perf: remove opAsync (#21690)

`opAsync` requires a lookup by name on each async call. This is a
mechanical translation of all opAsync calls to ensureFastOps.

The `opAsync` API on Deno.core will be removed at a later time.

1 files changed, 5 insertions, 2 deletions

diff --git a/cli/tests/unit/cron_test.ts b/cli/tests/unit/cron_test.ts
index 2a146bcfa..8c484af32 100644
--- a/cli/tests/unit/cron_test.ts
+++ b/cli/tests/unit/cron_test.ts
@@ -1,9 +1,12 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 import { assertEquals, assertThrows } from "./test_util.ts";
-import {
+
+// @ts-ignore This is not publicly typed namespace, but it's there for sure.
+const {
   formatToCronSchedule,
   parseScheduleToString,
-} from "../../../ext/cron/01_cron.ts";
+  // @ts-expect-error TypeScript (as of 3.7) does not support indexing namespaces by symbol
+} = Deno[Deno.internal];
 
 const sleep = (time: number) => new Promise((r) => setTimeout(r, time));