web_lib

Common web application libraries
git clone https://radroots.dev/git/web_lib.git
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geohash.ts (913B)

      1 import { decodeBase32, encodeBase32 } from "geohashing";
      2 import type { GeolocationPoint, LocationPoint } from "./types.js";
      3 
      4 export const geohash_encode = (opts: {
      5     lat: string | number;
      6     lng: string | number;
      7 }): string => {
      8     const lat = typeof opts.lat === "string" ? parseFloat(opts.lat) : opts.lat;
      9     const lng = typeof opts.lng === "string" ? parseFloat(opts.lng) : opts.lng;
     10     const geohash = encodeBase32(lat, lng);
     11     return geohash;
     12 };
     13 
     14 export const geohash_decode = (geohash: string): LocationPoint => {
     15     const { lat, lng, error: { lat: lat_err, lng: lng_err } } = decodeBase32(geohash);
     16     return {
     17         lat,
     18         lng,
     19         error: {
     20             lat: lat_err,
     21             lng: lng_err,
     22         },
     23     };
     24 };
     25 
     26 export const location_geohash = (point: GeolocationPoint): string => {
     27     const { lat, lng } = point;
     28     const res = geohash_encode({ lat, lng });
     29     return res;
     30 };