chore: add external deepmerge utility

packages/utils/index.ts

@@ -18,5 +18,8 @@ export { millisToString } from './src/date-utils/millisToString.js';
 // time utils
 export { dayInMs, mts } from './src/timeConstants.js';
 
+// helpers from externals
+export { deepmerge } from './src/externals/deepmerge.js';
+
 // generic utilities
 export { isNumeric } from './src/types/types.js';

packages/utils/package.json

@@ -11,6 +11,7 @@
     "cleanup": "rm -rf .turbo && rm -rf node_modules"
   },
   "dependencies": {
+    "deepmerge-ts": "^5.1.0",
     "luxon": "^3.3.0",
     "nanoid": "^4.0.1"
   },