insomnia/app/components/RequestBodyEditor.js

import React, {Component, PropTypes} from 'react';
import Editor from './base/Editor'

class RequestBodyEditor extends Component {
  render () {
    const {body, contentType, onChange, className} = this.props;

    return (
      <Editor
        value={body}
        className={className}
        debounceMillis={400}
        onChange={onChange}
        mode={contentType}
        placeholder="request body here..."
      />
    )
  }
}

RequestBodyEditor.propTypes = {
  // Functions
  onChange: PropTypes.func.isRequired,

  // Other
  body: PropTypes.string.isRequired,
  contentType: PropTypes.string.isRequired
};

export default RequestBodyEditor;