feat: chain abstraction multibridge (#699)

* chore: add missing eip155 testnet chains

* chore: remove unused chain

* Show USDC balance in wallet

* chore: add loading indicator

* chore: add multibridge dapp with checks wallet side

* chore: add loader

* fix: padding

* fix: format

* chore: add multibridge request and multibrdige utils

* fix: chains

* chore: load bridging request

* fix: typo

* chore: implement amount multiplier

* chore: dapp improvements

* chore: add performance measurements

* chore: add custom logic for bridge tx check

advanced/dapps/chain-abstraction-demo/.eslintrc.json

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+{
+  "extends": "next/core-web-vitals"
+}

advanced/dapps/chain-abstraction-demo/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+.yarn/install-state.gz
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts

advanced/dapps/chain-abstraction-demo/README.md

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+This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app).
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+
+This project uses [`next/font`](https://nextjs.org/docs/basic-features/font-optimization) to automatically optimize and load Inter, a custom Google Font.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details.

advanced/dapps/chain-abstraction-demo/app/globals.css

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+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+:root {
+  --foreground-rgb: 0, 0, 0;
+  --background-start-rgb: 214, 219, 220;
+  --background-end-rgb: 255, 255, 255;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --foreground-rgb: 255, 255, 255;
+    --background-start-rgb: 0, 0, 0;
+    --background-end-rgb: 0, 0, 0;
+  }
+}
+
+@layer utilities {
+  .text-balance {
+    text-wrap: balance;
+  }
+}
+
+@layer base {
+  :root {
+    --background: 0 0% 100%;
+    --foreground: 240 10% 3.9%;
+    --card: 0 0% 100%;
+    --card-foreground: 240 10% 3.9%;
+    --popover: 0 0% 100%;
+    --popover-foreground: 240 10% 3.9%;
+    --primary: 240 5.9% 10%;
+    --primary-foreground: 0 0% 98%;
+    --secondary: 240 4.8% 95.9%;
+    --secondary-foreground: 240 5.9% 10%;
+    --muted: 240 4.8% 95.9%;
+    --muted-foreground: 240 3.8% 46.1%;
+    --accent: 240 4.8% 95.9%;
+    --accent-foreground: 240 5.9% 10%;
+    --destructive: 0 84.2% 60.2%;
+    --destructive-foreground: 0 0% 98%;
+    --border: 240 5.9% 90%;
+    --input: 240 5.9% 90%;
+    --ring: 240 10% 3.9%;
+    --chart-1: 12 76% 61%;
+    --chart-2: 173 58% 39%;
+    --chart-3: 197 37% 24%;
+    --chart-4: 43 74% 66%;
+    --chart-5: 27 87% 67%;
+    --radius: 0.5rem;
+  }
+  .dark {
+    --background: 240 10% 3.9%;
+    --foreground: 0 0% 98%;
+    --card: 240 10% 3.9%;
+    --card-foreground: 0 0% 98%;
+    --popover: 240 10% 3.9%;
+    --popover-foreground: 0 0% 98%;
+    --primary: 0 0% 98%;
+    --primary-foreground: 240 5.9% 10%;
+    --secondary: 240 3.7% 15.9%;
+    --secondary-foreground: 0 0% 98%;
+    --muted: 240 3.7% 15.9%;
+    --muted-foreground: 240 5% 64.9%;
+    --accent: 240 3.7% 15.9%;
+    --accent-foreground: 0 0% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 0 0% 98%;
+    --border: 240 3.7% 15.9%;
+    --input: 240 3.7% 15.9%;
+    --ring: 240 4.9% 83.9%;
+    --chart-1: 220 70% 50%;
+    --chart-2: 160 60% 45%;
+    --chart-3: 30 80% 55%;
+    --chart-4: 280 65% 60%;
+    --chart-5: 340 75% 55%;
+  }
+}
+
+@layer base {
+  * {
+    @apply border-border;
+  }
+  body {
+    @apply bg-background text-foreground;
+  }
+}

advanced/dapps/chain-abstraction-demo/app/hooks/useSendUsdc.tsx

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+"use client";
+import { config } from "@/config";
+import { tokenAddresses } from "@/consts/tokens";
+import { erc20Abi, Hex } from "viem";
+import { getAccount, getWalletClient } from "wagmi/actions";
+
+export default function useSendUsdc() {
+  const sendUsdcAsync = async (address: Hex, amount: number) => {
+    const client = await getWalletClient(config);
+    const account = getAccount(config);
+    const chain = account.chain?.id;
+    if (!chain) {
+      throw new Error("Chain undefined");
+    }
+    const contract = tokenAddresses[chain];
+    if (!chain) {
+      throw new Error("Cant send on specified chain");
+    }
+    const tx = await client.writeContract({
+      abi: erc20Abi,
+      address: contract, // arbitrum usdc
+      functionName: "transfer",
+      args: [address, BigInt(amount)],
+    });
+    return tx;
+  };
+  return { sendUsdcAsync };
+}

advanced/dapps/chain-abstraction-demo/app/layout.tsx

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+import type { Metadata } from "next";
+import { Inter as FontSans } from "next/font/google";
+import "./globals.css";
+import { cookieToInitialState } from "wagmi";
+import { config } from "@/config";
+import AppKitProvider from "@/context";
+import { Toaster } from "@/components/ui/toaster";
+import { headers } from "next/headers";
+import { cn } from "@/lib/utils";
+import { ThemeProvider } from "@/components/theme-provider";
+
+const fontSans = FontSans({
+  subsets: ["latin"],
+  variable: "--font-sans",
+});
+
+export const metadata: Metadata = {
+  title: "Chain Abstraction Demo",
+  description: "Demo dapp for chain abstraction UX demonstration",
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  const initialState = cookieToInitialState(config, headers().get("cookie"));
+
+  return (
+    <html lang="en" suppressHydrationWarning>
+      <head />
+      <body
+        className={cn(
+          "min-h-screen bg-background font-sans antialiased pt-12 pb-24 mt-12 overflow-y-auto",
+          fontSans.variable
+        )}
+      >
+        <AppKitProvider initialState={initialState}>
+          <ThemeProvider
+            attribute="class"
+            defaultTheme="dark"
+            disableTransitionOnChange
+          >
+            <div className="flex items-center justify-center min-h-screen">
+              {children}
+            </div>
+          </ThemeProvider>
+        </AppKitProvider>
+        <Toaster />
+      </body>
+    </html>
+  );
+}

advanced/dapps/chain-abstraction-demo/app/page.tsx

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+import { Card, CardContent, CardHeader } from "@/components/ui/card";
+import Transfer from "./transfer";
+
+export default function Home() {
+  return (
+    <main>
+      <div>
+        <Card>
+          <CardHeader>
+            <w3m-button />
+          </CardHeader>
+          <CardContent>
+            <Transfer></Transfer>
+          </CardContent>
+        </Card>
+      </div>
+    </main>
+  );
+}

advanced/dapps/chain-abstraction-demo/app/transfer.tsx

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+"use client";
+import { Button } from "@/components/ui/button";
+import useSendUsdc from "./hooks/useSendUsdc";
+import { useAccount } from "wagmi";
+import { useState } from "react";
+import { useToast } from "@/hooks/use-toast";
+import { Loader2 } from "lucide-react";
+
+const sendToAddress = "0x81D8C68Be5EcDC5f927eF020Da834AA57cc3Bd24";
+const sendAmount = 6000000;
+
+export default function Transfer() {
+  const { sendUsdcAsync } = useSendUsdc();
+  const { isConnected, chain } = useAccount();
+  const [isLoading, setIsLoading] = useState(false);
+  const { toast } = useToast();
+
+  const onButtonClick = async () => {
+    try {
+      setIsLoading(true);
+      const res = await sendUsdcAsync(sendToAddress, sendAmount);
+      console.log("Transaction completed", res);
+      toast({
+        title: "Transaction completed",
+        description: res,
+      });
+    } catch (error) {
+      console.log(error);
+      toast({
+        variant: "destructive",
+        title: "Uh oh! Something went wrong.",
+        description: "There was a problem with your request.",
+      });
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return (
+    <>
+      {isConnected ? (
+        <Button onClick={onButtonClick} disabled={isLoading}>
+          {isLoading ? (
+            <>
+              <Loader2 className="mr-2 h-4 w-4 animate-spin" /> Sending...
+            </>
+          ) : (
+            <>Perform action with USDC on {chain?.name}</>
+          )}
+        </Button>
+      ) : null}
+    </>
+  );
+}

advanced/dapps/chain-abstraction-demo/components.json

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+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": true,
+  "tsx": true,
+  "tailwind": {
+    "config": "tailwind.config.ts",
+    "css": "app/globals.css",
+    "baseColor": "zinc",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  }
+}

advanced/dapps/chain-abstraction-demo/components/theme-provider.tsx

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+"use client";
+
+import * as React from "react";
+import { ThemeProvider as NextThemesProvider } from "next-themes";
+import { type ThemeProviderProps } from "next-themes/dist/types";
+
+export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
+  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+}