javascript compiler generates struct code with duplicate `case 0` statements

// test.thrift
struct Obj {
   1: string name;
}

service Test {
   Obj test()
}

thrift -r --gen js:node test.thrift

// part of Test.js
......
Test_test_result.prototype.read = function(input) {
  input.readStructBegin();
  while (true)
  {
    var ret = input.readFieldBegin();
    var fname = ret.fname;
    var ftype = ret.ftype;
    var fid = ret.fid;
    if (ftype == Thrift.Type.STOP) {
      break;
    }
    switch (fid)
    {
      case 0:
      if (ftype == Thrift.Type.STRUCT) {
        this.success = new ttypes.Obj();
        this.success.read(input);
      } else {
        input.skip(ftype);
      }
      break;
      case 0:
        input.skip(ftype);
        break;
      default:
        input.skip(ftype);
    }
    input.readFieldEnd();
  }
  input.readStructEnd();
  return;
};
......

if (fields.size() == 1) {
  // pseudo case to make jslint happy
  indent(out) << "case 0:" << endl;
  indent(out) << " input.skip(ftype);" << endl;
  indent(out) << " break;" << endl;
}