// Load asciidoctor.js and asciidoctor-highlight.js.
const asciidoctor = require('@asciidoctor/core')()
const highlightJsExt = require('asciidoctor-highlight.js')

// Register the extension into global registry.
highlightJsExt.register(asciidoctor.Extensions)

// Convert the content to HTML.
const content = `
[source, js]
console.log('Hello, world!')
`
const html = asciidoctor.convert(content, {
  attributes: { 'source-highlighter': 'highlightjs-ext' },
})
console.log(html)

// Load asciidoctor.js and asciidoctor-highlight.js.
const asciidoctor = require('@asciidoctor/core')()
const highlightJsExt = require('asciidoctor-highlight.js')

// Register the extension into custom registry.
const registry = asciidoctor.Extensions.create()
highlightJsExt.register(registry)

// Convert the content to HTML.
const content = `
[source, js]
console.log('Hello, world!')
`
const html = asciidoctor.convert(content, {
  'extension_registry': registry,
  attributes: { 'source-highlighter': 'highlightjs-ext' },
})
console.log(html)