### start()

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Starts the Anvil node, allocating a port, spawning the process, and waiting for it to become ready. Example usage shows how to start the node and log its RPC URL.

```APIDOC
## start()

### Description
Starts the Anvil node with the configured options. Allocates a port, spawns the process, and waits for readiness.

### Method
`async start(): Promise<void>`

### Example
```typescript
const node = new LocalNodeManager()
await node.start()
console.log(`Node running at ${node.rpcUrl}`)
```
```

--------------------------------

### Comprehensive Coinbase Wallet Test Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/coinbase

A full test example demonstrating dApp navigation, wallet connection, passkey setup, network switching, and transaction approval with Coinbase Wallet.

```typescript
import { createOnchainTest, CoinbaseSpecificActionType, BaseActionType } from '@coinbase/onchaintestkit';
import { configure } from '@coinbase/onchaintestkit';

const config = configure()
  .withLocalNode({
    chainId: 84532,
    forkUrl: process.env.E2E_TEST_FORK_URL,
  })
  .withCoinbase()
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'COMPLEXPASSWORD1',
  })
  .build();

const test = createOnchainTest(config);

test('comprehensive Coinbase test', async ({ page, coinbase, node }) => {
  if (!coinbase) throw new Error('Coinbase fixture is required');

  // Navigate to dApp
  await page.goto('https://app.example.com');

  // Connect wallet
  await page.getByTestId('connect-wallet').click();
  await page.getByRole('button', { name: 'Coinbase' }).click();
  await coinbase.handleAction(BaseActionType.CONNECT_TO_DAPP);

  // Setup passkey
  const [passkeyPopup] = await Promise.all([
    page.context().waitForEvent('page'),
    page.getByTestId('enable-passkey').click(),
  ]);

  await coinbase.handleAction(CoinbaseSpecificActionType.HANDLE_PASSKEY_POPUP, {
    mainPage: page,
    popup: passkeyPopup,
    passkeyAction: 'register',
    passkeyConfig: {
      name: 'Test Passkey',
      rpId: 'localhost',
      rpName: 'Example dApp',
      userId: 'test-user',
      isUserVerified: true,
    },
  });

  // Add custom network
  await coinbase.handleAction(CoinbaseSpecificActionType.ADD_NETWORK, {
    network: {
      name: 'Local Test Network',
      rpcUrl: `http://localhost:${node?.port}`,
      chainId: 84532,
      symbol: 'ETH',
    },
  });

  // Switch to the network
  await coinbase.handleAction(BaseActionType.SWITCH_NETWORK, {
    networkName: 'Local Test Network',
  });

  // Perform transaction with passkey approval
  await page.getByRole('button', { name: 'Send Transaction' }).click();
  
  const [txPopup] = await Promise.all([
    page.context().waitForEvent('page'),
    page.getByRole('button', { name: 'Confirm' }).click(),
  ]);

  await coinbase.handleAction(CoinbaseSpecificActionType.HANDLE_PASSKEY_POPUP, {
    mainPage: page,
    popup: txPopup,
    passkeyAction: 'approve',
  });

  // Verify success
  await expect(page.getByText('Transaction complete')).toBeVisible();
});
```

--------------------------------

### MetaMask Complete Example Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

A comprehensive configuration for MetaMask, including local node setup, seed phrase, and network details. Ensure environment variables are set.

```typescript
// e2e/config/metamask.config.ts
import { baseSepolia } from "viem/chains"
import { configure } from "@coinbase/onchaintestkit"

export const DEFAULT_PASSWORD = "PASSWORD"
export const DEFAULT_SEED_PHRASE = process.env.E2E_TEST_SEED_PHRASE

const config = configure()
  .withLocalNode({
    chainId: baseSepolia.id,
    forkUrl: process.env.E2E_TEST_FORK_URL,
    forkBlockNumber: BigInt(process.env.E2E_TEST_FORK_BLOCK_NUMBER ?? "0"),
    hardfork: "cancun",
  })
  .withMetaMask()
  .withSeedPhrase({
    seedPhrase: DEFAULT_SEED_PHRASE ?? "",
    password: DEFAULT_PASSWORD,
  })
  .withNetwork({
    name: "Base Sepolia",
    chainId: baseSepolia.id,
    symbol: "ETH",
    rpcUrl: "http://localhost:8545",
  })
  .build()

export const metamaskWalletConfig = config
```

--------------------------------

### Comprehensive MetaMask Test Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/metamask

A full example demonstrating MetaMask setup, account and network management, token addition, dApp connection, and transaction handling within a test.

```typescript
import { createOnchainTest, MetaMaskSpecificActionType, BaseActionType } from '@coinbase/onchaintestkit';
import { configure } from '@coinbase/onchaintestkit';
import { baseSepolia } from "viem/chains"

const config = configure()
  .withLocalNode({
    chainId: baseSepolia.id,
    forkUrl: process.env.E2E_TEST_FORK_URL,
  })
  .withMetaMask()
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'PASSWORD',
  })
  .withNetwork({
    name: "Base Sepolia",
    chainId: baseSepolia.id,
    symbol: "ETH",
    // placeholder for the actual rpcUrl, which is auto injected by the node fixture
    rpcUrl: "http://localhost:8545",
  })
  .build();

const test = createOnchainTest(config);

test('comprehensive MetaMask test', async ({ page, metamask }) => {
  if (!metamask) throw new Error('MetaMask fixture is required');

  // Add accounts
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_ACCOUNT, {
    accountName: 'DeFi Account',
  });

  // Add custom network
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_NETWORK, {
    network: {
      name: 'Base Mainnet',
      rpcUrl: 'https://mainnet.base.org',
      chainId: 8453,
      symbol: 'ETH',
    },
  });

  // Switch network
  await metamask.handleAction(BaseActionType.SWITCH_NETWORK, {
    networkName: 'Base Mainnet',
  });

  // Add tokens
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_TOKEN, {
    tokenAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
    tokenSymbol: 'USDC',
    tokenDecimals: 6,
  });

  // Connect to dApp
  await page.goto('https://app.example.com');
  await page.getByTestId('connect-wallet').click();
  await page.getByRole('button', { name: 'MetaMask' }).click();
  await metamask.handleAction(BaseActionType.CONNECT_TO_DAPP);

  // Perform transaction
  await page.getByRole('button', { name: 'Send Transaction' }).click();
  await metamask.handleAction(BaseActionType.HANDLE_TRANSACTION, {
    approvalType: ActionApprovalType.APPROVE,
  });
});
```

--------------------------------

### Basic Wallet Action Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Demonstrates how to perform a basic wallet action, such as connecting to a dApp.

```typescript
await wallet.handleAction(BaseActionType.CONNECT_TO_DAPP);
```

--------------------------------

### Install Foundry and Verify

Source: https://onchaintestkit.xyz/onchaintestkit/installation

Installs Foundry using the official installer script and verifies the installation by checking the anvil version. Remember to update your PATH.

```bash
curl -L https://foundry.paradigm.xyz | bash
source ~/.bashrc
anvil --version
```

--------------------------------

### Coinbase Wallet Complete Example Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

A comprehensive configuration for Coinbase Wallet, including local node setup, seed phrase, and network details. Ensure environment variables are set.

```typescript
// e2e/config/coinbase.config.ts
import { baseSepolia } from "viem/chains"
import { configure } from "@coinbase/onchaintestkit"

export const DEFAULT_PASSWORD = "COMPLEXPASSWORD1"
export const DEFAULT_SEED_PHRASE = process.env.E2E_TEST_SEED_PHRASE

const config = configure()
  .withLocalNode({
    chainId: baseSepolia.id,
    forkUrl: process.env.E2E_TEST_FORK_URL,
    forkBlockNumber: BigInt(process.env.E2E_TEST_FORK_BLOCK_NUMBER ?? "0"),
    hardfork: "cancun",
  })
  .withCoinbase()
  .withSeedPhrase({
    seedPhrase: DEFAULT_SEED_PHRASE ?? "",
    password: DEFAULT_PASSWORD,
  })
  .withNetwork({
    name: "Base Sepolia",
    chainId: baseSepolia.id,
    symbol: "ETH",
    rpcUrl: "http://localhost:8545",
  })
  .build()

export const coinbaseWalletConfig = config
```

--------------------------------

### Install Foundry

Source: https://onchaintestkit.xyz/onchaintestkit/quickstart

Install Foundry, a blockchain development toolkit, using the provided curl command and then update it.

```bash
curl -L https://foundry.paradigm.xyz | bash
foundryup
```

--------------------------------

### Install OnchainTestKit with Bun

Source: https://onchaintestkit.xyz/onchaintestkit/installation

Installs OnchainTestKit, Playwright, and necessary wallet extensions using Bun. Ensure Playwright browsers are installed with system dependencies.

```bash
bun add -D @coinbase/onchaintestkit @playwright/test
bunx playwright install --with-deps
bun prepare-metamask
bun prepare-coinbase
```

--------------------------------

### Wallet Action with Options Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Shows how to execute a wallet action with specific options, like approving a transaction.

```typescript
await wallet.handleAction(BaseActionType.HANDLE_TRANSACTION, {
  approvalType: ActionApprovalType.APPROVE
});
```

--------------------------------

### Network Switching Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Illustrates how to switch the wallet to a different network, specifying network name and testnet status.

```typescript
await wallet.handleAction(BaseActionType.SWITCH_NETWORK, {
  networkName: 'Base Sepolia',
  isTestnet: true
});
```

--------------------------------

### Install OnchainTestKit with npm

Source: https://onchaintestkit.xyz/onchaintestkit/installation

Installs OnchainTestKit, Playwright, and necessary wallet extensions using npm. Ensure Playwright browsers are installed with system dependencies.

```bash
npm install -D @coinbase/onchaintestkit @playwright/test
npx playwright install --with-deps
npm run prepare-metamask
npm run prepare-coinbase
```

--------------------------------

### Install OnchainTestKit with Yarn

Source: https://onchaintestkit.xyz/onchaintestkit/installation

Installs OnchainTestKit, Playwright, and necessary wallet extensions using Yarn. Ensure Playwright browsers are installed with system dependencies.

```bash
yarn add -D @coinbase/onchaintestkit @playwright/test
yarn playwright install --with-deps
yarn prepare-metamask
yarn prepare-coinbase
```

--------------------------------

### Complete Passkey Flow Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/coinbase

Demonstrates a full end-to-end flow involving connecting a wallet, registering a passkey, and approving a transaction using the passkey.

```typescript
test('complete passkey flow', async ({ page, coinbase }) => {
  if (!coinbase) throw new Error('Coinbase fixture is required');

  // Connect wallet
  await page.getByTestId('connect-wallet').click();
  await page.getByRole('button', { name: 'Coinbase' }).click();
  await coinbase.handleAction(BaseActionType.CONNECT_TO_DAPP);

  // Register passkey
  const [registerPopup] = await Promise.all([
    page.context().waitForEvent('page'),
    page.getByTestId('setup-passkey').click(),
  ]);

  await coinbase.handleAction(CoinbaseSpecificActionType.HANDLE_PASSKEY_POPUP, {
    mainPage: page,
    popup: registerPopup,
    passkeyAction: 'register',
    passkeyConfig: {
      name: 'Test Passkey',
      rpId: 'localhost',
      rpName: 'Test dApp',
      userId: 'user-' + Date.now(),
      isUserVerified: true,
    },
  });

  // Use passkey for transaction
  await page.getByRole('button', { name: 'Send ETH' }).click();
  
  const [txPopup] = await Promise.all([
    page.context().waitForEvent('page'),
    page.getByRole('button', { name: 'Confirm' }).click(),
  ]);

  await coinbase.handleAction(CoinbaseSpecificActionType.HANDLE_PASSKEY_POPUP, {
    mainPage: page,
    popup: txPopup,
    passkeyAction: 'approve',
  });

  // Verify transaction success
  await expect(page.getByText('Transaction successful')).toBeVisible();
});
```

--------------------------------

### Build Smart Contracts

Source: https://onchaintestkit.xyz/onchaintestkit/smart-contracts

Installs project dependencies and builds the smart contracts using Forge.

```bash
cd smart-contracts

# Install dependencies
forge install foundry-rs/forge-std OpenZeppelin/openzeppelin-contracts

# Build contracts
forge build
```

--------------------------------

### Verify OnchainTestKit Installation

Source: https://onchaintestkit.xyz/onchaintestkit/installation

Commands to check if Node.js, Playwright, and Anvil are installed correctly, and to list available Playwright browsers.

```bash
# Check Node.js
node --version

# Check Playwright
npx playwright --version

# Check Anvil
anvil --version

# List installed browsers
npx playwright show-browsers

```

--------------------------------

### Set Up Contract State for Tests

Source: https://onchaintestkit.xyz/onchaintestkit/contracts/smart-contract-manager

Deploys contracts and executes calls as specified in a setup configuration. Useful for complex test scenario setup.

```typescript
async setContractState(
  config: SetupConfig, 
  node: LocalNodeManager
): Promise<void>
```

--------------------------------

### Start Local Node

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Starts the Anvil node, allocates a port, spawns the process, and waits for readiness. Use this to initialize the node before interacting with it.

```typescript
const node = new LocalNodeManager()
await node.start()
console.log(`Node running at ${node.rpcUrl}`)
```

--------------------------------

### Example: Default Balance Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Set the default balance in wei for newly generated test accounts.

```typescript
defaultBalance: parseEther("100")
```

--------------------------------

### MetaMask Basic Setup

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

Configure MetaMask with a seed phrase for basic testing. Ensure the E2E_TEST_SEED_PHRASE environment variable is set.

```typescript
import { configure } from '@coinbase/onchaintestkit';

const metamaskConfig = configure()
  .withMetaMask()
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'PASSWORD',
  })
  .build();
```

--------------------------------

### Start Local Node Manager

Source: https://onchaintestkit.xyz/onchaintestkit/node/overview

Initializes and starts a LocalNodeManager instance with specified chain, fork, and hardfork configurations. Automatically allocates an available port for the node. Use this to set up your testing environment.

```typescript
import { LocalNodeManager } from '@coinbase/onchaintestkit'
import { baseSepolia } from 'viem/chains'

// Create a node manager with automatic port allocation
const node = new LocalNodeManager({
    chainId: baseSepolia.id,
    forkUrl: process.env.E2E_TEST_FORK_URL,
    forkBlockNumber: BigInt(process.env.E2E_TEST_FORK_BLOCK_NUMBER ?? "0"),
    hardfork: "cancun",
})

// Start the node
await node.start()
console.log(`Node running on port ${node.getPort()}`)

// Manipulate chain state
const snapshotId = await node.snapshot()
// ...run tests...
await node.revert(snapshotId)

// Clean up
await node.stop()
```

--------------------------------

### Install OnchainTestKit and Playwright Dependencies

Source: https://onchaintestkit.xyz/onchaintestkit/quickstart

Install the necessary OnchainTestKit and Playwright packages as development dependencies and download Playwright's browser binaries.

```bash
yarn add -D @coinbase/onchaintestkit @playwright/test
yarn playwright install --with-deps
```

--------------------------------

### Complete dApp Wallet Flow Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/common-actions

Demonstrates a full end-to-end test scenario for a dApp, including connecting to the dApp, switching networks, performing a swap, and handling transaction approvals.

```typescript
import { createOnchainTest, BaseActionType, ActionApprovalType } from '@coinbase/onchaintestkit';
import { metamaskWalletConfig } from './config/metamaskWalletConfig';

const test = createOnchainTest(metamaskWalletConfig);

test('complete wallet flow', async ({ page, metamask }) => {
  if (!metamask) throw new Error('MetaMask fixture is required');

  // Connect to dApp
  await page.getByTestId('ockConnectButton').click();
  await page.getByRole('button', { name: 'MetaMask' }).click();
  await metamask.handleAction(BaseActionType.CONNECT_TO_DAPP);
  
  // Switch network
  await page.getByTestId('switch-network').click();
  await metamask.handleAction(BaseActionType.SWITCH_NETWORK, {
    networkName: 'Base Sepolia',
    isTestnet: true
  });
  
  // Perform swap transaction
  await page.locator('input[placeholder="0.0"]').fill('0.1');
  await page.getByRole('button', { name: 'Swap' }).click();
  
  // Handle spending cap if needed
  let notificationType = await metamask.identifyNotificationType();
  if (notificationType === 'SpendingCap') {
    await metamask.handleAction(BaseActionType.CHANGE_SPENDING_CAP, { 
      approvalType: ActionApprovalType.APPROVE 
    });
  }
  
  // Handle transaction
  notificationType = await metamask.identifyNotificationType();
  if (notificationType === 'Transaction') {
    await metamask.handleAction(BaseActionType.HANDLE_TRANSACTION, { 
      approvalType: ActionApprovalType.APPROVE 
    });
  }
  
  // Verify success
  await expect(page.getByRole('link', { name: 'View on Explorer' })).toBeVisible();
});
```

--------------------------------

### WalletSetupContext Interface

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Contextual information provided during wallet setup. This can include details like the local node port.

```typescript
interface WalletSetupContext {
  localNodePort?: number;
}
```

--------------------------------

### Example: Fork URL Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Specify a URL to fork from, enabling fork mode for the local node.

```typescript
forkUrl: "https://mainnet.base.org"
```

--------------------------------

### Complete MetaMask Account Management Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/metamask

Demonstrates a full cycle of account management operations within MetaMask, including adding, switching, and removing accounts.

```typescript
test('MetaMask account management', async ({ page, metamask }) => {
  if (!metamask) throw new Error('MetaMask fixture is required');

  // Add a new account
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_ACCOUNT, {
    accountName: 'DeFi Account',
  });

  // Add another account
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_ACCOUNT, {
    accountName: 'Trading Account',
  });

  // Switch between accounts
  await metamask.handleAction(MetaMaskSpecificActionType.SWITCH_ACCOUNT, {
    accountName: 'DeFi Account',
  });

  // Remove an account
  await metamask.handleAction(MetaMaskSpecificActionType.REMOVE_ACCOUNT, {
    accountName: 'Trading Account',
  });
});
```

--------------------------------

### Example: Basic Local Testing Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Configure a local node for testing with a specific chain ID, default balance, and number of accounts.

```typescript
const node = new LocalNodeManager({
    chainId: 31337,
    defaultBalance: parseEther("1000"),
    totalAccounts: 5,
})
```

--------------------------------

### Configure MetaMask with Custom Setup

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/metamask

Sets up MetaMask with a seed phrase and includes custom actions like importing accounts, adding tokens, and configuring networks.

```typescript
const metamaskConfig = configure()
  .withMetaMask()
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'PASSWORD',
  })
  .withCustomSetup(async (wallet, context) => {
    // Import additional accounts
    await wallet.handleAction(BaseActionType.IMPORT_WALLET_FROM_PRIVATE_KEY, {
      privateKey: process.env.SECONDARY_PRIVATE_KEY!,
    });
    
    // Add custom tokens
    await wallet.handleAction(MetaMaskSpecificActionType.ADD_TOKEN, {
      tokenAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
      tokenSymbol: 'USDC',
      tokenDecimals: 6,
    });
    
    // Add custom networks
    await wallet.handleAction(MetaMaskSpecificActionType.ADD_NETWORK, {
      network: {
        name: 'Base Mainnet',
        rpcUrl: 'https://mainnet.base.org',
        chainId: 8453,
        symbol: 'ETH',
      },
    });
  })
  .build();
```

--------------------------------

### Coinbase Wallet Basic Setup

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

Configure Coinbase Wallet with a seed phrase for basic testing. Ensure the E2E_TEST_SEED_PHRASE environment variable is set.

```typescript
import { configure } from '@coinbase/onchaintestkit';

const coinbaseConfig = configure()
  .withCoinbase()
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'COMPLEXPASSWORD1',
  })
  .build();
```

--------------------------------

### Example: Fixed Port Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Configure the node to use a specific, fixed port for the RPC server.

```typescript
const node = new LocalNodeManager({
    port: 8545, // Always use port 8545
    chainId: 31337,
})
```

--------------------------------

### Example: Mnemonic Phrase Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Provide a mnemonic phrase for generating deterministic test accounts.

```typescript
mnemonic: "test test test test test test test test test test test junk"
```

--------------------------------

### Basic ERC20 Token Deployment and Minting

Source: https://onchaintestkit.xyz/onchaintestkit/contracts/smart-contract-manager

Demonstrates deploying an ERC20 token using SmartContractManager and then minting tokens. Ensure the node is started and clients are initialized before deployment.

```typescript
import { SmartContractManager } from '@coinbase/onchaintestkit/contracts/SmartContractManager';
import { LocalNodeManager } from '@coinbase/onchaintestkit/node/LocalNodeManager';

async function deployToken() {
  const node = new LocalNodeManager({ chainId: 31337 });
  await node.start();

  try {
    const scm = new SmartContractManager(process.cwd());
    await scm.initialize(node);

    // Deploy ERC20 token
    const tokenAddress = await scm.deployContract({
      name: 'ERC20Token',
      args: ['Test Token', 'TEST', 1000000n * 10n ** 18n],
      salt: '0x' + '01'.repeat(32),
      deployer: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
    });

    console.log(`Token deployed at: ${tokenAddress}`);

    // Mint tokens
    await scm.executeCall({
      target: tokenAddress,
      functionName: 'mint',
      args: ['0x70997970C51812dc3A010C7d01b50e0d17dc79C8', 1000n * 10n ** 18n],
      account: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
    });

  } finally {
    await node.stop();
  }
}
```

--------------------------------

### Example: Fork Block Number Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Set a specific block number to fork from. This option requires `forkUrl` to be set.

```typescript
forkBlockNumber: 18000000n
```

--------------------------------

### Add Multiple Tokens to MetaMask Example

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/metamask

Demonstrates adding multiple ERC-20 tokens, such as USDC and DAI, to MetaMask in a single test.

```typescript
test('add multiple tokens', async ({ page, metamask }) => {
  // Add USDC
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_TOKEN, {
    tokenAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
    tokenSymbol: 'USDC',
    tokenDecimals: 6,
  });

  // Add DAI
  await metamask.handleAction(MetaMaskSpecificActionType.ADD_TOKEN, {
    tokenAddress: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
    tokenSymbol: 'DAI',
    tokenDecimals: 18,
  });
});
```

--------------------------------

### Example: Custom Port Range Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Configure the node to use a dynamic port within a specified range for the RPC server.

```typescript
const node = new LocalNodeManager({
    portRange: [20000, 30000], // Use ports 20000-30000
    chainId: 31337,
})
```

--------------------------------

### Example: Forking Mainnet Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Set up a node to fork from Ethereum Mainnet using an environment variable for the RPC URL, a specific block number, and the Cancun hardfork.

```typescript
const node = new LocalNodeManager({
    chainId: 1,
    forkUrl: process.env.ETH_MAINNET_RPC,
    forkBlockNumber: 18500000n,
    hardfork: "cancun",
})
```

--------------------------------

### Example: Base Sepolia Fork Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Configure a node to fork from Base Sepolia, using environment variables for the RPC URL and mnemonic, and a dynamic fork block number.

```typescript
const node = new LocalNodeManager({
    chainId: baseSepolia.id,
    forkUrl: process.env.BASE_SEPOLIA_RPC,
    forkBlockNumber: BigInt(process.env.FORK_BLOCK || "0"),
    mnemonic: process.env.TEST_MNEMONIC,
})
```

--------------------------------

### ConfigBuilder Methods Interface

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Defines the fluent interface for building onchain test configurations, allowing chaining of various setup methods.

```typescript
interface ConfigBuilder {
  withMetaMask(): ConfigBuilder;
  withCoinbase(): ConfigBuilder;
  withSeedPhrase(config: SeedPhraseConfig): ConfigBuilder;
  withNetwork(network: NetworkConfig): ConfigBuilder;
  withLocalNode(config: LocalNodeConfig): ConfigBuilder;
  withCustomSetup(setup: CustomSetupFunction): ConfigBuilder;
  build(): OnchainTestConfig;
}
```

--------------------------------

### setContractState()

Source: https://onchaintestkit.xyz/onchaintestkit/contracts/smart-contract-manager

Deploys contracts and executes calls as specified in a setup config. This is useful for setting up complex test scenarios.

```APIDOC
## setContractState(config: SetupConfig, node: LocalNodeManager)

### Description
Deploys contracts and executes calls as specified in a setup config. This is useful for setting up complex test scenarios.

### Parameters
#### Path Parameters
- **config** (SetupConfig) - Required - Setup configuration with deployments and calls
- **node** (LocalNodeManager) - Required - The local node manager instance

### Returns
- **Promise<void>**
```

--------------------------------

### GitHub Actions E2E Test Workflow

Source: https://onchaintestkit.xyz/onchaintestkit/ci-cd

A basic GitHub Actions workflow to run end-to-end tests for a project. It includes steps for checking out code, setting up Node.js, installing dependencies, building contracts, preparing wallet extensions, building the application, and running E2E tests.

```yaml
name: E2E Tests

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

jobs:
  e2e:
    runs-on: ubuntu-latest
    timeout-minutes: 30

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '18'
          cache: 'npm'

      - name: Set up Corepack + yarn
        run: |
          npm install -g corepack
          yarn set version 4.9.2

      - name: Install root dependencies
        run: yarn

      - name: Install Foundry
        uses: foundry-rs/foundry-toolchain@v1

      - name: Build contracts
        run: |
          cd smart-contracts
          forge install foundry-rs/forge-std
          forge install OpenZeppelin/openzeppelin-contracts
          forge build

      - name: Install Playwright browsers
        run: yarn playwright install --with-deps

      - name: Prepare wallet extensions
        run: |
          yarn prepare-metamask
          yarn prepare-coinbase

      - name: Build application
        run: |
          echo "E2E_TEST_SEED_PHRASE=${{ secrets.E2E_TEST_SEED_PHRASE }}" > .env
          echo "E2E_CONTRACT_PROJECT_ROOT=../smart-contracts" >> .env
          yarn build

      - name: Install xvfb
        run: sudo apt-get update && sudo apt-get install -y xvfb

      - name: Run E2E tests
        env:
          NODE_OPTIONS: '--dns-result-order=ipv4first'
        run: xvfb-run --auto-servernum --server-args="-screen 0 1920x1080x24" yarn test:e2e

```

--------------------------------

### Coinbase Wallet Configuration Interface

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Defines the configuration object for setting up a Coinbase wallet, including optional seed phrase, network, and custom setup functions.

```typescript
interface CoinbaseConfig {
  type: 'coinbase';
  seedPhrase?: {
    phrase: string;
    password: string;
  };
  network?: NetworkConfig;
  customSetup?: (wallet: CoinbaseWallet, context: WalletSetupContext) => Promise<void>;
}
```

--------------------------------

### Error Handling with Try-Catch Block

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Provides an example of how to wrap wallet actions in a try-catch block to handle potential errors like timeouts or rejections.

```typescript
try {
  await wallet.handleAction(BaseActionType.CONNECT_TO_DAPP);
} catch (error) {
  if (error.message.includes('timeout')) {
    // Handle timeout
  } else if (error.message.includes('rejected')) {
    // Handle rejection
  }
}
```

--------------------------------

### Advanced Coinbase Wallet Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/coinbase

Advanced configuration including network settings and custom setup actions like adding tokens and accounts.

```typescript
const coinbaseConfig = configure()
  .withCoinbase()
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'COMPLEXPASSWORD1',
  })
  .withNetwork({
    name: 'Base Sepolia',
    chainId: 84532,
    symbol: 'ETH',
    rpcUrl: 'https://sepolia.base.org',
  })
  .withCustomSetup(async (wallet, context) => {
    // Add custom tokens
    await wallet.handleAction(CoinbaseSpecificActionType.ADD_TOKEN, {
      tokenAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
      tokenSymbol: 'USDC',
      tokenDecimals: 6,
    });
    
    // Add additional accounts
    await wallet.handleAction(CoinbaseSpecificActionType.ADD_ACCOUNT, {
      accountName: 'DeFi Operations',
    });
  })
  .build();
```

--------------------------------

### Prepare Metamask and Coinbase Wallets

Source: https://onchaintestkit.xyz/onchaintestkit/quickstart

Run these commands to prepare the Metamask and Coinbase wallet extensions for testing.

```bash
yarn prepare-metamask
yarn prepare-coinbase
```

--------------------------------

### Get Node Port

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Retrieves the allocated port number for the running node instance. Returns null if the node has not been started.

```typescript
const port = node.getPort()
// Use port for configuration
```

--------------------------------

### Create Foundry Project

Source: https://onchaintestkit.xyz/onchaintestkit/smart-contracts

Initializes a new Foundry project for smart contract development.

```bash
mkdir smart-contracts && cd smart-contracts
forge init
```

--------------------------------

### configure()

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Creates a configuration builder to set up wallet and network options for onchain tests.

```APIDOC
## configure()

### Description
Creates a configuration builder.

### Signature
```typescript
function configure(): ConfigBuilder;
```
```

--------------------------------

### General Configuration Builder

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

Use the `configure()` function to chain methods for setting up wallet and network configurations for your tests.

```typescript
import { configure } from '@coinbase/onchaintestkit';

const config = configure()
  .withLocalNode({ chainId: 1337 })
  .withMetaMask()
  .withNetwork({
    name: 'Base Sepolia',
    rpcUrl: 'http://localhost:8545',
    chainId: 84532,
    symbol: 'ETH',
  })
  .withSeedPhrase({
    seedPhrase: process.env.E2E_TEST_SEED_PHRASE!,
    password: 'PASSWORD',
  })
  .build();
```

--------------------------------

### getPort()

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Retrieves the allocated port number for the node instance. Returns null if the node has not been started.

```APIDOC
## getPort()

### Description
Returns the allocated port number for this node instance, or `null` if not started.

### Method
`getPort(): number | null`

### Example
```typescript
const port = node.getPort()
// Use port for configuration
```
```

--------------------------------

### Example SimpleToken Contract

Source: https://onchaintestkit.xyz/onchaintestkit/smart-contracts

A basic ERC20 token contract with minting functionality controlled by the owner.

```solidity
// smart-contracts/src/SimpleToken.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract SimpleToken is ERC20, Ownable {
    uint256 public constant MAX_SUPPLY = 1000000 * 10**18;
    
    constructor() ERC20("Simple Token", "STK") Ownable(msg.sender) {
        _mint(msg.sender, MAX_SUPPLY / 10);
    }
    
    function mint(address to, uint256 amount) public onlyOwner {
        require(totalSupply() + amount <= MAX_SUPPLY, "Exceeds max supply");
        _mint(to, amount);
    }
}
```

--------------------------------

### initialize()

Source: https://onchaintestkit.xyz/onchaintestkit/contracts/smart-contract-manager

Initializes viem clients and ensures the proxy is deployed. This method must be called before using other methods of the SmartContractManager.

```APIDOC
## initialize(node: LocalNodeManager)

### Description
Initializes viem clients and ensures the proxy is deployed. Must be called before using other methods.

### Parameters
#### Path Parameters
- **node** (LocalNodeManager) - Required - The local node manager instance

### Returns
- **Promise<void>**
```

--------------------------------

### Initialize OnchainTestKit with Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

Import and use the createOnchainTest function with your wallet configuration to set up your testing environment.

```typescript
import { createOnchainTest } from '@coinbase/onchaintestkit';
import { metamaskWalletConfig } from './config/metamask.config';

const test = createOnchainTest(metamaskWalletConfig);

test('my test', async ({ page, metamask, node }) => {
  // Your test code here
  console.log(`Local node running on port: ${node?.port}`);
});
```

--------------------------------

### PasskeyAuthenticator Class

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

WebAuthn virtual authenticator for Coinbase Wallet. Manages the setup, creation, retrieval, and cleanup of WebAuthn credentials.

```APIDOC
## PasskeyAuthenticator

### Description
WebAuthn virtual authenticator for Coinbase Wallet. Manages the setup, creation, retrieval, and cleanup of WebAuthn credentials.

### Instance Methods
#### setup(options: PasskeySetupOptions): Promise<void>
- **Description**: Sets up the WebAuthn virtual authenticator.
- **Parameters**:
  - `options` (PasskeySetupOptions) - Options for setting up the authenticator.

#### createCredential(options: CredentialCreationOptions): Promise<PublicKeyCredential>
- **Description**: Creates a new WebAuthn credential.
- **Parameters**:
  - `options` (CredentialCreationOptions) - Options for creating the credential.
- **Returns**: `Promise<PublicKeyCredential>`

#### getCredential(options: CredentialRequestOptions): Promise<PublicKeyCredential>
- **Description**: Retrieves an existing WebAuthn credential.
- **Parameters**:
  - `options` (CredentialRequestOptions) - Options for retrieving the credential.
- **Returns**: `Promise<PublicKeyCredential>`

#### cleanup(): Promise<void>
- **Description**: Cleans up the WebAuthn virtual authenticator.
```

--------------------------------

### stop()

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Stops the running Anvil node and performs necessary cleanup of resources. Example shows a simple call to stop the node.

```APIDOC
## stop()

### Description
Stops the running Anvil node and cleans up resources.

### Method
`async stop(): Promise<void>`

### Example
```typescript
await node.stop()
```
```

--------------------------------

### Get Available Accounts

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Retrieves a list of all available Ethereum account addresses managed by the local node. These accounts are pre-funded for testing.

```typescript
const accounts = await node.getAccounts()
console.log(`Available accounts: ${accounts.length}`)
```

--------------------------------

### Get Proxy Address

Source: https://onchaintestkit.xyz/onchaintestkit/contracts/proxy-deployer

Retrieves the fixed address where the deterministic deployment proxy is deployed. This address is constant across all EVM-compatible chains.

```typescript
const proxyAddress = proxyDeployer.getProxyAddress();
console.log(`Proxy deployed at: ${proxyAddress}`);
```

--------------------------------

### Download Wallet Extensions

Source: https://onchaintestkit.xyz/onchaintestkit/quickstart

Download the MetaMask and Coinbase Wallet browser extensions required for testing.

```bash
# Download MetaMask
yarn prepare-metamask

# Download Coinbase Wallet  
yarn prepare-coinbase
```

--------------------------------

### Reset Chain State

Source: https://onchaintestkit.xyz/onchaintestkit/node/api-reference

Resets the chain state to its initial configuration or to a specified fork block. This is useful for starting tests from a clean slate.

```typescript
await node.reset(forkBlock)
```

--------------------------------

### Manage Coinbase Accounts

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/coinbase

Demonstrates adding multiple accounts and switching between them using Coinbase Wallet.

```typescript
test('manage Coinbase accounts', async ({ page, coinbase }) => {
  // Add multiple accounts
  await coinbase.handleAction(CoinbaseSpecificActionType.ADD_ACCOUNT, {
    accountName: 'Trading Account',
  });

  await coinbase.handleAction(CoinbaseSpecificActionType.ADD_ACCOUNT, {
    accountName: 'Savings Account',
  });

  // Switch to specific account
  await coinbase.handleAction(CoinbaseSpecificActionType.SWITCH_ACCOUNT, {
    accountName: 'Trading Account',
  });
});
```

--------------------------------

### Initialize SmartContractManager Clients

Source: https://onchaintestkit.xyz/onchaintestkit/contracts/smart-contract-manager

Initializes viem clients and ensures the proxy is deployed. This method must be called before using other SmartContractManager methods.

```typescript
async initialize(node: LocalNodeManager): Promise<void>
```

--------------------------------

### Optional Environment Variables for Forking and RPC

Source: https://onchaintestkit.xyz/onchaintestkit/configuration

Configure fork settings, smart contract project paths, custom RPC endpoints, and test timeouts using these environment variables.

```bash
# Fork configuration
E2E_TEST_FORK_URL="https://mainnet.base.org"
E2E_TEST_FORK_BLOCK_NUMBER="12345678"

# Smart contract project
E2E_CONTRACT_PROJECT_ROOT="../smart-contracts"

# Custom RPC endpoints
E2E_BASE_MAINNET_RPC="https://my-custom-rpc.com"
E2E_BASE_SEPOLIA_RPC="https://my-testnet-rpc.com"

# Test timeouts
E2E_TEST_TIMEOUT="60000"
```

--------------------------------

### Passkey Handling Action for Coinbase

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Shows how to handle passkey-related popups in Coinbase Wallet, specifying the action and configuration details.

```typescript
await coinbase.handleAction(CoinbaseSpecificActionType.HANDLE_PASSKEY_POPUP, {
  mainPage: page,
  popup: popup,
  passkeyAction: 'register',
  passkeyConfig: {
    name: 'Test Passkey',
    rpId: 'localhost',
    rpName: 'My dApp',
    userId: 'user123',
    isUserVerified: true
  }
});
```

--------------------------------

### Configure Function

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Initializes a configuration builder for setting up onchain tests.

```typescript
function configure(): ConfigBuilder;
```

--------------------------------

### MetaMask Wallet Configuration Interface

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Defines the configuration object for setting up a MetaMask wallet, including optional seed phrase, network, and custom setup functions.

```typescript
interface MetaMaskConfig {
  type: 'metamask';
  seedPhrase?: {
    phrase: string;
    password: string;
  };
  network?: NetworkConfig;
  customSetup?: (wallet: MetaMask, context: WalletSetupContext) => Promise<void>;
}
```

--------------------------------

### Import Wallet from Private Key (MetaMask)

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/common-actions

Imports a wallet into MetaMask using a private key.

```typescript
await metamask.handleAction(BaseActionType.IMPORT_WALLET_FROM_PRIVATE_KEY, {
    privateKey: "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
  });
```

--------------------------------

### Test Onchain Interactions with Mainnet Fork

Source: https://onchaintestkit.xyz/onchaintestkit/node/overview

Configures and starts a LocalNodeManager to fork from Ethereum mainnet at a specific block number. This allows testing interactions against a realistic, live state.

```typescript
// Fork mainnet for realistic testing
const node = new LocalNodeManager({
    chainId: 1,
    forkUrl: "https://eth-mainnet.g.alchemy.com/v2/YOUR-API-KEY",
    forkBlockNumber: 18000000n,
})

await node.start()

// Test against real mainnet state
```

--------------------------------

### ConfigBuilder Methods

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Methods available on the ConfigBuilder to customize wallet and network settings.

```APIDOC
## ConfigBuilder Methods

### withMetaMask()

Adds MetaMask wallet configuration.

### withCoinbase()

Adds Coinbase wallet configuration.

### withSeedPhrase(config: SeedPhraseConfig)

Configures the wallet with a seed phrase.

### withNetwork(network: NetworkConfig)

Sets the network configuration for the wallet.

### withLocalNode(config: LocalNodeConfig)

Configures a local node connection.

### withCustomSetup(setup: CustomSetupFunction)

Provides a custom setup function for wallet initialization.

### build(): OnchainTestConfig

Builds the final onchain test configuration.
```

--------------------------------

### Example: Manual Mining Mode Configuration

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Configure the node to disable automatic mining and set a custom block gas limit. Blocks must be mined manually using `node.mine()`.

```typescript
const node = new LocalNodeManager({
    noMining: true,
    blockGasLimit: 30_000_000n,
})

await node.start()

// Manually mine blocks when needed
await node.mine(1)
```

--------------------------------

### Deploy SimpleToken with CREATE2

Source: https://onchaintestkit.xyz/onchaintestkit/smart-contracts

Deploys the SimpleToken contract deterministically using CREATE2 with a specified salt and deployer address. Verifies deployment by checking the contract's bytecode.

```typescript
test("should deploy SimpleToken contract using CREATE2", async ({ 
  page,
  smartContractManager,
  node,
}) => {
  if (!smartContractManager || !node) {
    throw new Error("SmartContractManager or node not initialized")
  }

  // Deploy the SimpleToken contract
  const salt =
    "0x0000000000000000000000000000000000000000000000000000000000000001" as Hex
  const deployer = "0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266" as Address // Anvil's first account

  const tokenAddress = await smartContractManager.deployContract({
    name: "SimpleToken",
    args: [],
    salt,
    deployer,
  })

  // Verify the contract was deployed
  expect(tokenAddress).toBeDefined()
  expect(tokenAddress).toMatch(/^0x[a-fA-F0-9]{40}$/)

  // Create a public client to verify the deployment
  const publicClient = createPublicClient({
    chain: localhost,
    transport: http(`http://localhost:${node.port}`),
  })

  // Check the contract code exists
  const code = await publicClient.getBytecode({ address: tokenAddress })
  expect(code).toBeDefined()
  expect(code).not.toBe("0x")

  console.log(`SimpleToken deployed at: ${tokenAddress}`)
})
```

--------------------------------

### wallet.handleAction()

Source: https://onchaintestkit.xyz/onchaintestkit/wallets/api-reference

Handles various wallet actions, such as connecting to a dApp, approving transactions, or switching networks.

```APIDOC
## wallet.handleAction(actionType, options)

### Description
Handles a specific wallet action.

### Parameters
#### actionType
- **BaseActionType** (enum) - The type of action to perform (e.g., CONNECT_TO_DAPP, HANDLE_TRANSACTION, SWITCH_NETWORK).

#### options
- **object** - Optional. Options specific to the action type.
  - **approvalType** (ActionApprovalType) - For transaction handling.
  - **networkName** (string) - For network switching.
  - **isTestnet** (boolean) - For network switching.

### Example
```typescript
await wallet.handleAction(BaseActionType.CONNECT_TO_DAPP);
await wallet.handleAction(BaseActionType.HANDLE_TRANSACTION, { approvalType: ActionApprovalType.APPROVE });
await wallet.handleAction(BaseActionType.SWITCH_NETWORK, { networkName: 'Base Sepolia', isTestnet: true });
```
```

--------------------------------

### Initialize LocalNodeManager with Environment Variables

Source: https://onchaintestkit.xyz/onchaintestkit/node/configuration

Instantiate the LocalNodeManager using values from environment variables for chain ID, fork URL, fork block number, and mnemonic.

```typescript
const node = new LocalNodeManager({
    chainId: baseSepolia.id,
    forkUrl: process.env.E2E_TEST_FORK_URL,
    forkBlockNumber: BigInt(process.env.E2E_TEST_FORK_BLOCK_NUMBER ?? "0"),
    mnemonic: process.env.E2E_TEST_SEED_PHRASE,
})
```

--------------------------------

### Interact with Deployed Contract via UI

Source: https://onchaintestkit.xyz/onchaintestkit/smart-contracts

Simulates connecting a wallet (MetaMask) and interacting with a deployed contract through a web UI. Ensure MetaMask is available and configured.

```typescript
test("should connect wallet and interact with deployed contract", async ({ page, metamask, smartContractManager, node, }) => {
  if (!metamask) {
    throw new Error("MetaMask is not defined")
  }

  // Deploy contract first
  const salt =
    "0x0000000000000000000000000000000000000000000000000000000000000006" as Hex
  const deployer = "0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266" as Address

  const tokenAddress = await smartContractManager.deployContract({
    name: "SimpleToken",
    args: [],
    salt,
    deployer,
  })

  // Connect wallet to the app
  await page.getByTestId("ockConnectButton").first().click()
  await page
    .getByTestId("ockModalOverlay")
    .first()
    .getByRole("button", { name: "MetaMask" })
    .click()

  // Handle MetaMask connection
  await metamask.handleAction(BaseActionType.CONNECT_TO_DAPP)

  // Verify wallet is connected
  await page.waitForSelector("text=/0x[a-fA-F0-9]{4}.*[a-fA-F0-9]{4}/", {
    timeout: 10000,
  })

  // Now the user could interact with the deployed contract through the UI
  console.log(`User can now interact with token at: ${tokenAddress}`)
})
```