<p dir="auto">#### Summary</p>
<p dir="auto">When trying to fetch to server with proxy, it just ignores proxy setting and fetch to server.<br>
This problem already mentioned in this issue (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="203976734" data-permission-text="Title is private" data-url="https://github.com/axios/axios/issues/672" data-hovercard-type="issue" data-hovercard-url="/axios/axios/issues/672/hovercard" href="https://github.com/axios/axios/issues/672">#672</a>)<br>
But closed for some reason. and still occurred now.<br>
I am using latest versions of react-native, and axios.<br>
Here is my code below.</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="let config = {
      proxy: {
        host: '127.0.0.1',
        port: 8118
      }
    }
    axios.get('https://api.ipify.org/', config)
    .then(function (response) {
      console.log(&quot;-----------&quot;);
      console.log(response.data);
      console.log(&quot;-----------&quot;);
    })"><pre class="notranslate"><code class="notranslate">let config = {
      proxy: {
        host: '127.0.0.1',
        port: 8118
      }
    }
    axios.get('https://api.ipify.org/', config)
    .then(function (response) {
      console.log("-----------");
      console.log(response.data);
      console.log("-----------");
    })
</code></pre></div>
<p dir="auto">Output: <em><code class="notranslate">Original IP, not proxied one</code></em></p>
<p dir="auto">#### Context</p>
<ul dir="auto">
<li>axios version: v0.16.2</li>
<li>Environment: node v.8.3.0, and react-native-cli 2.0.1</li>
</ul>
<p dir="auto"><strong>Describe the issue</strong><br>
version 0.19.0 , because mergeConfig :  is not support custom parameters realization RESETful</p>
<p dir="auto"><strong>Example Code</strong><br>
Code snippet to illustrate your question</p>
<div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="axios.delete(diagnosis, {
        params: {
          text: 'hello'
        },
        pathParams: {
          userId: 1000,
          batchId: 'XD982393'
        }
      })"><pre class="notranslate"><span class="pl-s1">axios</span><span class="pl-kos">.</span><span class="pl-en">delete</span><span class="pl-kos">(</span><span class="pl-s1">diagnosis</span><span class="pl-kos">,</span> <span class="pl-kos">{</span>
        <span class="pl-c1">params</span>: <span class="pl-kos">{</span>
          <span class="pl-c1">text</span>: <span class="pl-s">'hello'</span>
        <span class="pl-kos">}</span><span class="pl-kos">,</span>
        <span class="pl-c1">pathParams</span>: <span class="pl-kos">{</span>
          <span class="pl-c1">userId</span>: <span class="pl-c1">1000</span><span class="pl-kos">,</span>
          <span class="pl-c1">batchId</span>: <span class="pl-s">'XD982393'</span>
        <span class="pl-kos">}</span>
      <span class="pl-kos">}</span><span class="pl-kos">)</span></pre></div>
<p dir="auto"><strong>Expected behavior, if applicable</strong><br>
Workable</p>
<p dir="auto"><strong>Environment:</strong></p>
<ul dir="auto">
<li>All</li>
</ul>
<p dir="auto"><strong>Additional context/Screenshots</strong><br>
none</p>