chore: bump version to 0.1.0-alpha.6 and update OptionalGenerator return type

Author: ebrahimmfadae

packages/deepcover/package.json

@@ -1,6 +1,6 @@
 {
   "name": "deepcover",
-  "version": "0.1.0-alpha.5",
+  "version": "0.1.0-alpha.6",
   "description": "",
   "type": "module",
   "scripts": {

packages/deepcover/src/permutation/modifiers/optional.ts

@@ -1,11 +1,15 @@
 import type {
 	PermutationGenerator,
+	UnwrapPermutation,
 	UnwrapPermutationGenerator,
 } from '#src/permutation/definitions';
 import { merge } from '#src/permutation/utils';
+import type { CastAsPermutationGenerator } from '#src/utils/casting';
+
+type UnwrapValue<T> = UnwrapPermutation<UnwrapPermutationGenerator<CastAsPermutationGenerator<T>>>;
 
 export type OptionalGenerator<out T extends PermutationGenerator = PermutationGenerator> =
-	() => Iterable<UnwrapPermutationGenerator<T>>;
+	() => Iterable<UnwrapValue<T>>;
 
 export type OptionalPatch<T extends PermutationGenerator = PermutationGenerator> = {
 	readonly size: T['size'];