hexagons = {
const hexagonsInside = h3.polyfill(
triangle.coordinates[0]
.slice(0, -1)
.map((d) => [d[1], d[0]])
.reverse(),
zoom
);
const hexagons = [...new Set(hexagonsInside.map(hex => h3.kRing(hex, 1)).flat())];
return h3
.h3SetToMultiPolygon(hexagons, true)
.map((hex) => [hex[0].reverse()]);
}