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feat: support mint and borrow flow (#301)
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‎package-lock.json‎

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‎package.json‎

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"tsx": "^4.19.4",
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"typescript": "^5.8.3",
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"typescript-eslint": "^8.44.1",
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"uuid": "11.1.0"
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"uuid": "11.1.0",
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"vite-plugin-top-level-await": "^1.6.0"
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},
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"workspaces": [
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"packages/*",

‎packages/babylon-config/README.md‎

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# @babylonlabs-io/config
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Shared configuration package for Babylon Labs applications.
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## Purpose
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Centralized network configurations for ETH, BTC, and BBN chains used across all Babylon services and routes.
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## Installation
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```bash
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npm install @babylonlabs-io/config
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```
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## Usage
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### ETH Configuration
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```typescript
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import { getNetworkConfigETH, getETHChain, network } from '@babylonlabs-io/config';
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// Get current network configuration
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const config = getNetworkConfigETH();
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console.log(config.chainId); // 1, 11155111, or 31337
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// Get viem Chain object
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const chain = getETHChain();
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// Get current network name
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console.log(network); // 'mainnet', 'testnet', or 'localhost'
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```
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### Environment Variables
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- `NEXT_PUBLIC_NETWORK` - Network selection: `mainnet`, `testnet`, `localhost`, etc.
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- `NEXT_PUBLIC_ETH_CHAIN_ID` - Override chain ID
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- `NEXT_PUBLIC_ETH_RPC_URL` - Override RPC URL
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## Supported Networks
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### ETH
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- **Mainnet** (chainId: 1)
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- **Sepolia Testnet** (chainId: 11155111)
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- **Localhost/Anvil** (chainId: 31337)
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## Architecture
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This package provides the base configuration that can be extended by services:
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```
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packages/babylon-config (base)
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└── services/simple-staking (extends with UI-specific properties like icons)
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└── routes/vault (uses base directly)
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```
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## Development
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```bash
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# Type check
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npm run typecheck
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# Lint
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npm run lint
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```

‎packages/babylon-config/package.json‎

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{
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"name": "@babylonlabs-io/config",
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"version": "1.0.0",
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"private": true,
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"type": "module",
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"main": "src/index.ts",
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"types": "src/index.ts",
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"exports": {
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".": {
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"types": "./src/index.ts",
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"default": "./src/index.ts"
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},
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"./network/*": "./src/network/*"
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},
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"scripts": {
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"lint": "eslint",
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"typecheck": "tsc --noEmit"
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},
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"dependencies": {
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"@babylonlabs-io/wallet-connector": "*",
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"viem": "^2.37.9"
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},
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"devDependencies": {
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"@internal/eslint-config": "*",
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"typescript": "^5.8.3"
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}
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}

‎packages/babylon-config/src/index.ts‎

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// Network configurations
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export * from './network/eth';

‎packages/babylon-config/src/network/eth.ts‎

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import type { ETHConfig } from "@babylonlabs-io/wallet-connector";
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import { mainnet, sepolia } from "viem/chains";
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import type { Chain } from "viem";
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import { defineChain } from "viem";
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// Define localhost/Anvil chain (31337) since viem's localhost is 1337
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export const localhost = defineChain({
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id: 31337,
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name: 'Localhost',
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nativeCurrency: {
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decimals: 18,
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name: 'Ether',
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symbol: 'ETH',
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},
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rpcUrls: {
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default: {
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http: ['http://127.0.0.1:8545'],
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},
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},
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});
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const defaultNetwork = "testnet";
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// Export network for modules that need to know which network is active
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export const network = process.env.NEXT_PUBLIC_NETWORK ?? defaultNetwork;
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// Extended config type for UI-specific properties
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export type ExtendedETHConfig = ETHConfig & {
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name: string;
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displayUSD: boolean;
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};
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type Config = ExtendedETHConfig;
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const config: Record<string, Config> = {
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mainnet: {
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name: "Ethereum",
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chainId: 1,
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chainName: "Ethereum Mainnet",
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rpcUrl: process.env.NEXT_PUBLIC_ETH_RPC_URL || "https://eth.llamarpc.com",
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explorerUrl: "https://etherscan.io",
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nativeCurrency: {
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name: "Ether",
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symbol: "ETH",
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decimals: 18,
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},
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displayUSD: true,
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},
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canary: {
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// Using Sepolia for canary
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name: "Ethereum Sepolia",
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chainId: 11155111,
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chainName: "Sepolia Testnet",
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rpcUrl: process.env.NEXT_PUBLIC_ETH_RPC_URL || "https://rpc.sepolia.org",
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explorerUrl: "https://sepolia.etherscan.io",
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nativeCurrency: {
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name: "Sepolia ETH",
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symbol: "ETH",
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decimals: 18,
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},
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displayUSD: false,
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},
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testnet: {
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name: "Ethereum Sepolia",
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chainId: 11155111,
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chainName: "Sepolia Testnet",
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rpcUrl: process.env.NEXT_PUBLIC_ETH_RPC_URL || "https://rpc.sepolia.org",
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explorerUrl: "https://sepolia.etherscan.io",
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nativeCurrency: {
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name: "Sepolia ETH",
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symbol: "ETH",
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decimals: 18,
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},
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displayUSD: false,
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},
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devnet: {
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name: "Ethereum Sepolia",
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chainId: 11155111,
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chainName: "Sepolia Testnet",
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rpcUrl: process.env.NEXT_PUBLIC_ETH_RPC_URL || "https://rpc.sepolia.org",
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explorerUrl: "https://sepolia.etherscan.io",
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nativeCurrency: {
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name: "Sepolia ETH",
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symbol: "ETH",
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decimals: 18,
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},
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displayUSD: false,
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},
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localhost: {
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name: "Local Anvil",
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chainId: 31337,
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chainName: "Localhost",
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rpcUrl: process.env.NEXT_PUBLIC_ETH_RPC_URL || "http://localhost:8545",
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explorerUrl: "",
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nativeCurrency: {
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name: "Ether",
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symbol: "ETH",
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decimals: 18,
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},
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displayUSD: false,
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},
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};
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export function getNetworkConfigETH(): Config {
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// Use the chain ID from environment if available
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const chainId = parseInt(process.env.NEXT_PUBLIC_ETH_CHAIN_ID || "0");
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// If chain ID is set, use chain ID-based config
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if (chainId === 1) {
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return config.mainnet;
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} else if (chainId === 31337) {
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return config.localhost;
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} else if (chainId === 11155111) {
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return config.testnet;
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}
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// Otherwise use the network-based config
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if (network === "localhost") {
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return config.localhost;
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}
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return config[network] ?? config[defaultNetwork];
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}
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/**
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* Get viem Chain object for the current network configuration
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* Used by contract clients that need Chain object
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*/
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export function getETHChain(): Chain {
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const config = getNetworkConfigETH();
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// Map chainId to viem chain object
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switch (config.chainId) {
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case 1:
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return mainnet;
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case 11155111:
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return sepolia;
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case 31337:
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return localhost;
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default:
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// Default to testnet (Sepolia)
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return sepolia;
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}
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}
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/**
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* Validate Ethereum address format
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* @param address - Address to validate
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* @throws Error if address format is invalid
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*/
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export function validateETHAddress(address: string): void {
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// Basic ETH address validation
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if (!address.match(/^0x[a-fA-F0-9]{40}$/)) {
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throw new Error(
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"Invalid Ethereum address format. Expected address to start with '0x' followed by 40 hexadecimal characters."
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);
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}
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// TODO: Add checksum validation when needed
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}

‎packages/babylon-config/tsconfig.json‎

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{
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"extends": "../../tsconfig.base.json",
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"compilerOptions": {
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"lib": ["ES2022"],
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"target": "ES2022",
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"module": "ESNext",
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"moduleResolution": "bundler",
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"allowImportingTsExtensions": true,
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"noEmit": true,
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"strict": true,
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"skipLibCheck": true,
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"resolveJsonModule": true,
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"isolatedModules": true
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},
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"include": ["src/**/*"],
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"exclude": ["node_modules", "dist"]
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}

‎packages/babylon-wallet-connector/src/core/wallets/eth/appkit/index.ts‎

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import type { ETHConfig, IETHProvider, WalletMetadata } from "@/core/types";
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import { Network } from "@/core/types";
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import { AppKitProvider } from "./provider";
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const WALLET_PROVIDER_NAME = "AppKit";
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networks: [
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Network.MAINNET, // ETH mainnet (chainId: 1)
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Network.TESTNET, // ETH testnet (chainId: 11155111 - Sepolia)
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Network.SIGNET, // Also allow SIGNET/devnet/localhost environments
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],
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label: "Connect ETH Wallet",
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};

‎routes/vault/package.json‎

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"tailwind-merge": "2.5.4"
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},
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"dependencies": {
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"@babylonlabs-io/config": "*",
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"@babylonlabs-io/core-ui": "*",
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"@babylonlabs-io/wallet-connector": "*",
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"@wagmi/core": "^2.16.3",

‎routes/vault/src/clients/eth-contract/client.ts‎

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// Shared ETH client singleton for all contract interactions
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import { createPublicClient, http, type PublicClient } from 'viem';
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import { getNetworkConfigETH } from '../../config/network';
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import { getNetworkConfigETH, getETHChain } from '@babylonlabs-io/config';
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/**
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* ETHClient - Singleton client for Ethereum interactions
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private constructor() {
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// Create public client with config from environment
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this.publicClient = createPublicClient({
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chain: this.config.chain,
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chain: getETHChain(),
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transport: http(this.config.rpcUrl),
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});
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}

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