Derive TS type from JSON Schema

So we don't define (almost) the same schema twice

src/places.ts

@@ -1,53 +1,43 @@
 import BaseClient from 'remotestoragejs/release/types/baseclient';
 import Geohash from 'latlon-geohash';
 import { ulid } from 'ulid';
+import { FromSchema } from 'json-schema-to-ts';
 
-interface Place {
-  id: string;
-  title: string;
-  lat: number;
-  lon: number;
-  geohash: string;
-  zoom?: number;
-  url?: string;
-  osmId?: string;
-  osmType?: string;
-  osmTags?: Record<string, string>;
-  description?: string;
-  tags?: string[];
-  createdAt: string;
-  updatedAt?: string;
-  [key: string]: any;
-}
+const placeSchema = {
+  type: 'object',
+  properties: {
+    id: { type: 'string' },
+    title: { type: 'string' },
+    lat: { type: 'number' },
+    lon: { type: 'number' },
+    geohash: { type: 'string' },
+    zoom: { type: 'number' },
+    url: { type: 'string' },
+    osmId: { type: 'string' },
+    osmType: { type: 'string' },
+    osmTags: {
+      type: 'object',
+      additionalProperties: { type: 'string' },
+    },
+    description: { type: 'string' },
+    tags: {
+      type: 'array',
+      items: { type: 'string' },
+      default: [],
+    },
+    createdAt: { type: 'string', format: 'date-time' },
+    updatedAt: { type: 'string', format: 'date-time' },
+  },
+  required: ['id', 'title', 'lat', 'lon', 'geohash', 'createdAt'],
+} as const;
+
+type Place = FromSchema<typeof placeSchema> & { [key: string]: any };
 
 const Places = function (
   privateClient: BaseClient /*, publicClient: BaseClient */
 ) {
   // Define Schema
-  privateClient.declareType('place', {
-    type: 'object',
-    properties: {
-      id: { type: 'string', required: true },
-      title: { type: 'string', required: true },
-      lat: { type: 'number', required: true },
-      lon: { type: 'number', required: true },
-      geohash: { type: 'string', required: true },
-      zoom: { type: 'number' },
-      url: { type: 'string' },
-      osmId: { type: 'string' },
-      osmType: { type: 'string' },
-      osmTags: { type: 'object' },
-      description: { type: 'string' },
-      tags: {
-        type: 'array',
-        items: { type: 'string' },
-        default: [],
-      },
-      createdAt: { type: 'string', format: 'date-time', required: true },
-      updatedAt: { type: 'string', format: 'date-time' },
-    },
-    required: ['id', 'title', 'lat', 'lon', 'geohash', 'createdAt'],
-  });
+  privateClient.declareType('place', placeSchema as any);
 
   // Helper to normalize place object
   function preparePlace(data: Partial<Place>): Place {
@@ -70,6 +60,7 @@ const Places = function (
       lon,
       geohash,
       title,
+      tags: data.tags || [],
       createdAt: data.createdAt || now,
       updatedAt: data.id ? now : undefined,
     };