Function swc_ecma_transforms_testing::test_transform

pub fn test_transform<F, P>(
    syntax: Syntax, 
    tr: F, 
    input: &str, 
    expected: &str, 
    _always_ok_if_code_eq: bool
) where
    F: FnOnce(&mut Tester<'_>) -> P,
    P: Fold,