whitespace rule enhancements

[rcchen]

Create some sort of rule for maximum spacing between characters in a single line I think. For example,

public foo { // one space, all good

public foo  { // two spaces, this should be flagged

[adidahiya]

This should be an extension of the current whitespace rule, perhaps in the form of a "check-brace" option which checks for only 1 space before a {.

[glen-84]

@adidahiya It's not only for braces. Right now this is valid:

        if     (1)     {
            let x;
        }    else                 {
            let x;
        }

That looks quite awful. Perhaps each check-* should have a spaces integer which controls the number of spaces that must be used.

However, I would imagine that in 99% of cases, a single space is used/required, so another option would be to just add a single-spaces "global" option to enforce a single space in all cases except before an equals sign (as people often align assignments).

In a perfect world, it would be able to keep track of groups of assignments and report on misalignment, but that may not be simple.

[myitcv]

@rcchen @glen-84 rather than enforcing spacing rules (indeed formatting rules in general) by hand, you might be interested in tsfmt. It automatically formats code for you.

[unional]

named-function

function init() {}

// vs
function init () {}

[unional]

anonymous-function:

function() {}

// vs
function () {}

[glen-84]

@myitcv Thanks for the suggestion, but I'd prefer to use linting in this case.

[JoshuaKGoldberg]

Closing per #4534. Thanks for the discussion folks!