RPC Node Client (TypeScript)

A minimal TypeScript client for interacting with JSON-RPC nodes, such as those used by Ethereum, Bitcoin, or other blockchains. This client allows you to make RPC calls and handle responses simply and efficiently.

Features

• Send JSON-RPC requests to any RPC node
• Easy-to-use TypeScript API
• Handles method calls and error responses

Installation

First, install the required dependency:

npm install node-fetch

Usage

1. Create the client instance:

import { RpcNodeClient } from './RpcNodeClient';

const rpc = new RpcNodeClient('https://mainnet.infura.io/v3/YOUR_PROJECT_ID');

2. Make an RPC call:

rpc.call('eth_blockNumber')
  .then(blockNumber => {
    console.log('Latest block number:', blockNumber);
  })
  .catch(error => {
    console.error('Error:', error);
  });

Example

import { RpcNodeClient } from './RpcNodeClient';

async function main() {
  const rpc = new RpcNodeClient('https://mainnet.infura.io/v3/YOUR_PROJECT_ID');
  try {
    const blockNumber = await rpc.call('eth_blockNumber');
    console.log('Latest block number:', blockNumber);
  } catch (error) {
    console.error('RPC Error:', error);
  }
}

main();

API

RpcNodeClient

Constructor

new RpcNodeClient(url: string)

• url: The endpoint of the RPC node.

Methods

call(method: string, params?: any[]): Promise<any>

• method: The RPC method name (e.g., eth_blockNumber, eth_getBalance)
• params: Array of parameters for the RPC method (optional)

License

MIT