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Support d3.drag in testing environments
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Return early from nodrag if no view is passed.

Fixes d3#89
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penx committed Jan 27, 2023
1 parent c6a7e46 commit bfe249f
Showing 1 changed file with 3 additions and 0 deletions.
3 changes: 3 additions & 0 deletions src/nodrag.js
Original file line number Diff line number Diff line change
Expand Up @@ -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) {
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