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Use Shikiji to highlight Monaco Editor.

Monaco's built-in highlighter does not use the full TextMate grammar, which in some cases is not accurate enough. This package allows you to use Shikiji's syntax highlighting engine to highlight Monaco, with shared grammars and themes from Shikiji.

Heavily inspired by monaco-editor-textmate.


npm i -D shikiji-monaco
import { getHighlighter } from 'shikiji'
import { shikijiToMonaco } from 'shikiji-monaco'
import * as monaco from 'monaco-editor-core'

// Create the highlighter, it can be reused
const highlighter = await getHighlighter({
  themes: [
  langs: [

// Register the languageIds first. Only registered languages will be highlighted.
monaco.languages.register({ id: 'vue' })
monaco.languages.register({ id: 'typescript' })
monaco.languages.register({ id: 'javascript' })

// Register the themes from Shikiji, and provide syntax highlighting for Monaco.
shikijiToMonaco(highlighter, monaco)

// Create the editor
const editor = monaco.editor.create(document.getElementById('container'), {
  value: 'const a = 1',
  language: 'javascript',
  theme: 'vitesse-dark',

// ...As you use the editor normally

Released under the MIT License.