Error: Unable to pop() SweepEvent ... from queue.

[mfogel]

Performing a union on these 7 shapes results in the following error being thrown:

Error: Unable to pop() SweepEvent #4904 [18.1054406, 60.4686654] from queue. Please file a bug report.
    at Operation.run (/Users/mfogel/polygon-clipping/dist/polygon-clipping.cjs.js:1830:17)
    at Object.union (/Users/mfogel/polygon-clipping/dist/polygon-clipping.cjs.js:1861:20)

[mfogel]

Here's a simplified version of those shapes that still reproduces the error:

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": null,
      "geometry": {
        "type": "MultiPolygon",
        "coordinates": [
          [
            [
              [18.1054406, 60.4686654],
              [18.1052796, 60.4687447],
              [18.10553, 60.4685],
              [18.1054406, 60.4686654]
            ]
          ],
          [
            [
              [18.1054406, 60.4686654],
              [18.10536875, 60.46870078947205],
              [18.10542, 60.4685],
              [18.1054406, 60.4686654]
            ]
          ],
          [
            [
              [18.1054406, 60.4686654],
              [18.10557, 60.4687],
              [18.1052796, 60.4687447],
              [18.1054406, 60.4686654]
            ]
          ]
        ]
      }
    }
  ]
}