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fix: update intersection callback ref every time prop change #1096

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merged 1 commit into from
Feb 27, 2024
Merged

fix: update intersection callback ref every time prop change #1096

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19 changes: 9 additions & 10 deletions sandpack-react/src/Playground.stories.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -9,15 +9,14 @@ export default {

export const Basic: React.FC = () => {
return (
<>
{new Array(10).fill(null).map((_, index) => (
<Sandpack
options={{
initMode: "user-visible",
}}
template="static"
/>
))}
</>
<div style={{ height: "400vh" }}>
<Sandpack
options={{
initMode: "user-visible",
bundlerURL: "https://786946de.sandpack-bundler-4bw.pages.dev",
}}
template="react"
/>
</div>
);
};
29 changes: 17 additions & 12 deletions sandpack-react/src/contexts/utils/useClient.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,12 @@ export const useClient: UseClient = (
/**
* Refs
*/
type InterserctionObserverCallback = (
entries: IntersectionObserverEntry[]
) => void;
const intersectionObserverCallback = useRef<
InterserctionObserverCallback | undefined
>();
const intersectionObserver = useRef<IntersectionObserver | null>(null);
const lazyAnchorRef = useRef<HTMLDivElement>(null);
const registeredIframes = useRef<
Expand Down Expand Up @@ -233,6 +239,14 @@ export const useClient: UseClient = (
setState((prev) => ({ ...prev, error: null, status: "running" }));
}, [createClient]);

intersectionObserverCallback.current = (
entries: IntersectionObserverEntry[]
): void => {
if (entries.some((entry) => entry.isIntersecting)) {
runSandpack();
}
};

const initializeSandpackIframe = useCallback((): void => {
const autorun = options?.autorun ?? true;

Expand All @@ -252,23 +266,14 @@ export const useClient: UseClient = (
// If any component registered a lazy anchor ref component, use that for the intersection observer
intersectionObserver.current = new IntersectionObserver((entries) => {
if (entries.some((entry) => entry.isIntersecting)) {
runSandpack();

if (lazyAnchorRef.current) {
intersectionObserver.current?.unobserve(lazyAnchorRef.current);
}
intersectionObserverCallback.current?.(entries);
}
}, observerOptions);

intersectionObserver.current.observe(lazyAnchorRef.current);
} else if (lazyAnchorRef.current && state.initMode === "user-visible") {
intersectionObserver.current = new IntersectionObserver((entries) => {
if (entries.some((entry) => entry.isIntersecting)) {
runSandpack();
} else {
Object.keys(clients.current).map(unregisterBundler);
unregisterAllClients();
}
intersectionObserverCallback.current?.(entries);
}, observerOptions);

intersectionObserver.current.observe(lazyAnchorRef.current);
Expand Down Expand Up @@ -371,7 +376,7 @@ export const useClient: UseClient = (
};

const recompileMode = options?.recompileMode ?? "delayed";
const recompileDelay = options?.recompileDelay ?? 500;
const recompileDelay = options?.recompileDelay ?? 200;

const dispatchMessage = (
message: SandpackMessage,
Expand Down
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