title: using brackets with javascript import syntax
body: <p>I came across a javascript library that uses the following syntax to import libraries:</p>
  
  <pre><code>import React, { Component, PropTypes } from 'react';
  </code></pre>
  
  <p>What is the difference between the above method and the following?</p>
  
  <pre><code>import React, Component, PropTypes from 'react';
  </code></pre>