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/**
 * Utility functions for data processing
 */

/**
 * Processes an array of data items
 * @param {Array} data - The data to process
 * @returns {Array} - The processed data
 */
function processData(data) {
  if (!Array.isArray(data)) {
    throw new Error('Input must be an array');
  }
  
  return data.map(item => transformItem(item))
    .filter(item => validateItem(item));
}

/**
 * Transforms a single data item
 * @param {Object} item - The item to transform
 * @returns {Object} - The transformed item
 */
function transformItem(item) {
  return {
    ...item,
    processed: true,
    timestamp: new Date().toISOString()
  };
}

/**
 * Validates a data item
 * @param {Object} item - The item to validate
 * @returns {boolean} - Whether the item is valid
 */
function validateItem(item) {
  return item && item.id && item.name;
}

module.exports = {
  processData
};