I tend to agree re: wrangler.jsonc. While I applaud wrangler supporting more config formats, toml has been the standard for such a long time across blogs, third-party tutorials, video series, etc. going back until wrangler v1 in 2019, including Cloudflare's own videos like their popular "Workers 101" course: https://youtu.be/H7Qe96fqg1M?t=1532.

re: .editorconfig though, this is a very useful file. Not only can you define end_of_line and many editors will follow it (as well as it Github's UI), which is really nice in teams that work across Windows + Linux, but more importantly you can define indent_style. Lots of Cloudflare repos use tabs for indentation because they're objectively the right choice, so it's nice to be able to configure this easily across the board, but then also override yaml or other files that use inaccessible whitespace back to spaces. A common .editorconfig might look like this:

# https://editorconfig.org
root = true

[*]
end_of_line = lf
indent_style = tab

[*.{yml,yaml}]
indent_style = space
indent_size = 2

PS. This would probably make more sense in the workers-sdk repo: https://github.com/cloudflare/workers-sdk

The new jsonc format as a default makes me sad and afraid. 😢