test.json

{
  "expression": ["distance", {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "MultiPolygon",
        "coordinates": [[[[103.88809204101563, 1.3621763466641713], [103.88465881347656, 1.3565131154538628], [103.8896369934082, 1.3535956881386369], [103.90422821044922, 1.3575427948432913], [103.90079498291016, 1.364064087445756], [103.88809204101563, 1.3621763466641713]]], [[[103.87899398803711, 1.3395233425123459], [103.87521743774414, 1.330256143886628], [103.8819122314453, 1.3275103005613949], [103.88998031616211, 1.3299129136379467], [103.89392852783203, 1.3369491241772669], [103.88757705688477, 1.341239486566936], [103.87899398803711, 1.3395233425123459]]], [[[103.91864776611328, 1.3503350299269142], [103.91469955444336, 1.3393517280407568], [103.92414093017578, 1.3324871393386304], [103.93529891967774, 1.335232977120653], [103.93667221069336, 1.3432988578436807], [103.93598556518555, 1.351021484651125], [103.91864776611328, 1.3503350299269142]]]]
      }
    }],
  "inputs": [[{
        "zoom": 13,
        "canonicalID": {
          "z": 13,
          "x": 6460,
          "y": 4065
        }
      }, {
        "geometry": {
          "type": "MultiPoint",
          "coordinates": [[103.89710426330567, 1.3539389150639312], [103.89427185058594, 1.3505924504712264], [103.8947868347168, 1.3469027533998386], [103.89315605163574, 1.342011750998951], [103.89813423156738, 1.33746396806039], [103.89504432678223, 1.3371207388169673], [103.89684677124024, 1.3424407866891553], [103.8907527923584, 1.3466453324652597], [103.90019416809082, 1.3497343818841974], [103.90122413635254, 1.346044683512217], [103.90088081359863, 1.341239486566936]]
        }
      }], [{
        "zoom": 13,
        "canonicalID": {
          "z": 13,
          "x": 6460,
          "y": 4065
        }
      }, {
        "geometry": {
          "type": "MultiPoint",
          "coordinates": [[103.9116096496582, 1.3415827152334823], [103.91263961791992, 1.3388797881819073], [103.91062259674072, 1.338021715478541], [103.9130687713623, 1.3377642936089936], [103.8913106918335, 1.3353616881914719]]
        }
      }]],
  "expected": {
    "outputs": [125.617, 0],
    "serialized": ["distance", {
        "properties": {},
        "geometry": {
          "type": "MultiPolygon",
          "coordinates": [[[[103.88809204101563, 1.3621763466641713], [103.88465881347656, 1.3565131154538628], [103.8896369934082, 1.3535956881386369], [103.90422821044922, 1.3575427948432913], [103.90079498291016, 1.364064087445756], [103.88809204101563, 1.3621763466641713]]], [[[103.87899398803711, 1.3395233425123459], [103.87521743774414, 1.330256143886628], [103.8819122314453, 1.3275103005613949], [103.88998031616211, 1.3299129136379467], [103.89392852783203, 1.3369491241772669], [103.88757705688477, 1.341239486566936], [103.87899398803711, 1.3395233425123459]]], [[[103.91864776611328, 1.3503350299269142], [103.91469955444336, 1.3393517280407568], [103.92414093017578, 1.3324871393386304], [103.93529891967774, 1.335232977120653], [103.93667221069336, 1.3432988578436807], [103.93598556518555, 1.351021484651125], [103.91864776611328, 1.3503350299269142]]]]
        },
        "type": "Feature"
      }],
    "compiled": {
      "type": "number",
      "isFeatureConstant": false,
      "isZoomConstant": true,
      "result": "success"
    }
  }
}