docs:typescript

docs/data/charts/tooltip/generateVirtualElement.js

@@ -0,0 +1,37 @@
+/**
+ * Helper faking an element bounding box for the Popper.
+ */
+export function generateVirtualElement(mousePosition) {
+  if (mousePosition === null) {
+    return {
+      getBoundingClientRect: () => ({
+        width: 0,
+        height: 0,
+        x: 0,
+        y: 0,
+        top: 0,
+        right: 0,
+        bottom: 0,
+        left: 0,
+        toJSON: () => '',
+      }),
+    };
+  }
+  const { x, y } = mousePosition;
+  const boundingBox = {
+    width: 0,
+    height: 0,
+    x,
+    y,
+    top: y,
+    right: x,
+    bottom: y,
+    left: x,
+  };
+  return {
+    getBoundingClientRect: () => ({
+      ...boundingBox,
+      toJSON: () => JSON.stringify(boundingBox),
+    }),
+  };
+}