SolidJS•13mo ago

`ClientOnly` fallback

I found this code for a client that only runs on the client

function ClientOnly(props: { children: JSX.Element }) {
    const [ getRender, setRender ] = createSignal()
    onMount(() => setRender(() => props.children))
    return getRender as any as JSX.Element
}

function ClientOnly(props: { children: JSX.Element }) {
    const [ getRender, setRender ] = createSignal()
    onMount(() => setRender(() => props.children))
    return getRender as any as JSX.Element
}

but how can I get it to render a fallback?

3 Replies

thetarnav•13mo ago

you can modify the implementation like this:

function ClientOnly(props: { children: JSX.Element, fallback?: JSX.Element }) {
    const [mounted, setMounted] = createSignal(false)
    onMount(() => setRender(true))
    return <Show when={mounted()} fallback={props.fallback}>{props.children}</Show>
}

function ClientOnly(props: { children: JSX.Element, fallback?: JSX.Element }) {
    const [mounted, setMounted] = createSignal(false)
    onMount(() => setRender(true))
    return <Show when={mounted()} fallback={props.fallback}>{props.children}</Show>
}

or use isHydrated from solid-primitives to do this anywhere:

return <>{isHydrated() ? <Client/> : <Fallback/>}</>

return <>{isHydrated() ? <Client/> : <Fallback/>}</>

https://primitives.solidjs.community/package/lifecycle#ishydrated you may want to combine clientonly with lazy and Suspense for code splitting too

Samual 🦢•13mo ago

oo isHydrated() is cool, thanks what advantages does code splitting have in this context?

thetarnav•13mo ago

if some code is client-only than it's probably not critical enough to be loaded as soon as possible so code splitting will let the main bundle be downloaded and executed faster

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Programming

`ClientOnly` fallback