crsepulv

/**
 * Recursive function to get UpdateExpression,ExpressionAttributeValues & ExpressionAttributeNames to update a nested object on dynamoDB
 * All levels of the nested object must exist previously on dynamoDB, this only update the value, does not create the branch.
 * Only works with objects of objects, not tested with Arrays.
 * @param obj , the object to update.
 * @param k , the seed is any value, takes sense on the last iteration.
 */
function getDynamoExpression(obj, k) {

    const key = Object.keys(obj);