Solana: How to get the proper solana wallet address in typescript?

Here’s an article on how to get a proper Solana wallet address in TypeScript:

Getting a Proper Solana Wallet Address in TypeScript

In this article, we’ll explore the steps to obtain a valid Solana wallet address using TypeScript and the @solana/web3.js library.

Prerequisites

Before proceeding, ensure you have the following installed:

• Node.js (version 16 or higher)

• @solana/web3.js package

• A Solana CLI installation

Importing Dependencies

To get started, import the necessary dependencies:

import { Keypair } from '@solana/web3.js';

import * as bip39 from 'bip39';

import bs58 from 'bs58';


// Import keypair functions for mnemonic-based seed derivation

const deriveKey = require('./deriveKey');

const generateSeedFromMnemonic = require('./generateSeedFromMnemonic');


// Import other utility functions as needed

Deriving a Wallet Address from a Mnemonic

To create a wallet address using a mnemonic seed, we’ll use the deriveKey function. This function takes a mnemonic seed and generates a Keypair instance.

const mnemonic = 'your_mnemonic_seed_here'; // Replace with your actual mnemonic seed


// Generate a Keypair instance from the mnemonic seed

const keypair = deriveKey(mnemonic);

Converting a Keypair to a Solana Wallet Address

A Solana wallet address is represented as a URL-encoded string. We’ll convert our keypair object into this format using the urlEncode function.

// Convert the Keypair instance to a Solana wallet address URL

const walletAddress = keypair.publicKey.url;

Checking for Validity

To ensure the generated address is valid, we can use the isSolanaWalletAddress function from the @solana/web3.js library.

// Check if the generated address is a Solana wallet address

const isValid = isSolanaWalletAddress(walletAddress);

Putting it all together

Here’s the complete code example:

import { Keypair } from '@solana/web3.js';

import * as bip39 from 'bip39';

import bs58 from 'bs58';


// Import keypair functions for mnemonic-based seed derivation

const deriveKey = require('./deriveKey');

const generateSeedFromMnemonic = require('./generateSeedFromMnemonic');


// Define a function to convert a Solana wallet address URL to a Keypair instance

function toKeypair(url: string): Keypair {

  // Convert the URL-encoded string to a Keypair instance

  return deriveKey(generateSeedFromMnemonic(mnemonic, url));

}


// Define a function to check if a generated address is valid

function isValidWalletAddress(address: string): boolean {

  try {

    const keypair = toKeypair(address);

    // Check if the generated address is a Solana wallet address

    return isSolanaWalletAddress(keypair.publicKey.url);

  } catch (error) {

    // Handle errors or invalid inputs

    console.error(error);

    return false;

  }

}


// Example usage:

const mnemonic = 'your_mnemonic_seed_here'; // Replace with your actual mnemonic seed

const walletAddress = toKeypair(mnemonic);


if (isValidWalletAddress(walletAddress.publicKey.url)) {

  console.log(Valid Solana wallet address: ${walletAddress.publicKey.url});

} else {

  console.error('Invalid Solana wallet address');

}

This code example demonstrates how to derive a wallet address from a mnemonic seed, convert the generated Keypair instance into a URL-encoded string, and check if it’s a valid Solana wallet address.

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