Fix error when the notes plugin receives a non-string message #3588
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It seems the React dev tools also trigger
'message'
events, which pollutes the console with errors (about 2-3 every second).This is especially problematic when developing a presentation with
react-scripts start
, as each error causes a full overlay on the speaker view.The error is caused by the attempt to JSON-parse the event body, and is fixed with a try/catch in
onPostMessage()
.