web3-eth
Version:
Web3 module to interact with the Ethereum blockchain and smart contracts.
41 lines • 2.75 kB
JavaScript
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());
});
};
import { format, numberToHex } from 'web3-utils';
import { ethRpcMethods } from 'web3-rpc-methods';
import { transactionReceiptSchema } from '../schemas.js';
/**
* This function watches a Transaction by subscribing to new heads.
* It is used by `watchTransactionForConfirmations`, in case the provider does not support subscription.
* And it is also used by `watchTransactionBySubscription`, as a fallback, if the subscription failed for any reason.
*/
export const watchTransactionByPolling = ({ web3Context, transactionReceipt, transactionPromiEvent, customTransactionReceiptSchema, returnFormat, }) => {
var _a;
// Having a transactionReceipt means that the transaction has already been included
// in at least one block, so we start with 1
let confirmations = 1;
const intervalId = setInterval(() => {
(() => __awaiter(void 0, void 0, void 0, function* () {
if (confirmations >= web3Context.transactionConfirmationBlocks) {
clearInterval(intervalId);
return;
}
const nextBlock = yield ethRpcMethods.getBlockByNumber(web3Context.requestManager, numberToHex(BigInt(transactionReceipt.blockNumber) + BigInt(confirmations)), false);
if (nextBlock === null || nextBlock === void 0 ? void 0 : nextBlock.hash) {
confirmations += 1;
transactionPromiEvent.emit('confirmation', {
confirmations: format({ format: 'uint' }, confirmations, returnFormat),
receipt: format(customTransactionReceiptSchema !== null && customTransactionReceiptSchema !== void 0 ? customTransactionReceiptSchema : transactionReceiptSchema, transactionReceipt, returnFormat),
latestBlockHash: format({ format: 'bytes32' }, nextBlock.hash, returnFormat),
});
}
}))();
}, (_a = web3Context.transactionReceiptPollingInterval) !== null && _a !== void 0 ? _a : web3Context.transactionPollingInterval);
};
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