23 lines
649 B
TypeScript
23 lines
649 B
TypeScript
import ngeohash from "ngeohash";
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const GEOHASH_DEPTH = 9; // put enough accuracy, radius will be used anyway
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export const coordsToGeoHash = (
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lat: number | undefined,
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lon: number | undefined,
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depth = GEOHASH_DEPTH
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): string | undefined => {
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if (lat && lon && depth) {
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return ngeohash.encode(lat, lon, GEOHASH_DEPTH);
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}
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return undefined;
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};
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export const geoHashToCoords = (
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geohash: string | undefined
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): { latitude: number; longitude: number } | undefined => {
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if (!geohash) return undefined;
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const { latitude, longitude } = ngeohash.decode(geohash);
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return latitude && longitude ? { latitude, longitude } : undefined;
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};
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