Modify the Programming Language

By default, when you install cadet-frontend, npm uses the latest version of js-slang available here. However, you can change the programming language implementation that is used by the Frontend (for example, in the Playground), by giving it a different js-slang distribution, possibly one that you modified.

In order to run your own cadet-frontend development version using your own language implementation, do the following:

• Follow the cadet-frontend Installation README
• Change your frontend if needed; build the frontend if needed
• The app should use the current master copy of js-slang, automatically put in the node_modules folder/directory by npm
• To modify js-slang, proceed to install yarn - this must be used to process js-slang into a proper TypeScript module
• Install js-slang - preferably in another folder/directory
• Change your js-slang if needed
• Build js-slang using yarn build
• Copy over folder js-slang/dist to cadet-frontend/node_modules/js-slang/dist (replace the old folder entirely)
  • If you know your way around your system, symlinks and hardlinks may work for you.
• Start frontend as per normal, using npm start

To change the language implementation in your own production frontend, fork js-slang and use package.json in cadet-frontend to point to your fork.