Support d3.drag in testing environments

Return early from nodrag if no view is passed. Fixes d3#89
penx · Jan 27, 2023 · bfe249f · bfe249f
1 parent c6a7e46
commit bfe249f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/nodrag.js b/src/nodrag.js
@@ -2,6 +2,9 @@ import {select} from "d3-selection";
 import noevent, {nonpassivecapture} from "./noevent.js";
 
 export default function(view) {
+ if(!view) {
+    return;
+  }
   var root = view.document.documentElement,
       selection = select(view).on("dragstart.drag", noevent, nonpassivecapture);
   if ("onselectstart" in root) {