text: import React from 'react';
  
  function punctuate(value) {
    return function(target) {
      const originalMethod = target.descriptor.value;
      target.descriptor.value = function(message) {
        return originalMethod.call(this, `${message}${value}`);
      };
    };
  }
  
  export default class Test extends React.Component {
    @punctuate('!')
    renderMessage(message) {
      return <div id="decorators">{message}</div>;
    }
  
    render() {
      return this.renderMessage('decorators are working');
    }
  }
  