title: Error: Cannot find module 'p-map' when running npm start on create-react-app project
body: <p>Encounters this error when running npm start on newly created create-react-app project:</p>
  
  <pre><code>Error: Cannot find module 'p-map'
      at Function.Module._resolveFilename (module.js:547:15)
      at Function.Module._load (module.js:474:25)
      at Module.require (module.js:596:17)
      at require (internal/module.js:11:18)
      at Object.&lt;anonymous&gt; (C:\Users\jeff ramos\Documents\web-dev\react-framework-intro-2\node_modules\webpack-dev-server\node_modules\del\index.js:8:14)
      at Module._compile (module.js:652:30)
      at Object.Module._extensions..js (module.js:663:10)
      at Module.load (module.js:565:32)
      at tryModuleLoad (module.js:505:12)
      at Function.Module._load (module.js:497:3)
  npm ERR! code ELIFECYCLE
  npm ERR! errno 1
  npm ERR! react-framework-intro-2@0.1.0 start: `react-scripts start`
  npm ERR! Exit status 1
  npm ERR!
  npm ERR! Failed at the react-framework-intro-2@0.1.0 start script.
  npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  </code></pre>