DDBIfAnyValueChangedCondition creates a conditional update expression that will only allow a table item to update if one of the field values provided in ifAttributeValuesChanged is different than the currently-stored values.

DDBSetRevisionForUpdate adds a DynamoDB SET operation to an UpdateBuilder, which sets the value of an item's "revision" attribute to a freshly-generated ULID string.

GetConfig returns an AWS SDK v2 Config with a custom resolver that resolves SDK requests to an endpoint at http://$LOCALSTACK_HOSTNAME:4566 when $LOCALSTACK_HOSTNAME is configured in the current environment.