import { difference, Polygon } from "@turf/turf";

const area1 = {
  type: "Polygon",
  coordinates: [
    [
      [
        11.79926,
        59.307999
      ],
      [
        18.80383,
        60.15596
      ],
      [
        18.73765340635914,
        60.23951348693759
      ],
      [
        18.58133,
        60.34301
      ],
      [
        11.79926,
        59.307999
      ]
    ]
  ]
};

const area1_subtract = {
  type: "Polygon",
  coordinates: [
    [
      [
        11.79926,
        59.307999
      ],
      [
        18.80383,
        60.15596
      ],
      [
        18.73765340635913, // Subtract 1 to final digit
        60.23951348693759
      ],
      [
        18.58133,
        60.34301
      ],
      [
        11.79926,
        59.307999
      ]
    ]
  ]
};

const area1_add = {
  type: "Polygon",
  coordinates: [
    [
      [
        11.79926,
        59.307999
      ],
      [
        18.80383,
        60.15596
      ],
      [
        18.73765340635915, // Add 1 to final digit
        60.23951348693759
      ],
      [
        18.58133,
        60.34301
      ],
      [
        11.79926,
        59.307999
      ]
    ]
  ]
};

const area2 = {
  type: "Polygon",
  coordinates: [
    [
      [
        18.35554,
        60.35768
      ],
      [
        18.58133,
        60.34301
      ],
      [
        18.75959,
        60.22499
      ],
      [
        18.80383,
        60.15596
      ],
      [
        18.35554,
        60.35768
      ]
    ]
  ]
};



describe('Turfjs bug?', () => {
  it('difference broken', () => {
    difference(area1 as Polygon, area2 as Polygon)
  });
  it('works', () => {
    difference(area1_subtract as Polygon, area2 as Polygon)
  });
  it('works', () => {
    difference(area1_add as Polygon, area2 as Polygon)
  });
});