title: Cannot find module but is already installed in current Project (xml-js, Windows)
body: <p>I'm actually working in a cross platform Project (Nodejs Package), all time I working under <strong>Linux</strong> platform, and sometimes I run the package on windows to test it. But for some reason in Windows I get "Cannot find module" error. That problem happen with 'xml-js' module, but the real strange situation happens when I init new clean package with 'xml-js' module installation. When I make a simple script that import the module, the error <strong>not appears</strong>. I really so confused and frustrated, because this only happens in Windows platform.</p>
  
  <p>In addition, I tried by globally installation of package and obviously also locally installation of 'xml-js' module. Is not a syntax error, because in <strong>Linux</strong> the package working perfectly.</p>
  
  <p>Previously I have working with "xml2js", and the same error been occurred. So I don't have any idea of the real problem.</p>
  
  <p>If anyone wants to see the error, it's here …</p>
  
  <pre><code>Error: Cannot find module 'xml-js'
      at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
      at Function.Module._load (internal/modules/cjs/loader.js:507:25)
      at Module.require (internal/modules/cjs/loader.js:637:17)
      at require (internal/modules/cjs/helpers.js:22:18)
      at Object.&lt;anonymous&gt; (C:\Users\eduar\my-package\lib\src\tools.js:2:15)
      at Module._compile (internal/modules/cjs/loader.js:689:30)
      at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
      at Module.load (internal/modules/cjs/loader.js:599:32)
      at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
      at Function.Module._load (internal/modules/cjs/loader.js:530:3)
  </code></pre>
  
  <p><strong>IMPORTANT EDIT:</strong>
  Ok, by testing package I found a interesting thing. When I import the module in the root of project, this is correctly imported. I test my own package by other "clean" package creation. In the last I install my project (package) for testing but returns an error when my project tries to import the 'xml-js' module. I don't know if this error disappears once the package be uploaded in npmjs.com, but I don't want to upload a incomplete project only to test this problem.</p>