docs: def p_reserved_word(self, p):
          """reserved_word : BREAK
                           | CASE
                           | CATCH
                           | CONTINUE
                           | DEBUGGER
                           | DEFAULT
                           | DELETE
                           | DO
                           | ELSE
                           | FINALLY
                           | FOR
                           | FUNCTION
                           | IF
                           | IN
                           | INSTANCEOF
                           | NEW
                           | RETURN
                           | SWITCH
                           | THIS
                           | THROW
                           | TRY
                           | TYPEOF
                           | VAR
                           | VOID
                           | WHILE
                           | WITH
                           | NULL
                           | TRUE
                           | FALSE
                           | CLASS
                           | CONST
                           | ENUM
                           | EXPORT
                           | EXTENDS
                           | IMPORT
                           | SUPER
          """
          p[0] = self.asttypes.Identifier(p[1])
          p[0].setpos(p)