Revert change

Author: KyleAMathews

docs/overview.md

@@ -575,9 +575,6 @@ insert([
   { text: "Buy groceries", completed: false },
   { text: "Walk dog", completed: false },
 ])
-
-// Insert with custom key
-insert({ text: "Buy groceries" }, { key: "grocery-task" })
 ```
 
 ##### `update`

packages/db-collections/src/local-only.ts

@@ -224,10 +224,9 @@ export function localOnlyCollectionOptions<
  * @param initialData - Optional array of initial items to populate the collection
  * @returns Object with sync configuration and confirmOperationsSync function
  */
-function createLocalOnlySync<
-  T extends object,
-  TKey extends string | number = string | number,
->(initialData?: Array<T>) {
+function createLocalOnlySync<T extends object, TKey extends string | number>(
+  initialData?: Array<T>
+) {
   // Capture sync functions for transaction confirmation
   let syncBegin: (() => void) | null = null
   let syncWrite: ((message: { type: OperationType; value: T }) => void) | null =