Handle missing targets.

d3 · Jul 30, 2019 · 9bce1bd · 9bce1bd
1 parent 65c9592
commit 9bce1bd
Showing 1 changed file with 12 additions and 13 deletions.
diff --git a/src/pointer.js b/src/pointer.js
@@ -1,17 +1,16 @@
 export default function(event, node = event.currentTarget) {
-  var svg = node.ownerSVGElement || node;
-
-  if (svg.createSVGPoint) {
-    var point = svg.createSVGPoint();
-    point.x = event.clientX, point.y = event.clientY;
-    point = point.matrixTransform(node.getScreenCTM().inverse());
-    return [point.x, point.y];
+  if (node) {
+    var svg = node.ownerSVGElement || node;
+    if (svg.createSVGPoint) {
+      var point = svg.createSVGPoint();
+      point.x = event.clientX, point.y = event.clientY;
+      point = point.matrixTransform(node.getScreenCTM().inverse());
+      return [point.x, point.y];
+    }
+    if (node.getBoundingClientRect) {
+      var rect = node.getBoundingClientRect();
+      return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop];
+    }
   }
-
-  if (node.getBoundingClientRect) {
-    var rect = node.getBoundingClientRect();
-    return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop];
-  }
-
   return [event.pageX, event.pageY];
 }