TypeError: Cannot read properties of undefined (reading 'composing')

[ivan-davy]

Greetings! I didn't manage to find a solution to this issue on my own, so I decided to report it separately to hopefully get an answer. App unexpectedly crashes with this error stack (acquired it using Sentry on production), seemingly at random:

TypeError: Cannot read properties of undefined (reading 'composing') at <object>.value(whiteboard-next/./node_modules/quill/dist/quill.js:5060:26) at <object>.value(whiteboard-next/./node_modules/quill/dist/quill.js:5116:26) at forEach(whiteboard-next/./node_modules/quill/dist/quill.js:7251:18) at Array.forEach(<anonymous>) at ScrollBlot.prototype.update(whiteboard-next/./node_modules/quill/dist/quill.js:7244:14) at <object>.value(whiteboard-next/./node_modules/quill/dist/quill.js:4331:99) at _this.observer(whiteboard-next/./node_modules/quill/dist/quill.js:7118:19)

I was unable to figure out the conditions under which the crash occurs, though I assume it's to do with text selecting/range. Please let me know if I can provide additional info to help resolve this.

• quilljs version: 1.3.7
• Browser & Version: Chrome (102, 109, 117), Yandex Browser.
• OS & Version: macOS (Catalina, Sonoma), Windows 10, Linux.

[benbro]

Please test with v2.0.0-beta.2

[luin]

I did see the exception in Sentry with 2.0 beta but haven't found a way to reproduce.

[kwbtdisk]

Faced the same error (with Vue 3.x SPA app) and the cause was <span class="ql-cursor">(.+)</span> in the content. I've changed this.$refs.myQuillEditor.getContents() to this.$refs.myQuillEditor.getContents()?.replace(/<span class="ql-cursor">(.+)<\/span>/g, '$1') to avoid this error