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

Question

I am new to Node.js, try to learn express to build my first web application. I got stuck on my very first sample code and need some help to get it running. Before I post th

Answer 1

Digging up an old thread here BUT I had this same error and I resolved by navigating to the directory my NodeApp resides in and running npm install -d

Answer 2

D:\learn\Node.js\node app.js
module.js:549
    throw err;
    ^

Error: Cannot find module 'body-parser'
    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)

Sometimes version not match with package.json Fixed the problem by checking the package.json then use the following commands: npm install body-parser@1.13.2 it resolved for me.

Answer 3

After you do express in your terminal, then do

 npm install

To install all the dependencies.

Then you can do node app to run the server.

Answer 4

npm install from within your app directory will fix the issue as it will install everything required

Answer 5

You have your express module located in a different directory than your project. That is probably the problem since you are trying to require() it locally. Try moving your express module from /Users/feelexit/nvm/node_modules/express to /Users/feelexit/WebstormProjects/learnnode/node_modules/express. This info can give you more detail about node_module file structures.

Answer 6

for this scenario run npm install express command using your cmd prompt for the respective folder where you want to run the program. Example I want to run the express module program server.js in F:\nodeSample. So run "npm install express" in that particular folder then run server.js