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fix: Adds check for changedTouches (#5869)

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alschmiedt
2022-01-25 14:50:00 -08:00
committed by GitHub
parent 5d7c890243
commit 3f4f505791
1 changed files with 1 additions and 1 deletions
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2
core/touch.js
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@@ -217,7 +217,7 @@ exports.checkTouchIdentifier = checkTouchIdentifier;
* @alias Blockly.Touch.setClientFromTouch
*/
const setClientFromTouch = function(e) {
if (utilsString.startsWith(e.type, 'touch')) {
if (utilsString.startsWith(e.type, 'touch') && e.changedTouches) {
// Map the touch event's properties to the event.
const touchPoint = e.changedTouches[0];
e.clientX = touchPoint.clientX;