refactor!: migrate away from bun

- migrate package management to pnpm
- migrate test suite to vitest
- also remove Anify integration

src/controllers/search/index.spec.ts

@@ -1,21 +1,74 @@
-import { describe, expect, it } from "bun:test";
-
-import app from "~/index";
-import { server } from "~/mocks";
-
-server.listen();
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
 describe('requests the "/search" route', () => {
+  let app: typeof import("~/index").app;
+  let fetchFromMultipleSources: typeof import("~/libs/fetchFromMultipleSources").fetchFromMultipleSources;
+
+  beforeEach(async () => {
+    vi.resetModules();
+
+    // Mock useMockData
+    vi.doMock("~/libs/useMockData", () => ({
+      useMockData: () => false,
+    }));
+
+    // Mock fetchFromMultipleSources
+    vi.doMock("~/libs/fetchFromMultipleSources", () => ({
+      fetchFromMultipleSources: vi.fn(),
+    }));
+
+    const indexModule = await import("~/index");
+    app = indexModule.app;
+
+    const fetchModule = await import("~/libs/fetchFromMultipleSources");
+    fetchFromMultipleSources = fetchModule.fetchFromMultipleSources;
+  });
+
+  afterEach(() => {
+    vi.doUnmock("~/libs/fetchFromMultipleSources");
+    vi.doUnmock("~/libs/useMockData");
+    vi.restoreAllMocks();
+  });
+
   it("valid query that returns anilist results", async () => {
+    vi.mocked(fetchFromMultipleSources).mockResolvedValue({
+      result: {
+        results: [
+          {
+            id: 151807,
+            title: {
+              userPreferred: "Ore dake Level Up na Ken",
+              english: "Solo Leveling",
+            },
+            coverImage: {
+              extraLarge:
+                "https://s4.anilist.co/file/anilistcdn/media/anime/cover/large/bx151807-yxY3olrjZH4k.png",
+              large:
+                "https://s4.anilist.co/file/anilistcdn/media/anime/cover/medium/bx151807-yxY3olrjZH4k.png",
+              medium:
+                "https://s4.anilist.co/file/anilistcdn/media/anime/cover/small/bx151807-yxY3olrjZH4k.png",
+            },
+          },
+        ],
+        hasNextPage: false,
+      },
+      errorOccurred: false,
+    });
+
     const response = await app.request("/search?query=search query");
 
-    expect(response.json()).resolves.toMatchSnapshot();
+    expect(await response.json()).toMatchSnapshot();
   });
 
   it("query that returns no results", async () => {
+    vi.mocked(fetchFromMultipleSources).mockResolvedValue({
+      result: null,
+      errorOccurred: false,
+    });
+
     const response = await app.request("/search?query=a");
 
-    expect(response.json()).resolves.toEqual({
+    expect(await response.json()).toEqual({
       success: true,
       results: [],
       hasNextPage: false,