{
  cellWidthSpec: "Fixed",
  cellWidth: 40,
  timeHeaders: [
    {
      groupBy: "Month",
    },
    {
      groupBy: "Day",
      format: "d",
    },
  ],
  scale: "Day",
  days: DayPilot.Date.today().daysInMonth(),
  startDate: DayPilot.Date.today().firstDayOfMonth(),
  taskHeight: 35,
  rowHeaderHideIconEnabled: false,
  rowMoveHandling: "Update",
  onRowMoved: (args) => {
    args.control.message("Row moved: " + args.source.text());
  },
  taskMoveHandling: "Update",
  onTaskMoved: (args) => {
    args.control.message("Task moved to: " + args.newStart);
  },
  linkCreateHandling: "Update",
  onLinkCreated: (args) => {
    args.control.message("Link created, type: " + args.type);
  },
  rowCreateHandling: "Enabled",
  onRowCreate: (args) => {
    const gantt = args.control;
    gantt.tasks.add({
      id: DayPilot.guid(),
      text: args.text,
      start: gantt.startDate,
      end: gantt.startDate.addDays(1)
    });
  },
}

[
  {
    "id": 1,
    "text": "Group 1",
    "complete": 35,
    "children": [
      {
        "id": 2,
        "start": "2025-05-04T00:00:00",
        "end": "2025-05-11T00:00:00",
        "text": "Task 1",
        "complete": 60
      },
      {
        "id": 3,
        "start": "2025-05-11T00:00:00",
        "end": "2025-05-16T00:00:00",
        "text": "Task 2",
        "complete": 0
      },
      {
        "id": 4,
        "start": "2025-05-16T00:00:00",
        "type": "Milestone",
        "text": "Milestone 1",
        "end": "2025-05-16T00:00:00"
      }
    ],
    "start": "2025-05-04T00:00:00",
    "end": "2025-05-16T00:00:00"
  }
]

[
  {
    "from": 2,
    "to": 3,
    "type": "FinishToStart"
  }
]