Cannot start sample application

[paypalsathya]

I followed the steps mentioned in the ReadMe file and Krakenjs.com to setup and run the HelloWorld app.

But, for some reason, when I try npm start, I am getting the following error:

LM-SJC-00712384:SampleNodeApp schandrashekar$ npm start

samplenodeapp@0.0.1 start /Users/schandrashekar/Documents/Workspace_nodeapp/SampleNodeApp
node index.js

[TypeError: Cannot read property 'prototype' of undefined]

I havent changed anything within the project. Just followed the instructions mentioned.

[lensam69]

Make sure you're running node version >= 0.10.

[paypalsathya]

Yup, that did the Trick. Thanks Lenny!

[lensam69]

I'll be adding this to the FAQ.
But I'm curious, since we have a node engine dependency on the package.json file, this shouldn't happen --in theory--.

Can you share some details on your environment? OS, node, (do you have multiple versions of Node installed)

[paypalsathya]

I am working on Mac OS X : 10.7.5.
The node version that I previously had was : v0.8.16 but, after the update : v0.10.22.
I believe I only had one version of node installed.

[lensam69]

After reading the npm documentation, I learned that specifying the engine is only "Advisory".
To enforce it, we were missing "engineStrict" : true in our package.json file.

This should prevent the installation if the minimum node version is not met.

Ref: https://npmjs.org/doc/json.html#engineStrict

[paypalsathya]

Oh ok. Yeah, this would be helpful.