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

const x = n => {
  {
    var _do;
    switch (n) {
      case 0:
        if (true) {
          _do = 'out';
          break;
        }
    }
  }
  return _do;
};