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CosmosRpc Class

The CosmosRpc class allows interaction with the Coreum blockchain through RPC calls. It provides methods for retrieving chain information, account details, balances, sending transactions, and more.

Installation

To use the CosmosRpc class, you need to have the required dependencies installed. Run the following command:

npm install @web5nexus/web3auth-core

Usage

Importing the Module

To use the CosmosRpc class, you need to import it from the @web5nexus/web3auth-core module. You can use the following import statement:

import CosmosRpc from '@web5nexus/web3auth-core';

Creating an Instance

To interact with the Coreum blockchain, create an instance of the CosmosRpc class by providing the blockchain name, network name, and a SafeEventEmitterProvider instance. For example:

const blockchain = 'coreum'; // Specify the blockchain name
const network = 'testnet'; // Specify the network name
const provider = ...; // Provide the SafeEventEmitterProvider
const rpc = new CosmosRpc(blockchain, network, provider);

Replace ... with the appropriate code or value to initialize the SafeEventEmitterProvider instance. This instance is required for handling events and communication with the blockchain.

Methods

The CosmosRpc class provides the following methods:

getChainId()

Retrieves the connected blockchain's Chain ID.

const chainId = await rpc.getChainId();
console.log('Chain ID:', chainId);
getAccounts()

Retrieves the user's accounts on the Coreum blockchain.

const accounts = await rpc.getAccounts();
console.log('Accounts:', accounts);
getBalance()

Retrieves the balance of the user's account on the Coreum blockchain.

const balance = await rpc.getBalance();
console.log('Balance:', balance);
sendTransaction(amount, toAddress, gasFee, gasLimit)

Sends a transaction on the Coreum blockchain.

  • amount (string): The amount to send in the smallest unit (e.g., microcosm, femtocoin, etc.).
  • toAddress (string): The recipient's address.
  • gasFee (string, optional): The gas fee for the transaction (default: undefined).
  • gasLimit (string, optional): The gas limit for the transaction (default: undefined).
const amount = '1000000000'; // Amount in smallest unit
const toAddress = 'cosmos1...'; // Specify the recipient's address
const gasFee = '10000'; // Specify the gas fee (optional)
const gasLimit = '200000'; // Specify the gas limit (optional)
 
const result = await rpc.sendTransaction(amount, toAddress, gasFee, gasLimit);
console.log('Transaction Hash:', result.transactionHash);
console.log('Block Height:', result.height);
getPrivateKey()

Retrieves the private key associated with the provider.

const privateKey = await rpc.getPrivateKey();
console.log('Private Key:', privateKey);

Example

Here's an example that demonstrates the usage of the CosmosRpc class methods:

// Import the necessary modules
import CosmosRpc from '@web5nexus/web3auth-core';
 
// Create an instance of the CosmosRpc class
const blockchain = 'coreum'; // Specify the blockchain name
const network = 'testnet'; // Specify the network name
const provider = ...; // Provide the SafeEventEmitterProvider
const rpc = new CosmosRpc(blockchain, network, provider);
 
// Example usage of the CosmosRpc methods
// ...
 
``
 
`
 
Make sure to replace `...` with the appropriate code or value to initialize the `SafeEventEmitterProvider` instance.
 
### Conclusion
 
The `CosmosRpc` class provides a convenient way to interact with the Coreum blockchain through RPC calls. You can use its methods to retrieve chain information, account details, balances, send transactions, and more.
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