Reactive utilities

startTransition

Solid 2.0 —

startTransition has been removed in Solid 2.0. Transitions are now a built-in scheduling concept managed by the runtime. Use <Loading> boundaries and isPending() for transition UI.

Replacement

// 1.x
import { startTransition } from "solid-js"
startTransition(() => setSignal(newValue))

// 2.0 — just update the signal; transitions are automatic
setSignal(newValue)

// For pending UI during async revalidation:
import { isPending } from "solid-js"
const pending = () => isPending(() => asyncMemo())

For mutations with optimistic UI, see action().

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