ref as prop pattern

No forwardRef usage

ComponentPropsWithoutRef

useActionState for form

No useFormState

isPending from useActionState

'use client' directive

'use server' directive

Specific event types

Discriminated union for Button

ReactNode for children

Generic type parameter

keyof T for columns

Render prop on columns

keyExtractor pattern

Constrained generic

Render prop on ItemList

ReactNode for rendering

as const for hook return

Explicit useState generic

SelectDropdown generic

No any types

as const on useToggle

Context null guard

createContext with null

Discriminated union actions

Typed reducer function

Mutable ref for timeout

Explicit useState generic

ReactNode for children

Notification type union

No any types

Proper ref cleanup

'use server' directive

'use client' directives

No directive mixing

page.tsx is server component

useActionState for form

useOptimistic for toggle

Promise handoff without await

Specific event types

Server action prevState param

Typed form state

No any types

validateSearch with Zod

Zod search param types

createRoute usage

Typed loader function

useLoaderData with from

useSearch with from

useParams with from

Type-safe navigation

Route tree construction

getParentRoute defined

$param syntax