Reduce unused warnings in tests and helpers

src/parser/declarations/box_def/members/fields.rs

@@ -18,7 +18,7 @@ pub(crate) fn try_parse_header_first_field_or_property(
     fname: String,
     methods: &mut HashMap<String, ASTNode>,
     fields: &mut Vec<String>,
-    weak_fields: &mut Vec<String>,
+    _weak_fields: &mut Vec<String>,
 ) -> Result<bool, ParseError> {
     // Expect ':' Type after name
     if !p.match_token(&TokenType::COLON) {