From 03d4edbb085adc805fb3081649816e24a1833ea9 Mon Sep 17 00:00:00 2001
From: Marcello <marchsabino@gmail.com>
Date: Thu, 9 Jul 2026 15:01:57 -0400
Subject: [PATCH 1/2] Implement includesOnly function for collection comparison

Added a function to check if a collection contains exactly the specified values.
---
 src/core.ts | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/src/core.ts b/src/core.ts
index 7b773ca..bbde9f7 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -755,3 +755,42 @@ export function move<T>(list: T[], from: number, to: number): T[] {
   copy.splice(to, 0, item);
   return copy;
 }
+
+/**
+ * Checks whether a collection contains **exactly** the specified values.
+ *
+ * The order of values does not matter, but the set of values must match
+ * exactly. Duplicate values are ignored, since both the collection and the
+ * expected values are compared as sets.
+ *
+ * @template T The type of values in the collection.
+ * @param collection The collection to compare.
+ * @param values The expected values.
+ * @returns `true` if the collection contains exactly the specified values;
+ * otherwise, `false`.
+ *
+ * @example
+ * includesOnly([1], 1); // true
+ * includesOnly([1], 1, 2); // false
+ * includesOnly([2, 1], 1, 2); // true
+ * includesOnly(new Set(["a", "b"]), "b", "a"); // true
+ */
+export function includesOnly<T>(
+  collection: Iterable<T>,
+  ...values: T[]
+): boolean {
+  const actual = new Set(collection);
+  const expected = new Set(values);
+
+  if (actual.size !== expected.size) {
+    return false;
+  }
+
+  for (const value of actual) {
+    if (!expected.has(value)) {
+      return false;
+    }
+  }
+
+  return true;
+}

From 4e8b3651b0062312442aa106d78bb8b284e9d132 Mon Sep 17 00:00:00 2001
From: Marcello <marchsabino@gmail.com>
Date: Thu, 9 Jul 2026 15:02:14 -0400
Subject: [PATCH 2/2] Bump version from 2.1.0 to 2.2.0

---
 deno.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/deno.json b/deno.json
index 10d2603..a63001e 100644
--- a/deno.json
+++ b/deno.json
@@ -1,6 +1,6 @@
 {
   "name": "@bytebury/toolkit",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "exports": {
     ".": "./mod.ts",
     "./core": "./src/core.ts",