codex-team / codex-team/editor.js
[Bug] Switching to readonly mode with an empty editor
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Description
Describe a bug.
If you switch the editor to read-only mode after initialization, an error appears:
`System.Exception: Cannot read property 'holder' of undefined`
```
togglePreviewVisibility(visible: boolean) {
this._editor.readOnly.toggle(visible); // this._editor.blocks.getBlocksCount() === 0
this.previewVisible = visible;
}
```
Editor.js version: 2.22.0
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