template.js.erb

<%# Local variables:
  node_modules: Path to the node_modules folder.
  theme: Theme name from reveal.js %>
import Reveal from '<%= node_modules %>/reveal.js';
import Markdown from '<%= node_modules %>/reveal.js/plugin/markdown/markdown.esm.js';
import RevealHighlight from '<%= node_modules %>/reveal.js/plugin/highlight/highlight.esm.js';
import RevealNotes from '<%= node_modules %>/reveal.js/plugin/notes/notes.esm.js';
import '<%= node_modules %>/reveal.js/dist/reveal.css';
import '<%= node_modules %>/highlight.js/styles/github.css';
import '<%= node_modules %>/reveal.js/dist/theme/<%= theme %>.css';

let deck = new Reveal({
  plugins: [ Markdown, RevealHighlight, RevealNotes ],
  hash: true,
  history: true,
  defaultTiming: 15
})

deck.initialize({
  markdown: {
    gfm: true
  }
});

deck.configure({showNotes: window.location.search.match(/print-pdf/gi)});