Monaco-editor-component NPM

Web component based on Monaco Editor. Support Vue and React.

Installation

[npm|yarn|pnpm] install monaco-editor-component

OR

bun install monaco-editor-component

Usage

React

You can see the demo details.

// App.tsx
import { useState } from 'react'
import { MonacoEditor, MonacoDiffEditor } from 'monaco-editor-component/react'

const App = () => {
  const [code, setCode] = useState('console.log("Hello World")')

  return (
    <div>
      <MonacoEditor language='javascript' value={code} width='300' height='500' onChange={value => setCode(value)} />
      <MonacoDiffEditor language='javascript' originalValue='const a = 123;' value={code} onChange={value => setCode(value)} />
    </div>
  )
}

// main.tsx
import App from './App'
import { createRoot } from 'react-dom/client'
const app = document.getElementById('root')
createRoot(app).render(<App />)

Vue(3+)

You can see the demo details.

// App.vue
<script setup lang="ts">
import { ref } from 'vue'
import { MonacoEditor, MonacoDiffEditor } from 'monaco-editor-component/vue'

const input = ref('const a = 12356;')

</script>

<template>
  <div>
    <MonacoEditor v-model:value="input" language='javascript' width='300' height='500'  />
    <MonacoDiffEditor language='javascript' originalValue='const a = 123;' v-model:value='input' />
  </div>
</template>

// main.ts
import App from './App.vue'
const app = document.getElementById('root')
createApp(app).render(<App />)

Props

MonacoEditor

Name	Type	Default	Description
language	string	javascript	The language of the editor.
value	string	null	The value of the auto created model in the editor.
defaultValue	string	""	The default value of the auto created model in the editor.
theme	string	vs-dark	The theme of the editor.
options	MonacoEditorOptions	{}	The options of the editor.
onChange	(value: string, e: monaco.editor.IModelContentChangedEvent) => void	noop	An event emitted when the content of the current model has changed.
width	string \| number	100%	The width of the editor.
height	string \| number	100%	The height of the editor.
className	string	""	The class name of the editor.
style	React.CSSProperties	{}	The style of the editor.
onEditorDidMount	(editor: MonacoCodeEditor, monaco: Monaco) => void	noop	An event emitted when the editor has been mounted (similar to componentDidMount of React).
onEditorWillMount	(monaco: Monaco) => void	noop	An event emitted before the editor mounted (similar to componentWillMount of React).
onEditorWillUnmount	(editor: MonacoCodeEditor, monaco: Monaco) => void	noop	An event emitted when the editor will unmount (similar to componentWillUnmount of React).
modelUri	(monaco: Monaco) => monaco.Uri	undefined	The uri of the model.

For more options see monaco-editor

MonacoDiffEditor

MonacoDiffEditor is a diff editor.

MonacoDiffEditor extends MonacoEditor, so it has all the props of MonacoEditor but excludes the modelUri prop.

Name	Type	Default	Description
originalValue	string	""	The original value of the auto created model in the editor, is a base value.
originalUri	(monaco: Monaco) => monaco.Uri	undefined	The uri of the original model.
modifiedUri	(monaco: Monaco) => monaco.Uri	undefined	The uri of the modified model.
value	string	null	The modified value of the auto created model in the editor, is a modified value.

Use Editor Instance

// react
import { useRef } from 'react'
import type { MonacoEditorRef } from 'monaco-editor-component'
const editorRef = useRef<MonacoEditorRef>(null)

// vue
import { ref } from 'vue'
const monacoEditor = ref<MonacoCodeEditor | null>(null)
const updateMonacoEditor = (editor: MonacoCodeEditor, monaco: Monaco) => {
  monacoEditor.value = editor
}
<template>
  <MonacoEditor v-model:value="input" :onEditorDidMount="updateMonacoEditor" />
</template>

// usage
const model = editorRef.current.editor.current.getModel()

OR

const model = monacoEditor.value.getModel()

Integrating the ESM version of the Monaco Editor

For Vite, you only need to implement the getWorker function (NOT the getWorkerUrl) to use Vite's output.

Others like Webpack see monaco-editor worker

// Vite
// worker.ts file
import * as monaco from 'monaco-editor'
import editorWorker from 'monaco-editor/esm/vs/editor/editor.worker?worker'
import cssWorker from 'monaco-editor/esm/vs/language/css/css.worker?worker'
import htmlWorker from 'monaco-editor/esm/vs/language/html/html.worker?worker'
import jsonWorker from 'monaco-editor/esm/vs/language/json/json.worker?worker'
import tsWorker from 'monaco-editor/esm/vs/language/typescript/ts.worker?worker'

// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
self.MonacoEnvironment = {
  getWorker(_: unknown, label: string) {
    if (label === 'json') {
      return new jsonWorker()
    }
    if (label === 'css' || label === 'scss' || label === 'less') {
      return new cssWorker()
    }
    if (label === 'html' || label === 'handlebars' || label === 'razor') {
      return new htmlWorker()
    }
    if (label === 'typescript' || label === 'javascript') {
      return new tsWorker()
    }
    return new editorWorker()
  },
}

// App.tsx
import { MonacoEditor } from 'monaco-editor-component/react'
import './worker'

// usage of MonacoEditor...

Vue usage is similar to React (when you use Vite).