typings: define types for timers binding

PR-URL: #40222
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>

tsconfig.json

@@ -7,6 +7,7 @@
     "./typings/internalBinding/messaging.d.ts",
     "./typings/internalBinding/options.d.ts",
     "./typings/internalBinding/serdes.d.ts",
+    "./typings/internalBinding/timers.d.ts",
     "./typings/internalBinding/util.d.ts",
     "./typings/internalBinding/worker.d.ts",
     "./typings/internalBinding.d.ts",

typings/internalBinding/timers.d.ts

@@ -0,0 +1,8 @@
+declare function InternalBinding(binding: 'timers'): {
+  getLibuvNow(): number;
+  setupTimers(immediateCallback: () => void, timersCallback: (now: number) => void): void;
+  scheduleTimer(msecs: number): void;
+  toggleTimerRef(value: boolean): void;
+  toggleImmediateRef(value: boolean): void;
+  immediateInfo: Uint32Array;
+};