title: npm issue after update
body: <p>After update npm i cannot use <code>npm install</code> when i run </p>
  
  <pre><code>npm install
  </code></pre>
  
  <p>i've got </p>
  
  <pre><code>npm ERR! code MODULE_NOT_FOUND
  npm ERR! Cannot find module './lib/extract-stream.js'
  </code></pre>
  
  <p>The location of <code>extract-stream.js</code> is <code>/usr/local/lib/node_modules/npm/node_modules/pacote/lib/extract-stream.js</code></p>
  
  <p>If i run </p>
  
  <pre><code>/usr/local/bin/npm install   # IT WORKS!
  </code></pre>
  
  <p><br><br></p>
  
  <p>when i run </p>
  
  <pre><code>which npm 
  # output: {my_home_path}/.npm-global/bin/npm   
  </code></pre>
  
  <p>and when i run </p>
  
  <pre><code>npm -v 
  # output: 6.7.0
  
  /usr/local/bin/npm -v
  # output 6.5.0
  </code></pre>
  
  <p>How can i fix this issue?</p>