Towards LLM-Based System Migration in Language-Driven Engineering

In this paper we show how our approach of extending Language Driven Engineering (LDE) with natural language-based code generation supports system migration: The characteristic decomposition of LDE into tasks that are solved with dedicated domain-specific languages divides the migration tasks into portions adequate to apply LLM-based code generation. We illustrate this effect by migrating a low-code/no-code generator for point-and-click adventures from JavaScript to TypeScript in a way that maintains an important property: generated web applications can automatically be validated via automata learning and model analysis by design. In particular, this allows to easily test the correctness of migration by learning the difference automaton for the generated products of the source and the target system of the migration.