transactions_array_fns.js

// Ensure the input is an array
if (!Array.isArray(input.transactions)) {
    log('Input is not an array');
    return output;
}

// Calculate total amount
let totalAmount = input.transactions.reduce((sum, transaction) => sum + transaction, 0);

// Calculate average transaction value
let averageTransactionValue = totalAmount / input.transactions.length || 0;

// Find the top three highest transactions
let topThreeTransactions = input.transactions
    .sort((a, b) => b - a)
    .slice(0, 3);

// Assigning computed values to the output properties
output.totalAmount = totalAmount;
output.averageTransactionValue = averageTransactionValue;
output.topThreeTransactions = topThreeTransactions;

// Ensure the results will be passed to the rule output
return output;