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-rw-r--r--lib/dom_utils.coffee2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/dom_utils.coffee b/lib/dom_utils.coffee
index e6616f51..690d9969 100644
--- a/lib/dom_utils.coffee
+++ b/lib/dom_utils.coffee
@@ -345,7 +345,7 @@ DomUtils =
# If the element is rendered in a shadow DOM via a <content> element, the <content> element will be
# returned, so the shadow DOM is traversed rather than passed over.
getContainingElement: (element) ->
- element.getDestinationInsertionPoints()[0] or element.parentElement
+ element.getDestinationInsertionPoints?()[0] or element.parentElement
# This tests whether a window is too small to be useful.
windowIsTooSmall: ->