Merge #1286

1286: Basic CLI util to transfer ETH r=popzxc a=StanislavBreadless

A tool that takes the following parameters:

`-pk, --private-key <private-key>` -- the `0x`-prefixed private key of the sender.
`-t, --target <target>` -- the `0x`-prefixed Ethereum address of the recipient.
`-n, --network <network>` -- the Ethereum network.
`-a, --amount <amount>` -- the amount of the Ethereum to be sent.

Tested on Rinkeby. It works.

Co-authored-by: Stanislav Bezkorovainyi <[email protected]>

infrastructure/eth_transfer/.gitignore

@@ -0,0 +1 @@
+/build

infrastructure/eth_transfer/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "eth_transfer",
+  "version": "0.0.1",
+  "description": "CLI tool for transfering ETH",
+  "main": "build/index.js",
+  "bin": "build/index.js",
+  "repository": "https://github.com/matter-labs/zksync-dev.git",
+  "author": "The Matter Labs Team",
+  "license": "MIT",
+  "scripts": {
+    "build": "tsc",
+    "watch": "tsc --watch",
+    "start": "node build/index.js"
+  },
+  "devDependencies": {
+    "typescript": "^4.0.2"
+  },
+  "dependencies": {
+    "commander": "^6.0.0",
+    "ethers": "^5.0.18"
+  }
+}

infrastructure/eth_transfer/src/index.ts

@@ -0,0 +1,45 @@
+import { Command } from 'commander';
+import { ethers, Wallet } from 'ethers';
+
+const program = new Command();
+program.version('0.0.1');
+
+program
+    .option('-pk, --private-key <private-key>', 'private key of the sender')
+    .option('-t, --target <target>', 'address of the target account')
+    .option('-n, --network <network>', 'eth network')
+    .option('-a, --amount <amount>', 'amount of the ETH to be sent');
+
+program.parse(process.argv);
+
+function getProvider(network: string) {
+    if (network === 'localhost') {
+        return new ethers.providers.JsonRpcProvider('http://localhost:8545');
+    }
+
+    return ethers.providers.getDefaultProvider(network);
+}
+
+async function main() {
+    const { privateKey, target, amount, network } = program;
+
+    const provider = getProvider(network || 'mainnet');
+    const wallet = new Wallet(privateKey).connect(provider);
+
+    let tx = {
+        to: target,
+        value: ethers.utils.parseEther(amount)
+    };
+
+    try {
+        const txResponse = await wallet.sendTransaction(tx);
+        console.log('Transaction was sent! Hash: ', txResponse.hash);
+    } catch (err) {
+        console.log('Failed to send tx. Reason: ', err.message || err);
+    }
+}
+
+main().catch((err: Error) => {
+    console.error('Error:', err.message || err);
+    process.exitCode = 1;
+});

infrastructure/eth_transfer/tsconfig.json

@@ -0,0 +1,15 @@
+{
+    "compilerOptions": {
+        "target": "es2019",
+        "module": "commonjs",
+        "outDir": "build",
+        "strict": true,
+        "esModuleInterop": true,
+        "noEmitOnError": true,
+        "skipLibCheck": true,
+        "declaration": true
+    },
+    "files": [
+        "src/index.ts"
+    ]
+}

package.json

@@ -13,6 +13,7 @@
       "infrastructure/zcli",
       "infrastructure/explorer",
       "infrastructure/zk",
+      "infrastructure/eth_transfer",
       "core/tests/ts-tests"
     ],
     "nohoist": [