated search params.

04

filters / pagination

Validated URL state

Put shareable, refresh-safe, navigable filter state into validated search params.

Engineering doc / recipeValidate pagination and filter search paramsTurn untrusted URL search params into stable, typed route input.

Lesson 07Contain errors in the right routeUse a global default as the safety net and route errorComponent to isolate local data or render failures.

07

errors / retry

Failure containment and recovery

Stop failures at the nearest route boundary and provide a stable recovery path.

Engineering doc / errorContain route loader and render errorsSet a Router-wide default and override errorComponent on routes that need independent recovery.

Lesson 09Pass dependencies through Router ContextDeclare typed dependencies at the root, then use beforeLoad to add inferred context for a route subtree.

09

context / beforeLoad

Typed route dependencies

Inject stable dependencies at the root and add inferred context to subtrees with beforeLoad.

Engineering doc / contractEstablish typed Router ContextDeclare dependencies at the root and use beforeLoad to add inferred derived context to a subtree.

Lesson 14Confirm identity before child routes loadProtect a route group with typed Router Context and a pathless layout beforeLoad while preserving the correct post-login destination.

14

beforeLoad / redirect

Auth gates and server authorization

Stop private child loading in a parent beforeLoad while preserving resource authorization at server data boundaries.

Engineering doc / recipeProtect a route subtree with beforeLoadRead typed auth context in a pathless layout, stop signed-out users before child loading, and preserve a constrained return URL.