Merge branch 'master' into ft-using-keyof-operator-to-limit-parameter-type

Author: psmyrdek

package.json

@@ -10,7 +10,8 @@
     "test:only-one": "tsc src/only-one/only-one.ts && vitest src/only-one",
     "test:new-skills": "tsc src/new-skills/new-skills.ts && vitest src/new-skills",
     "test:constraints": "tsc src/constraints/constraints.ts && vitest src/constraints",
-    "test:type-operator": "tsc src/type-operator/type-operator.ts && vitest src/type-operator"
+    "test:type-operator": "tsc src/type-operator/type-operator.ts && vitest src/type-operator",
+    "test:subscriber": "tsc src/subscriber/subscriber.ts && vitest src/subscriber"
   },
   "repository": {
     "type": "git",

src/subscriber/subscriber.test.js

@@ -0,0 +1,16 @@
+import { test, expect } from 'vitest';
+
+import { db } from './subscriber';
+
+test('db should have users, articles, photos, and subscribe properties', () => {
+  expect(db).toHaveProperty('users');
+  expect(db).toHaveProperty('articles');
+  expect(db).toHaveProperty('photos');
+  expect(db).toHaveProperty('subscribe');
+});
+
+test('db.subscribe should return the event', () => {
+  const event = 'usersCreated';
+  const callback = () => {};
+  expect(db.subscribe(event, callback)).toBe(event);
+});

src/subscriber/subscriber.ts

@@ -0,0 +1,29 @@
+export interface User {
+  id: number;
+  firstName: string;
+  lastName: string;
+}
+
+export interface Article {
+  id: number;
+  title: string;
+  content: string;
+}
+
+export interface Photo {
+  id: number;
+  url: string;
+}
+
+export type CRUDEvent = 'created' | 'read' | 'updated' | 'deleted';
+
+interface Database {
+  users: User[];
+  articles: Article[];
+  photos: Photo[];
+}
+
+export const db: SubscribableDatabase<Database> = {};
+
+db.subscribe<'users'>('usersCreated', (users) => {});
+db.subscribe<'articles'>('articlesRead', (articles) => {});