Encode as geohash

package-lock.json

@@ -1246,6 +1246,11 @@
       "integrity": "sha1-GVoh1sRuNh0vsSgbo4uR6d9727M=",
       "optional": true
     },
+    "ngeohash": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/ngeohash/-/ngeohash-0.6.3.tgz",
+      "integrity": "sha512-kltF0cOxgx1AbmVzKxYZaoB0aj7mOxZeHaerEtQV0YaqnkXNq26WWqMmJ6lTqShYxVRWZ/mwvvTrNeOwdslWiw=="
+    },
     "nise": {
       "version": "1.4.10",
       "resolved": "https://registry.npmjs.org/nise/-/nise-1.4.10.tgz",

package.json

@@ -24,6 +24,7 @@
     "julian-gregorian": "^1.0.0",
     "juliandate": "^1.0.0",
     "momentjs": "^2.0.0",
+    "ngeohash": "^0.6.3",
     "node-cleanup": "^2.1.2",
     "node-rdkafka": "^2.6.1",
     "ramda": "^0.25.0",

src/wiki-normalizer.ts

@@ -4,6 +4,7 @@ import {Transform} from 'stream';
 import {LoggerInstance} from 'winston';
 import {BootstrapWikidata} from './bootstrap-wikidata';
 import toDateObject from './wikidata_time_to_date_object';
+import geohash from 'ngeohash';
 
 class WikiNormalizer extends Transform {
   /**
@@ -66,7 +67,7 @@ class WikiNormalizer extends Transform {
         end: this.getEnd(obj),
         typology: this.getInstanceOf(obj),
         modification_date: `${date.getFullYear()}-${date.getMonth()}-${date.getDate()}`,
-        location: `${lat},${lon}`,
+        location: geohash.encode(lat, lon, 9),
       };
     } catch (err) {
       this.logger.error(`Transformer Error`);