Missing parentheses for ((async) of []);

[fisker]

This is valid even in main branch, related babel pr

Prettier 2.2.1
Playground link

--parser babel

Input:

for ((async) of []);

Output:

for (async of []);

Second Output:

SyntaxError: Unexpected token, expected "=>" (1:15)
> 1 | for (async of []);
    |               ^
  2 | 

Expected behavior:

[thorn0]

The parens are also needed in for ((let) of []); and for ((let.foo.bar) of []);.

See https://tc39.es/ecma262/#sec-for-in-and-for-of-statements