closure

src/frontend/lexer.rs

@@ -29,6 +29,7 @@ fn get_keyword_token(word: &str) -> Option<TokenType> {
         "in" => Some(TokenType::In),
         "print" => Some(TokenType::Print),
         "return" => Some(TokenType::Return),
+        "break" => Some(TokenType::Break),
         "super" => Some(TokenType::Super),
         "this" => Some(TokenType::This),
         "true" => Some(TokenType::True),