Function with_file_parser

pub fn with_file_parser<T>(
    fm: &SourceFile,
    syntax: Syntax,
    target: EsVersion,
    comments: Option<&dyn Comments>,
    recovered_errors: &mut Vec<Error>,
    op: impl for<'aa> FnOnce(&mut Parser<Lexer<'_>>) -> PResult<T>,
) -> PResult<T>