✨ | add viem playground

viem-playground/contracts/Storage.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+contract Storage {
+    string message;
+
+    function store(string memory _message) public {
+        message = _message;
+    }
+
+    function retrieve() public view returns (string memory) {
+        return message;
+    }
+}

viem-playground/hardhat.config.cjs

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+/** @type import('hardhat/config').HardhatUserConfig */
+module.exports = {
+  solidity: '0.8.28',
+}

viem-playground/index.ts

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+import { createTestClient, http, publicActions, walletActions } from 'viem'
+import { hardhat } from 'viem/chains'
+import { readFileSync } from 'fs'
+import solc from 'solc'
+
+const client = createTestClient({
+  chain: hardhat,
+  mode: 'hardhat',
+  transport: http(),
+})
+  .extend(publicActions)
+  .extend(walletActions)
+
+const [account] = await client.getAddresses()
+console.log('Address:', account)
+
+console.log('Chain ID:', client.chain.id)
+
+const CONTRACT_FILE = 'contracts/Storage.sol'
+
+const content = readFileSync(CONTRACT_FILE).toString()
+
+const input = {
+  language: 'Solidity',
+  sources: {
+    [CONTRACT_FILE]: {
+      content: content,
+    },
+  },
+  settings: {
+    outputSelection: {
+      '*': {
+        '*': ['*'],
+      },
+    },
+  },
+}
+
+const compiled = solc.compile(JSON.stringify(input))
+const output = JSON.parse(compiled)
+
+const abi = output.contracts[CONTRACT_FILE].Storage.abi
+const bytecode = output.contracts[CONTRACT_FILE].Storage.evm.bytecode.object
+
+let hash = await client.deployContract({ abi, account, bytecode, args: [] })
+console.log('Transaction Hash:', hash)
+
+const receipt = await client.getTransactionReceipt({
+  hash,
+})
+
+const { request } = await client.simulateContract({
+  abi,
+  account,
+  address: receipt.contractAddress!,
+  functionName: 'store',
+  args: ['Hello, KBA!'],
+})
+
+hash = await client.writeContract(request)
+console.log('Transaction Hash:', hash)
+
+const message = await client.readContract({
+  abi,
+  address: receipt.contractAddress!,
+  functionName: 'retrieve',
+  args: [],
+})
+console.log('Message:', message)
+
+const latestBlock = await client.getBlockNumber()
+console.log('Latest Block:', latestBlock)

viem-playground/package.json

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+{
+  "name": "viem-playground",
+  "module": "index.ts",
+  "type": "module",
+  "scripts": {
+    "node": "hardhat node"
+  },
+  "dependencies": {
+    "hardhat": "^2.22.17",
+    "solc": "^0.8.28",
+    "tsx": "^4.19.2",
+    "viem": "^2.21.57"
+  }
+}

viem-playground/solc.d.ts

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+declare module 'solc'

viem-playground/tsconfig.json

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+{
+  "compilerOptions": {
+    // Enable latest features
+    "lib": ["ESNext", "DOM"],
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleDetection": "force",
+    "allowJs": true,
+
+    // Bundler mode
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+
+    // Best practices
+    "strict": true,
+    "skipLibCheck": true,
+    "noFallthroughCasesInSwitch": true,
+
+    // Some stricter flags (disabled by default)
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noPropertyAccessFromIndexSignature": false
+  }
+}