TypeError: Cannot read property 'prototype' of undefined

[alarrosa14]

I can't load grunt-connect-proxy. After installing it I get the following error after executing grunt serve:

Loading "connect_proxy.js" tasks...ERROR
>> TypeError: Cannot read property 'prototype' of undefined

Grunt version: 0.4.5

[thedug]

Same here. My build is blowing up.

Looks like the new version of eventemitter3 (1.0.1) is causing the error

Looking back through our build server this version passed..

grunt-connect-proxy@0.1.11 node_modules/grunt-connect-proxy └── http-proxy@1.1.6 (eventemitter3@0.1.6)

This one failed

grunt-connect-proxy@0.1.11 node_modules/grunt-connect-proxy └── http-proxy@1.1.6 (eventemitter3@1.0.1)

[thedug]

We are going to use npm shrinkwrap to force the older version of eventemitter3

[phobetron]

Here's the (closed) bug ticket for eventemitter3 https://github.com/primus/eventemitter3/issues/29

Looks like there are breaking changes that everyone is expected to patch against. Looks like grunt-connect-proxy may also be using anolder version of http_proxy?

[lostthetrail]

I am also seeing this issue.

[sjerman]

shrinkwrapping does fix the issue...

[jaan]

same here:

$ grunt server --verbose

Loading "Gruntfile.js" tasks...ERROR
>> TypeError: Cannot read property 'prototype' of undefined
>>     at Object.exports.inherits (util.js:634:43)
>>     at Object.<anonymous> (/ProjectPath/node_modules/grunt-connect-proxy/node_modules/http-proxy/lib/http-proxy/index.js:106:17)
>>     at Module._compile (module.js:460:26)
>>     at Object.Module._extensions..js (module.js:478:10)
>>     at Module.load (module.js:355:32)
>>     at Function.Module._load (module.js:310:12)
>>     at Module.require (module.js:365:17)
>>     at require (module.js:384:17)
>>     at Object.<anonymous> (/ProjectPath/node_modules/grunt-connect-proxy/node_modules/http-proxy/lib/http-proxy.js:4:17)
>>     at Module._compile (module.js:460:26)

[phobetron]

As a simple workaround, I pinned the eventemitter3 version in my package.json file.

...
"eventemitter3": "^0.1.6",
...

[emiller]

We also hit this issue. http-proxy released a new version ~9 hours ago which may be the likely cause. If @phobetron's simple fix works, then there is a good chance that the problematic commit in the new version is:

https://github.com/nodejitsu/node-http-proxy/commit/18c77cafc7d5479502cf5c4d2b663d8f85cfd6d4#diff-8bcb067b974b0e74fe86cdb07748315e

Edit: noticed eventemitter3 also had a release 11 hours ago (2 hours before http-proxy) in which this went out:

https://github.com/primus/eventemitter3/commit/43211e9a9050887530421e8e2d8b9e1aa2506cc4#diff-168726dbe96b3ce427e7fedce31bb0bc

Looks like just bad timing?

[thedug]

@phobetron How can you peg it in your package.json to fix this? This is a transitive dependency so it will install both versions right?

[thedug]

shrinkwrap fails for me on my build server. arg!

linux-x64-node-0.10 exists; testing Binary is fine; exiting npm ERR! cb() never called! npm ERR! not ok code 0

[phobetron]

All I know is, it worked for me. I placed that line among my dev dependencies.

[thedug]

Strange that did work. How does a project dependency impact a dependency from another module since these are downloaded into sub dirs.

[esseti]

have a look at this https://github.com/drewzboto/grunt-connect-proxy/issues/95

[ruiaraujo]

This issue has been solved in #96.