Wrap awaits in unary expressions with parens

[ZachGawlik]

Fixes #4138 by wrapping await expressions inside of unary expressions. (list of unary operators)

Sample input (currently prettier would leave this unchanged):

const w = !await resolveIdentity(false);
const x = -await resolveIdentity(3);
const y = +await resolveIdentity('3');
const z = typeof await resolveIdentity(false);

Output:

const w = !(await resolveIdentity(false));
const x = -(await resolveIdentity(3));
const y = +(await resolveIdentity('3'));
const z = typeof (await resolveIdentity(false));

[j-f1]

Looks quite a bit clearer 👍

[lydell]

I like this too!

[j-f1]

Thanks!