Function swc_ecma_transforms::fixer

pub fn fixer(
    comments: Option<&'a (dyn Comments + 'a)>
) -> impl Fold + VisitMut + 'a

Fixes ast nodes before printing so semantics are preserved.

You don’t have to bother to create appropriate parenthesis. The pass will insert parenthesis as needed. In other words, it’s okay to store a * (b + c) as Bin { a * Bin { b + c } }.