Test in strict mode

src/Chart.tsx

@@ -30,21 +30,23 @@ export const Chart = forwardRef<ChartRef, ChartProps>((props, ref) => {
   const [init, setInit] = useState(false);
 
   useEffect(() => {
-    if (containerRef.current) {
-      chartRef.current = new G2Chart({
-        container: containerRef.current,
-        renderer,
-      });
-      setInit(true);
-    }
+    if (chartRef.current || !containerRef.current) return;
+    chartRef.current = new G2Chart({
+      container: containerRef.current,
+      renderer,
+    });
+    setInit(true);
     return () => {
-      if (chartRef.current) chartRef.current.destroy();
+      if (chartRef.current) {
+        chartRef.current.destroy();
+        chartRef.current = undefined;
+      }
     };
-  }, []);
+  }, [renderer]);
 
   useEffect(() => {
     if (init) onInit?.();
-  }, [init]);
+  }, [init, onInit]);
 
   useEffect(() => {
     if (chartRef.current && options) {

test/demos/render.tsx

@@ -1,11 +1,15 @@
-import React from "react";
+import React, { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
 
 export function render(Demo) {
   return () => {
     const container = document.createElement("div");
     const root = createRoot(container);
-    root.render(<Demo />);
+    root.render(
+      <StrictMode>
+        <Demo />
+      </StrictMode>
+    );
     return container;
   };
 }