Bug: deno fmt doesn't format function arguments

[marvinhagemeister]

Input code:

function foo(
  arg: string,
): string {
  return arg;
}

Formatted output:

function foo(
  arg: string,
): string {
  return arg;
}

Expected output:

function foo(arg: string): string {
  return arg;
}

Version: Deno 1.41.3

[bartlomieju]

This is correct - deno fmt preserves these new lines on purpose. If you change the example to:

function foo(arg: string,
): string {
  return arg;
}

It will format as you expect.

[dsherret]

Let's track this in #7868