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app.js
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
// Required libraries
var Web3 = require('web3');
var Tx = require('ethereumjs-tx').Transaction;
var promptSync = require('prompt-sync')();
var _a = require('get-eth-price'), getEthPriceNow = _a.getEthPriceNow, getEthPriceHistorical = _a.getEthPriceHistorical;
var networkParameters = {
'ethereum': {
chain: 'ethereum',
chainId: 1,
rpc_url: 'https://mainnet.infura.io/v3/007a8a93a36c4d5caa6191fa9bedf65b'
},
'ropsten': {
chain: 'ropsten',
chainId: 3,
rpc_url: 'https://ropsten.infura.io/v3/007a8a93a36c4d5caa6191fa9bedf65b'
},
'rinkeby': {
chain: 'rinkeby',
chainId: 4,
rpc_url: 'https://rinkeby.infura.io/v3/007a8a93a36c4d5caa6191fa9bedf65b'
}
};
var networkName = promptSync("Network: [\"ethereum\", \"rinkeby\", \"ropsten\"]");
// Accessing the Ropsten testnet
var web3 = new Web3(networkParameters[networkName].rpc_url);
function getEthEurConversionRate() {
return __awaiter(this, void 0, void 0, function () {
var conversionData, currentDate, ethPriceInEur;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, getEthPriceNow()];
case 1:
conversionData = _a.sent();
currentDate = Object.keys(conversionData)[0];
conversionData = conversionData[Object.keys(conversionData)[0]];
ethPriceInEur = conversionData[Object.keys(conversionData)[0]].EUR;
console.log("1 ETH = " + ethPriceInEur + " EUR [" + currentDate + "]");
return [2 /*return*/];
}
});
});
}
function getSignedTx(txData, privateKey) {
var tx = new Tx(txData, { chain: networkName }); // create transaction object with correct data
tx.sign(privateKey); // sign the transaction
var serializedTransaction = tx.serialize(); // convert the transaction into a hex string
return '0x' + serializedTransaction.toString('hex');
}
function showTxReceipt(txHash) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, web3.eth.getTransaction(txHash).then(console.log)];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
}
function broadcastTx(_from, _privateKey, _to, _value) {
return __awaiter(this, void 0, void 0, function () {
var privateKey, txCount, txData, signedTx;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
privateKey = Buffer.from(_privateKey, 'hex');
return [4 /*yield*/, web3.eth.getTransactionCount(_from)];
case 1:
txCount = _a.sent();
txData = {
nonce: web3.utils.toHex(txCount),
from: _from,
to: _to,
value: web3.utils.toHex(web3.utils.toWei(_value, 'ether')),
gasLimit: web3.utils.toHex(21000),
gasPrice: web3.utils.toHex(web3.utils.toWei('10', 'gwei'))
};
signedTx = getSignedTx(txData, privateKey);
// Broadcast it
web3.eth.sendSignedTransaction(signedTx, function (err, txHash) { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (!err) {
// let receipt = await web3.eth.getTransaction(txHash);
console.log('Transaction succeeded.');
// console.log(`Receipt:\n ${receipt.resolve(receipt)}`);
showTxReceipt(txHash);
}
else {
console.log(err);
}
return [2 /*return*/];
});
}); });
return [2 /*return*/];
}
});
});
}
function runApp() {
return __awaiter(this, void 0, void 0, function () {
var fromAccount, privateKey, toAccount, ammount;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
fromAccount = promptSync('From account:');
privateKey = promptSync('Private key:');
toAccount = promptSync('To account:');
console.log('\n');
return [4 /*yield*/, getEthEurConversionRate()];
case 1:
_a.sent();
ammount = promptSync('Ammount (ETH):');
broadcastTx(fromAccount, privateKey, toAccount, ammount);
return [2 /*return*/];
}
});
});
}
runApp();