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

const x = (n) => do {
  switch (n) {
    case 0: 
      { "a"; }
      { "b"; };
    case 1: 
      { "c"; }
      break;
      { "d"; };
    case 2: 
      "a";
      "b";
    case 3:
      {}
      { break; }
    case 4:
      { "a"; }
      { "b"; }
    case 5:
      "c";
    case 6:
      {}
    case 7:
  }
}