move helpers to new workspace folder

packages/helpers/pick.ts

@@ -0,0 +1,15 @@
+import type { LoosePick, UnknownRecord } from "./types"
+
+export function pick<T, K extends keyof T | PropertyKey>(
+  object: T,
+  keys: K[],
+): LoosePick<T, K> {
+  const result: any = {}
+  for (const key of keys) {
+    const value = (object as UnknownRecord)[key]
+    if (value !== undefined) {
+      result[key] = value
+    }
+  }
+  return result
+}