feat: modular domain driven boilerplate

modules/identity/event-store.ts

@@ -0,0 +1,54 @@
+import { container } from "@platform/database/container.ts";
+import { EventFactory, EventStore, Prettify, Projector } from "@valkyr/event-store";
+import { MongoAdapter } from "@valkyr/event-store/mongo";
+
+/*
+ |--------------------------------------------------------------------------------
+ | Event Factory
+ |--------------------------------------------------------------------------------
+ */
+
+const eventFactory = new EventFactory([
+  ...(await import("./events/code.ts")).default,
+  ...(await import("./events/identity.ts")).default,
+]);
+
+/*
+ |--------------------------------------------------------------------------------
+ | Event Store
+ |--------------------------------------------------------------------------------
+ */
+
+export const eventStore = new EventStore({
+  adapter: new MongoAdapter(() => container.get("mongo"), `identity:event-store`),
+  events: eventFactory,
+  snapshot: "auto",
+});
+
+/*
+ |--------------------------------------------------------------------------------
+ | Projector
+ |--------------------------------------------------------------------------------
+ */
+
+export const projector = new Projector<EventStoreFactory>();
+
+eventStore.onEventsInserted(async (records, { batch }) => {
+  if (batch !== undefined) {
+    await projector.pushMany(batch, records);
+  } else {
+    for (const record of records) {
+      await projector.push(record, { hydrated: false, outdated: false });
+    }
+  }
+});
+
+/*
+ |--------------------------------------------------------------------------------
+ | Events
+ |--------------------------------------------------------------------------------
+ */
+
+export type EventStoreFactory = typeof eventFactory;
+
+export type EventRecord = Prettify<EventStoreFactory["$events"][number]["$record"]>;