Thank you for this extension!
I was searching for a long time for this feature, and now I've found it =) https://stackoverflow.com/questions/48776478/how-to-work-with-big-multiline-strings-in-json-with-vscode/68142606
But there is one problem. If the "autosave" is enabled in VSCode then this extension is unusable. The window with the text is auto closed on the first change. (As far as I understand it, the "close" is made after the "save" and with "autosave" the "save" occures on every change)
I'm not sure how to fix this behaviour, but I would like to report this, to have an issue about it.
But even with this behaviour the extension is really good and I thank you for creating it! 😄