@vechain/sdk-network/src/provider/utils/rpc-mapper/methods/eth_blockNumber/eth_blockNumber.ts

This module serves as the standard interface connecting decentralized applications (dApps) and users to the VeChainThor blockchain

import { JSONRPCInternalError, stringifyData } from '@vechain/sdk-errors';
import { type ThorClient } from '../../../../../thor-client';

/**
 * RPC Method eth_blockNumber implementation
 *
 * @link [eth_blockNumber](https://ethereum.github.io/execution-apis/api-documentation/)
 *
 * @param thorClient - The thor client instance to use.
 * @returns the latest block number as a hex string. If the block number cannot be retrieved, it will return '0x0'
 * @throws {JSONRPCInternalError}
 */
const ethBlockNumber = async (thorClient: ThorClient): Promise<string> => {
    try {
        // 'best' is the alias for 'latest' in VeChainThorest
        const latestBlock = await thorClient.blocks.getBestBlockCompressed();

        return latestBlock?.number !== undefined
            ? `0x${latestBlock.number.toString(16)}`
            : '0x0';
    } catch (e) {
        throw new JSONRPCInternalError(
            'eth_blockNumber()',
            'Method "eth_blockNumber" failed.',
            {
                url: thorClient.httpClient.baseURL,
                innerError: stringifyData(e)
            }
        );
    }
};

export { ethBlockNumber };