DDT-SplitFullName.js

const { utils } = require('dynamo-data-transform');

const TABLE_NAME = 'UsersExample';

/**
 * The tool supply following parameters:
 * @param {DynamoDBDocumentClient} ddb - dynamo db document client https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-dynamodb
 * @param {boolean} isDryRun - true if this is a dry run
 */
const transformUp = async ({ ddb, isDryRun }) => {
  const addFirstAndLastName = (item) => {
    // Just for the example:
    // Assume the FullName has one space between first and last name
    const [firstName, ...lastName] = item.name.split(' ');
    return {
      ...item,
      firstName,
      lastName: lastName.join(' '),
    };
  };
  return utils.transformItems(ddb, TABLE_NAME, addFirstAndLastName, isDryRun);
};

module.exports = {
  transformUp,
  transformationNumber: 1,
};