CodeMirror 6 Rel language package

This is the official Rel language support package for the CodeMirror editor.

It is based on CM6 language support example and contains:

• The Rel grammar in Lezer format
• The CM6 language pack integration index.ts which exports the required function and LanguageSupport
• Tests are in /test/cases.txt and are wired/ran via mocha
• CM6 consumes the dist/index.js file which contains a "compilation" of the parser and the required LanguageSupport

To build/compile the new dist entries run:

npm run prepare

To test:

npm run test

Development

For local development and testing you can:

• Install fswatch, then run the following script to auto "prepare", watch and copy to the console code editor folder the rel.ts file:

fswatch -or src | xargs -I{} sh -c "npm run prepare && cp dist/index.js <ENTER PATH HERE>/rel.ts"

e.g.

fswatch -or src | xargs -I{} sh -c "npm run prepare && cp dist/index.js ../../Dev/rai-ux/packages/code-editor/src/rel.ts"

• Once the fswatch has generated the output file (rel.ts) import it into consore/code editor via changing the CodeEditor.tsx file rel import. E.g:

import { rel } from './rel'; //'@relationalai/codemirror-lang-rel';

• If all done correctly on any change to the parser files the code editor would refresh and reflect the changes

Note: Make sure you bump the package.json version on every release ready for consumption by CM6.