Make title optional.
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@@ -154,7 +154,7 @@
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const observeTitle = () => {
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const observeTitle = () => {
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const callback = ([entry]) => {
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const callback = ([entry]) => {
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title = entry.target.text;
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title = entry && entry.target ? entry.target.text : undefined;
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};
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};
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const observer = new MutationObserver(callback);
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const observer = new MutationObserver(callback);
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