<src/tool/tool_js*> or <src/platform/js/*> or <src/booth/*>: package(js_of_ocaml), syntax(camlp4o), package(js_of_ocaml.syntax), use_platform-js
<src/tool/tool_js*> or <src/platform/js/*> or <src/booth/*>: package(js_of_ocaml), syntax(camlp4o), package(js_of_ocaml.syntax), package(lwt.syntax), use_platform-js