Frontend Architecture

import { init } from "./firebase";
import { onAuthStateChanged } from "./auth";
import { loadFromLocalStorage } from "./config";
import { mountComponents } from "./components/mount";

// 1. Lock Math.random (anti-cheat)
Object.defineProperty(Math, "random", {
  value: Math.random,
  writable: false,
  configurable: false,
});

// 2. Load user config from localStorage
void loadFromLocalStorage();

// 3. Initialize Firebase auth
void init(onAuthStateChanged).then(() => {
  Cookies.activateWhatsAccepted();
});

// 4. Mount SolidJS components
mountComponents();

import { render } from "solid-js/web";
import { QueryClientProvider } from "@tanstack/solid-query";

const components: Record<string, () => JSXElement> = {
  footer: () => <Footer />,
  aboutpage: () => <AboutPage />,
  profilepage: () => <ProfilePage />,
  modals: () => <Modals />,
  overlays: () => <Overlays />,
  theme: () => <Theme />,
};

export function mountComponents(): void {
  for (const [query, component] of Object.entries(components)) {
    mountToMountpoint(`mount[data-component=${query}]`, component);
  }
}

import { createSignal } from "solid-js";

// Fine-grained reactive state
const [count, setCount] = createSignal(0);

// Components automatically re-render when signals change
function Counter() {
  return <div>Count: {count()}</div>;
}

import { createStore } from "solid-js/store";

// For complex nested objects
const [state, setState] = createStore({
  user: { name: "" },
  settings: { theme: "dark" },
});

// Fine-grained updates
setState("user", "name", "Alice");

// Legacy observable pattern (being migrated to Solid)
class ThemeController {
  private listeners: (() => void)[] = [];
  
  subscribe(fn: () => void) {
    this.listeners.push(fn);
  }
  
  notify() {
    this.listeners.forEach(fn => fn());
  }
}

import { createQuery } from "@tanstack/solid-query";

// Server state with caching and refetching
function useUserProfile(uid: string) {
  return createQuery(() => ({
    queryKey: ["profile", uid],
    queryFn: () => apiClient.users.getProfile({ params: { uid } }),
    staleTime: 5 * 60 * 1000, // 5 minutes
  }));
}

// User configuration persisted to localStorage
export default class Config {
  static save(): void {
    localStorage.setItem("config", JSON.stringify(this.config));
  }
  
  static loadFromLocalStorage(): void {
    const stored = localStorage.getItem("config");
    if (stored) this.config = JSON.parse(stored);
  }
}

// Local database for offline support
import { openDB } from "idb";

const db = await openDB("monkeytype", 1, {
  upgrade(db) {
    db.createObjectStore("results");
    db.createObjectStore("snapshot");
  },
});

// Page-based routing with SPA navigation
class RouteController {
  navigate(page: string) {
    // Hide current page
    this.currentPage?.hide();
    
    // Show new page
    const nextPage = this.pages[page];
    nextPage.show();
    
    // Update URL without reload
    history.pushState({}, "", `/${page}`);
  }
}

import { initClient } from "@ts-rest/core";
import { contract } from "@monkeytype/contracts";

// Type-safe API client
export const apiClient = initClient(contract, {
  baseUrl: import.meta.env.BACKEND_URL,
  baseHeaders: async () => ({
    Authorization: `Bearer ${await getAuthToken()}`,
  }),
});

// Usage (fully typed!)
const response = await apiClient.users.getProfile({
  params: { uid: "user123" },
});

if (response.status === 200) {
  console.log(response.body.data.name); // ✅ Typed!
}

export default defineConfig(({ mode }) => {
  const isDevelopment = mode !== "production";
  
  return {
    plugins: [
      solidPlugin(),        // SolidJS support
      tailwindcss(),        // TailwindCSS integration
      oxlintChecker(),      // Fast linting
      Inspect(),            // Debug plugin transforms
    ],
    server: {
      port: 3000,
      host: true,
      open: true,
    },
  };
});

const prodPlugins = [
  ViteMinifyPlugin(),           // HTML minification
  minifyJson(),                 // JSON minification
  fontawesomeSubset(),          // Icon subsetting
  VitePWA({                     // Progressive Web App
    registerType: "autoUpdate",
    workbox: {
      runtimeCaching: [/* ... */],
    },
  }),
  sentryVitePlugin({            // Error tracking
    release: { name: clientVersion },
  }),
];

rollupOptions: {
  output: {
    manualChunks: (id) => {
      if (id.includes("@sentry")) return "vendor-sentry";
      if (id.includes("@firebase")) return "vendor-firebase";
      if (id.includes("monkeytype/packages")) return "monkeytype-packages";
      if (id.includes("node_modules")) return "vendor";
    },
  },
}

workbox: {
  runtimeCaching: [
    {
      urlPattern: (options) => options.sameOrigin,
      handler: "NetworkFirst",
    },
  ],
}