chore: initialize from frontend template 4dc033c

src/adapters/platform/system-clock.ts

@@ -0,0 +1,24 @@
+import type { ClockPort } from "../../application/ports/clock-port.ts";
+
+export const systemClock: ClockPort = Object.freeze({
+  now: () => Date.now(),
+  sleep(milliseconds, signal) {
+    return new Promise((resolve, reject) => {
+      if (signal?.aborted) {
+        reject(signal.reason);
+        return;
+      }
+
+      const timer = setTimeout(() => {
+        signal?.removeEventListener("abort", onAbort);
+        resolve();
+      }, milliseconds);
+      const onAbort = () => {
+        clearTimeout(timer);
+        signal?.removeEventListener("abort", onAbort);
+        reject(signal?.reason);
+      };
+      signal?.addEventListener("abort", onAbort, { once: true });
+    });
+  },
+});