2 files changed, 12 insertions, 0 deletions
diff --git a/cli/tsc/dts/lib.deno.unstable.d.ts b/cli/tsc/dts/lib.deno.unstable.d.ts
index 4bc0fed45..9c4bd5d2c 100644
--- a/cli/tsc/dts/lib.deno.unstable.d.ts
+++ b/cli/tsc/dts/lib.deno.unstable.d.ts
@@ -1840,6 +1840,10 @@ declare namespace Deno {
      */
     mutate(...mutations: KvMutation[]): this;
     /**
+     * Shortcut for creating a sum mutation.
+     */
+    sum(key: KvKey, n: bigint): this;
+    /**
      * Add to the operation a mutation that sets the value of the specified key
      * to the specified value if all checks pass during the commit.
      */
diff --git a/ext/kv/01_db.ts b/ext/kv/01_db.ts
index 38dcb4ae0..16099c225 100644
--- a/ext/kv/01_db.ts
+++ b/ext/kv/01_db.ts
@@ -211,6 +211,14 @@ class AtomicOperation {
     return this;
   }
 
+  sum(key: Deno.KvKey, n: bigint): this {
+    return this.mutate({
+      type: "sum",
+      key,
+      value: new KvU64(n),
+    });
+  }
+
   mutate(...mutations: Deno.KvMutation[]): this {
     for (const mutation of mutations) {
       const key = mutation.key;