babel/packages/babel-plugin-proposal-do-expressions/test/fixtures/do-expression-switch-case/fallthrough-last/output.js

const x = n => {
  {
    var _do;
    switch (n) {
      case 0:
        'a';
      case 1:
        _do = 'b';
        break;
      default:
        'd';
      case 2:
        _do = 'c';
      case 3:
      case 4:
    }
  }
  return _do;
};