react-codemirror2 vs react-codemirror | Code Editor Components for React Comparison

Package	Downloads	Stars	Size	Issues	Publish	License

react-codemirror2	67,658	1,667	71.2 kB	90	9 months ago	MIT
react-codemirror	39,655	1,559	-	68	8 years ago	MIT

React Integration

react-codemirror2:
react-codemirror2 is designed with React in mind, offering a more idiomatic API that works well with functional components and hooks. This makes it a better choice for modern React applications that prioritize functional programming.
react-codemirror:
react-codemirror provides a simple wrapper around CodeMirror 5, allowing for easy integration into React applications. However, it may not fully leverage React's capabilities, especially in functional components.

Customization

react-codemirror2:
react-codemirror2 offers similar customization capabilities but with a more flexible API that makes it easier to implement both basic and advanced customizations. It also supports controlled components, allowing for better integration with React's state management.
react-codemirror:
react-codemirror allows for basic customization of the CodeMirror editor, including themes, key bindings, and modes. However, it may require more effort to implement advanced customizations.

Performance

react-codemirror2:
react-codemirror2 is optimized for performance, especially in functional components. It minimizes unnecessary re-renders and provides better handling of large files, making it a more efficient choice for performance-sensitive applications.
react-codemirror:
react-codemirror is performant for most use cases, but it may not be optimized for large files or complex editing scenarios, as it does not fully utilize React's rendering optimizations.

Documentation and Community

react-codemirror2:
react-codemirror2 has a growing community and is actively maintained, with a focus on improving the library based on user feedback. Its modern approach and React-centric design make it a popular choice among developers.
react-codemirror:
react-codemirror has good documentation and a supportive community, but it is not as actively maintained as some other projects, which may limit its long-term viability.

Ease of Use: Code Examples

react-codemirror2:

Basic usage of react-codemirror2

import React from 'react';
import { Controlled as CodeMirror } from 'react-codemirror2';
import 'codemirror/lib/codemirror.css';
import 'codemirror/theme/monokai.css';
import 'codemirror/mode/python/python';

const MyEditor = () => {
  const [code, setCode] = React.useState('print("Hello, World!")');

  return (
    <CodeMirror
      value={code}
      options={{
        mode: 'python',
        theme: 'monokai',
        lineNumbers: true,
      }}
      onBeforeChange={(editor, data, value) => {
        setCode(value);
      }}
    />
  );
};

export default MyEditor;

react-codemirror:

Basic usage of react-codemirror

import React from 'react';
import { Controlled as CodeMirror } from 'react-codemirror2';
import 'codemirror/lib/codemirror.css';
import 'codemirror/theme/material.css';
import 'codemirror/mode/javascript/javascript';

const MyEditor = () => {
  const [code, setCode] = React.useState('// Your code here...');

  return (
    <CodeMirror
      value={code}
      options={{
        mode: 'javascript',
        theme: 'material',
        lineNumbers: true,
      }}
      onBeforeChange={(editor, data, value) => {
        setCode(value);
      }}
    />
  );
};

export default MyEditor;