refactor!: migrate away from bun

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

src/controllers/title/index.spec.ts

@@ -1,31 +1,81 @@
-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 "/title" route', () => {
+  let app: typeof import("~/index").app;
+  let fetchFromMultipleSources: typeof import("~/libs/fetchFromMultipleSources").fetchFromMultipleSources;
+
+  beforeEach(async () => {
+    vi.resetModules();
+
+    vi.doMock("~/libs/useMockData", () => ({
+      useMockData: () => false,
+    }));
+
+    vi.doMock("~/libs/fetchFromMultipleSources", () => ({
+      fetchFromMultipleSources: vi.fn(),
+    }));
+
+    app = (await import("~/index")).app;
+    fetchFromMultipleSources = (await import("~/libs/fetchFromMultipleSources"))
+      .fetchFromMultipleSources;
+  });
+
+  afterEach(() => {
+    vi.doUnmock("~/libs/fetchFromMultipleSources");
+    vi.doUnmock("~/libs/useMockData");
+    vi.restoreAllMocks();
+  });
+
+  const mockTitleFn = (id: number) => ({
+    id,
+    title: {
+      userPreferred: "Test Title",
+      english: "Test Title English",
+    },
+    description: "Test Description",
+    coverImage: {
+      extraLarge: "https://example.com/cover.png",
+      large: "https://example.com/cover.png",
+      medium: "https://example.com/cover.png",
+    },
+    bannerImage: "https://example.com/banner.png",
+  });
+
   it("with a valid id & token", async () => {
+    vi.mocked(fetchFromMultipleSources).mockResolvedValue({
+      result: mockTitleFn(10) as any,
+      errorOccurred: false,
+    });
+
     const response = await app.request("/title?id=10", {
       headers: new Headers({ "x-anilist-token": "asd" }),
     });
 
-    expect(response.json()).resolves.toMatchSnapshot();
+    expect(await response.json()).toMatchSnapshot();
     expect(response.status).toBe(200);
   });
 
   it("with a valid id but no token", async () => {
+    vi.mocked(fetchFromMultipleSources).mockResolvedValue({
+      result: mockTitleFn(10) as any,
+      errorOccurred: false,
+    });
+
     const response = await app.request("/title?id=10");
 
-    expect(response.json()).resolves.toMatchSnapshot();
+    expect(await response.json()).toMatchSnapshot();
     expect(response.status).toBe(200);
   });
 
   it("with an unknown title from all sources", async () => {
+    vi.mocked(fetchFromMultipleSources).mockResolvedValue({
+      result: null,
+      errorOccurred: false,
+    });
+
     const response = await app.request("/title?id=-1");
 
-    expect(response.json()).resolves.toEqual({ success: false });
+    expect(await response.json()).toEqual({ success: false });
     expect(response.status).toBe(404);
   });
 });