feat(asyncAndOnce): add asyncAndOnce function

Author: djcsdy

index.test.ts

@@ -1,6 +1,7 @@
 import type {ExecutionContext} from "ava";
 import test from "ava";
 import {
+    asyncAndOnce,
     asyncAverageOnce,
     asyncContainsOnce,
     asyncDropOnce,
@@ -484,3 +485,9 @@ test("asyncAverageOnce", async t => {
     t.is(await asyncAverageOnce(asyncIterator([1, 2, 3, 2])), 2);
     t.is(await asyncAverageOnce(asyncIterator([])), null);
 });
+
+test("asyncAndOnce", async t => {
+    t.true(await asyncAndOnce(asyncIterator([true, true, true])));
+    t.false(await asyncAndOnce(asyncIterator([true, false, true])));
+    t.true(await asyncAndOnce(asyncIterator([])));
+});

index.ts

@@ -954,3 +954,7 @@ export async function asyncAverageOnce(
     );
     return count === 0 ? null : sum / count;
 }
+
+export async function asyncAndOnce(iterator: AsyncIteratorLike<boolean>): Promise<boolean> {
+    return (await asyncFindIndexOnce(iterator, element => !element)) == null;
+}