Respect formatting in deno.lock

[valtlai]

I think deno.lock should follow the configured formatting.

For example, if I have the following deno.json:

{
  "fmt": {
    "useTabs": true
  }
}

then I want the generated deno.lock to use tabs instead of spaces for indentation.

This is to ensure the consistent code style. Currently I have to manually convert indentation to tabs every time deno.lock is updated.

Version: Deno 1.44.4

[dsherret]

The lockfile just happens to be json internally at the moment, but it's a .lock file (part of the reason it's a .lock file is so that it's excluded from formatting). I think needing to resolve the formatting configuration then running it through the formatter would be too much work to do because it should be as fast as possible. Not sure it's worth doing this one.

[LitoMore]

@dsherret It's fine for deno fmt to ingore this file. But other commands such as deno add, deno install should follow user's settings. Currently, the deno.lock will always 2-space indent even if the user set the useTabs: true.