Remove parentheses of sequence expressions breaks code

[fisker]

Prettier 1.19.1
Playground link

--parser babel

Input:

export default (1, 2);

Output:

export default 1, 2;

Second Output:

SyntaxError: Unexpected token, expected ";" (1:17)
> 1 | export default 1, 2;
    |                 ^
  2 | 

Expected behavior:

A case found in #7470

[armano2]

note: this issue is present in babel, jest and typescript, and its related to estree/estree#193

[alexander-akait]

Fixed in next

[thorn0]

Are issues not closed automatically because PRs target next, not master, or is GitHub broken?

[alexander-akait]

Honestly, I do not know, maybe this really only works for the master, need to write in support

[thorn0]

I wrote yesterday, No answer so far.