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POnode.js, Error: Cannot find module 'express'
 

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    <p>I am new to node.js, try to learn express to build my first web application. got stuck on my very first sample code. need some help to get it running. Before I post this question, I did search on stack overflow, found some similar questions but still could not fix it.</p> <blockquote> <p>Error: Cannot find module 'express'</p> </blockquote> <p>I am using mac os 10.8.2. I have node.js installed using nvm. </p> <blockquote> <p>node.js: 0.8.20 path to node: /Users/feelexit/nvm/v0.8.20/bin/node path to express: /Users/feelexit/nvm/node_modules/express</p> </blockquote> <p>here's my sample code: this file locates at:</p> <p><strong>/Users/feelexit/WebstormProjects/learnnode/node_modules/index.js</strong></p> <pre><code>var express = require('express'); var app = express(); app.get('/', function(req, res){ res.send('welcome to express'); }); app.listen(3000); </code></pre> <p>when I try to run this file "node index.js"</p> <p>I get following error message, please help me to fix it. thank you .</p> <pre><code>Error: Cannot find module 'express' at Function.Module._resolveFilename (module.js:338:15) at Function.Module._load (module.js:280:25) at Module.require (module.js:362:17) at require (module.js:378:17) at Object.&lt;anonymous&gt; (/Users/feelexit/WebstormProjects/learnnode/node_modules/index.js:1:81) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Module.runMain (module.js:492:10) feelexits-Mac:node_modules feelexit$ </code></pre> <p><strong>Update to answer chovy's question:</strong></p> <pre><code>feelexits-Mac:~ feelexit$ npm install npm ERR! install Couldn't read dependencies npm ERR! Error: ENOENT, open '/Users/feelexit/package.json' npm ERR! If you need help, you may report this log at: npm ERR! &lt;http://github.com/isaacs/npm/issues&gt; npm ERR! or email it to: npm ERR! &lt;npm-@googlegroups.com&gt; npm ERR! System Darwin 12.2.0 npm ERR! command "/Users/feelexit/nvm/v0.8.20/bin/node" "/Users/feelexit/nvm/v0.8.20/bin/npm" "install" npm ERR! cwd /Users/feelexit npm ERR! node -v v0.8.20 npm ERR! npm -v 1.2.11 npm ERR! path /Users/feelexit/package.json npm ERR! code ENOENT npm ERR! errno 34 npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /Users/feelexit/npm-debug.log npm ERR! not ok code 0 </code></pre>
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    1. COMay be this will help http://stackoverflow.com/questions/9133784/node-version-manager-nvm-npm-installing-modules-to-common-folder
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    2. CODid you type `npm install`
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    3. COAre you certain that the express library is in your "node_modules" folder? You may also want to try moving your _index.js_ file up one directory to "/Users/feelexit/WebstormProjects/learnnode/" and leave the node_modules folder alone.
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