chore: import upstream snapshot with attribution

2026-07-13 13:32:57 +08:00
commit cd420f9332
4811 changed files with 884702 additions and 0 deletions
@@ -0,0 +1,32 @@
+import { EventEmitter } from "events";
+import { singleton } from "~/utils/singleton";
+
+export type SignalsEvents = {
+  SIGTERM: [
+    {
+      time: Date;
+      signal: NodeJS.Signals;
+    },
+  ];
+  SIGINT: [
+    {
+      time: Date;
+      signal: NodeJS.Signals;
+    },
+  ];
+};
+
+export type SignalsEventArgs<T extends keyof SignalsEvents> = SignalsEvents[T];
+
+export type SignalsEmitter = EventEmitter<SignalsEvents>;
+
+function initializeSignalsEmitter() {
+  const emitter = new EventEmitter<SignalsEvents>();
+
+  process.on("SIGTERM", () => emitter.emit("SIGTERM", { time: new Date(), signal: "SIGTERM" }));
+  process.on("SIGINT", () => emitter.emit("SIGINT", { time: new Date(), signal: "SIGINT" }));
+
+  return emitter;
+}
+
+export const signalsEmitter = singleton("signalsEmitter", initializeSignalsEmitter);