I've recently been working with an old C++ codebase that formats every function call like this:

  Foo<Bar,Baz> value = some.method (1, 2, 3 + 4) ;
  // or with no parameters:
  value = some.method() ;

I've never seen it anywhere else, and it took me a good week to get used to it.

You might not have been writing JavaScript. For objects, spacing properties from curly brackets is pretty much the norm, Prettier does that by default. For lists I see it rarer but I personally use it instinctively for consistency with objects, especially with things like useState destructuring and ([ complex, ...splatting, ...combinations ]) into function calls (which admittedly becomes uncomfortably terse).

And here’re some fresh examples with lists just encountered in the wild: https://developer.matomo.org/guides/tracking-javascript-guid...

FWIW, I do "[ 1,2,3 ]". So we exist, perhaps you just haven't bumped into us :-)