AppLocalize.js

import React from 'react';
import { LocalizeContext } from './LocalizeContext';

class App extends React.Component {
  constructor(props) {
    super(props);
    
    this.state = {
      activeLanguage: 'en',
      languages: ['en', 'fr', 'es']
    }
  }
  
  return (
    <LocalizeContext.Provider value={this.state}>
      {this.props.children}
    </LocalizeContext.Provider>
  )
};