Try it out
- clone the github project.
- install MPS version 3.3 .
- open the project with MPS.
- rebuild the project.
An EcmaScript4MPS plugin
To get a pre-prepared and packaged ecmaScript4mps language you can install the IDEA/MPS plugin in either IntelliJ IDEA or MPS and start using the language right-away.
ECMAScript4MPS is rather primitive with respect to its editing capabilities that are still "AST like" and not "text like". Also it's missing almost all "lexer like" rules.
Writing a developer's guide that could help other developers understanding MPS is also one of my goals.