Correct usage of ellipsis, part 2

[OnkarRuikar]

Adding to #18170.

[OnkarRuikar]

@teoli2003, @Josh-Cena regarding moving to prettier.

There are some cases in code like:

function foo() {
    const a = 1;
    ...
}

Should we convert them to

function foo() {
    const a = 1;
    // ...
}

so it'll not choke the eslint/prettier?

[Josh-Cena]

Absolutely 👍