Start auth framework

src/auth/event/UserFlushedEvent.ts

@@ -0,0 +1,27 @@
+import {Event} from '../../event/Event'
+import {SecurityContext} from '../SecurityContext'
+import {Awaitable, JSONState} from '../../util'
+import {Authenticatable} from '../types'
+
+/**
+ * Event fired when a user is unauthenticated.
+ */
+export class UserFlushedEvent extends Event {
+    constructor(
+        public readonly user: Authenticatable,
+        public readonly context: SecurityContext,
+    ) {
+        super()
+    }
+
+    async dehydrate(): Promise<JSONState> {
+        return {
+            user: await this.user.dehydrate(),
+            contextName: this.context.name,
+        }
+    }
+
+    rehydrate(state: JSONState): Awaitable<void> {  // eslint-disable-line @typescript-eslint/no-unused-vars
+        // TODO fill this in
+    }
+}