@check ====== This alias corresponds to the set of targets necessary for development tools to work correctly. For example, it will build ``*.cmi``, ``*.cmt``, and ``*.cmti`` files so that Merlin and ``ocaml-lsp-server`` can be used in the project. It is also useful in the development loop because it will catch compilation errors without executing expensive operations such as linking executables. .. seealso:: :doc:`ocaml-index` for a fast feedback loop that also indexes the project.