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allow the usage of a custom resize observer class #66

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allow the usage of a custom resize observer class #66

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33ef2c4
allow the usage of a custom resize observer class
javiergonzalezGenially Apr 5, 2021
2eb89e1
fix compilation
javiergonzalezGenially Apr 5, 2021
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6 changes: 4 additions & 2 deletions src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,7 @@ function useResizeObserver<T extends HTMLElement>(
opts: {
ref?: RefObject<T> | T | null | undefined;
onResize?: ResizeHandler;
customResizeObserver?: typeof ResizeObserver;
} = {}
): HookResponse<T> {
// Saving the callback as a ref. With this, I don't need to put onResize in the
Expand Down Expand Up @@ -143,7 +144,8 @@ function useResizeObserver<T extends HTMLElement>(
// Initialising the RO instance
if (!resizeObserverRef.current) {
// Saving a single instance, used by the hook from this point on.
resizeObserverRef.current = new ResizeObserver((entries) => {
const ResizeObserverClass = opts.customResizeObserver || ResizeObserver;
resizeObserverRef.current = new ResizeObserverClass((entries) => {
if (!Array.isArray(entries)) {
return;
}
Expand Down Expand Up @@ -177,7 +179,7 @@ function useResizeObserver<T extends HTMLElement>(
});
}

resizeObserverRef.current.observe(element);
resizeObserverRef.current!.observe(element);

return () => {
if (resizeObserverRef.current) {
Expand Down