Add null check in a while loop #10
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To avoid this error
```
index.js:459 Uncaught TypeError: Cannot read property 'nextSibling' of null
at rm (index.js:459)
at syncNodeInto (index.js:467)
at LineView.sync (index.js:317)
at LineView.sync (index.js:1245)
at DocView.sync (index.js:329)
at eval (index.js:1913)
at DOMObserver.ignore (index.js:4976)
at DocView.updateInner (index.js:1901)
at DocView.update (index.js:1892)
at EditorView.update (index.js:5503)
```
|
Closing on the assumption that the underlying issue is now fixed. |
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If
nextis null thenrm()will throw an unhandled error when it tries to get thenextSibilingof the dom. This may resolve https://discuss.codemirror.net/t/defaulthighlightstyle-and-markdown-cause-ime-error-when-atomic-widget-presents/3385