title: How to import qs in react
body: <p>I searched about <strong>［How to use qs in react］</strong> but can't find the answer.</p>
  <p>Qs's official site <a href="https://www.npmjs.com/package/qs" rel="nofollow noreferrer">https://www.npmjs.com/package/qs</a>
  <strong>Usage</strong></p>
  <pre><code>qs = require('qs');
  var assert = require('assert');
  
  var obj = qs.parse('a=c');
  assert.deepEqual(obj, { a: 'c' });
  
  var str = qs.stringify(obj);
  assert.equal(str, 'a=c');
  </code></pre>
  <p>But I never see <code>require()</code> used in react.</p>
  <p>Does anybody know this answer?</p>
  <p>I need this for passing array parameter in axios.</p>