sync

node_modules/@react-leaflet/core/lib/element.js

@@ -0,0 +1,34 @@
+import { useEffect, useRef } from 'react';
+export function createElementObject(instance, context, container) {
+    return Object.freeze({
+        instance,
+        context,
+        container
+    });
+}
+export function createElementHook(createElement, updateElement) {
+    if (updateElement == null) {
+        return function useImmutableLeafletElement(props, context) {
+            const elementRef = useRef();
+            if (!elementRef.current) elementRef.current = createElement(props, context);
+            return elementRef;
+        };
+    }
+    return function useMutableLeafletElement(props, context) {
+        const elementRef = useRef();
+        if (!elementRef.current) elementRef.current = createElement(props, context);
+        const propsRef = useRef(props);
+        const { instance  } = elementRef.current;
+        useEffect(function updateElementProps() {
+            if (propsRef.current !== props) {
+                updateElement(instance, props, propsRef.current);
+                propsRef.current = props;
+            }
+        }, [
+            instance,
+            props,
+            context
+        ]);
+        return elementRef;
+    };
+}