Describe the bug

When formatting a large JSON file, and the current indentWidth is different from the target indentWidth, formatting the file will be stuck for a long time, and can be seen in the deno process CPU 100% utilization.

If config VSCode auto format when saving the file, it will block the SAVE operation, even after clicking SKIP it still doesn't work.

Note:

• No problem when formatting from stringify JSON files
• The problem only seems to occur when indentWidth is different
• The deno fmt 1.json command is fine. This only happens with the Deno-VSCode-Extension.
• There is no problem using VSCode's built-in formatting or Prettier extension
• I've reproduced the issue in at least 2 devices

To Reproduce

Please see attached demo project:

1. deno -W main.ts generates 1.json.
2. Format the 1.json (no problem)
3. Change the target indentWidth config
4. Format the 1.json file again

Steps 3-4 can be modified and tested repeatedly.

Screenshots

demo.zip

Versions

vscode: 1.99.3 deno: 2.3.1 extension: 3.44.1