Error: Cannot find module 'connect'

Question

It appears that this simple app can\'t find the \'connect\' module after I just installed it in the file directory.

var connect = require (\'connec         


        

Answer 1

Express internally uses Connect as one of its node_modules dependencies.

If you wish to use Connect in your app, you'll need to add it to your package.json and run npm update.

By design, each node module has its own private internal dependencies.

If you want to use any, your app will need to install them too.

It means your app can use a different version of the modules, and each module can internally use different versions again without conflicts.

Answer 2

I had the same problem for express-http-proxy and the solution was to install the package with npm. At first I installed globally (-g) and it works. On another installation I had to use "--save-dev".

$ gulp
module.js:338
    throw err;
      ^
Error: Cannot find module 'express-http-proxy'
at Function.Module._resolveFilename (module.js:336:15)
at Function.Module._load (module.js:278:25)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/var/opt/jet/workspace/node-js-project/lib/authorization-to-context-header.js:1:75)
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)

installing the package

$ npm install express-http-proxy -g
express-http-proxy@0.6.0 /opt/jet/nodejs/node-js/lib/node_modules/express-http-proxy
âââ type-is@1.6.6 (media-typer@0.3.0, mime-types@2.1.4)
âââ raw-body@1.3.4 (bytes@1.0.0, iconv-lite@0.4.8)

or if the "-g" is not enough

$ npm install express-http-proxy --save-dev  

gulp works

$ gulp
[16:49:17] Using gulpfile /var/opt/workspace/node-js-project/gulpfile.js
[16:49:17] Starting 'dev'...
[16:49:17] Starting 'clean'...
[16:49:17] Finished 'dev' after 9.18 ms
[16:49:17] Starting 'default'...
[16:49:17] Finished 'default' after 10 μs
[16:49:17] Finished 'clean' after 11 ms
[16:49:17] Starting 'build'...
[16:49:17] Starting 'clean'...
[16:49:17] Finished 'clean' after 2.13 ms
[16:49:17] Starting 'styles'...
[16:49:17] Finished 'styles' after 813 ms
...