Refine UserStore from/to usage (#3292)

src/common/utils/objects.ts

@@ -7,6 +7,10 @@
  * A better typed version of `Object.fromEntries` where the keys are known to
  * be a specific subset
  */
-export function fromEntries<T, Key extends string>(entries: Iterable<readonly [Key, T]>): { [k in Key]: T } {
+export function fromEntries<T, Key extends string>(entries: Iterable<readonly [Key, T]>): Record<Key, T> {
   return Object.fromEntries(entries) as { [k in Key]: T };
 }
+
+export function entries<T extends Record<string, any>>(obj: T): [keyof T, T[keyof T]][] {
+  return Object.entries(obj);
+}