message: fix: properly handle switch cases surrounded by parens
  Fixes
diff: @@ -532,4 +532,18 @@ describe('switch', () => {
  });
  `);
  });
  +
  + it('handles a parenthesized switch case', () => {
  + check(`
  + switch a
  + when (b)
  + c
  + `, `
  + switch (a) {
  + case (b):
  + c;
  + break;
  + }
  + `);
  + });
  });
  