text: //// [restElementWithAssignmentPattern3.ts]
  var a: string, b: number;
  var tuple: [string, number] = ["", 1];
  [...[a, b = 0]] = tuple;
  
  //// [restElementWithAssignmentPattern3.js]
  var _a, _b;
  var a, b;
  var tuple = ["", 1];
  _a = tuple.slice(0), a = _a[0], _b = _a[1], b = _b === void 0 ? 0 : _b;
  