gulp command error : cannot find module 'through2'? - npm

Question

I installed the gulp to global and local project:
npm install -g gulp
and
npm install --save-dev gulp
then I use gulp command:
gulp -v
then,display error:
module.js:471
throw err;
^
Error: Cannot find module 'through2'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/home/users/zhangzhida/output/lib/node_modules/gulp/node_modules/gulp-util/lib/noop.js:1:77)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
Then ,I install the through2 to global and local project. still display error like
the above. when I re-install the gulp after installed the through2 ,is also like the above.
I think it is some problem in npm ,but I don't know how to resolve it .Please help me.

Answer 1

While I'm not sure if it will help, here's how to use gulp.
Update NodeJS and npm
If not done already, install the latest stable version of NodeJS and immediately run:
npm install -g npm
This will update npm with npm.
Installing gulp
The first thing you see on their website is the npm commands to install the gulp package to your local project, and the gulp CLI program globally as a tool.
npm install gulp-cli -g
npm install gulp -D
Since so much people confuses the gulp package with the gulp CLI package, the doc says:
If you've previously installed gulp globally, run npm rm --global gulp
before [installing the CLI again]
Using gulp with a project
Gulp is a development dependency in your project, like any other package needed to build your project. So you shouldn't install through2 globally, only locally in the project as a dev dependency.