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+20 XP
6/12
Challenge: Multi-Wallet Balance Checker
Build a function that checks the SOL balance of multiple wallets and returns formatted results.
Requirements
- Create an async function that accepts a
Connectionand an array ofPublicKeyobjects - For each wallet, fetch the balance using
connection.getBalance() - Convert lamports to SOL (divide by
LAMPORTS_PER_SOL) - Return an array of objects with
publicKey(base58 string) andbalanceInSol(number, rounded to 4 decimals) - Use
Promise.all()to fetch all balances in parallel
Test Cases
Should return array of { publicKey, balanceInSol }
Input:
connection, walletsExpected: Array.isArray(result) && result.length > 0 && typeof result[0].publicKey === 'string' && typeof result[0].balanceInSol === 'number'Balance should be correctly converted from lamports to SOL
Input:
connection, walletsExpected: result[0].balanceInSol === 2