Error when running Ionic serve in Ionic 2

Question

When I ran ionic serve in node.js command line or GitHub power shell, I encounter this error.

There is an error in your gulpfile:
Error: `libsass` bindings not found. Try reinstalling `node-sass`?
    at getBinding (D:\GitHub\stockMarketApp\node_modules\gulp-sass\node_modules\node-sass\lib\index.js:22:11)
    at Object.<anonymous> (D:\GitHub\stockMarketApp\node_modules\gulp-sass\node_modules\node-sass\lib\index.js:188:23)
    at Module._compile (module.js:413:34)
    at Object.Module._extensions..js (module.js:422:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Module.require (module.js:367:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (D:\GitHub\stockMarketApp\node_modules\gulp-sass\index.js:3:17)
    at Module._compile (module.js:413:34)
D:\GitHub\stockMarketApp [master ≡]>

Noted I could miss out node sass and gulp, and some windows user need visual studio, I follow this link How to compile or convert sass / scss to css with node-sass (no Ruby)? Using this command npm install --msvs_version=2013 gulp node-sass gulp-sass

Now, I encounter this error.

D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  ionic serve
Uh oh! Looks like you're missing a module in your gulpfile:
Cannot find module 'vinyl'

Do you need to run `npm install`?

all the version i sued are as below:

D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  npm -v
3.9.0
D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  node -v
v5.11.1
D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  gulp -v
[17:09:03] CLI version 3.9.1
[17:09:03] Local version 3.9.0
D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  node-sass -v
node-sass       3.7.0   (Wrapper)       [JavaScript]
libsass         3.3.6   (Sass Compiler) [C/C++]
D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  cordova -v
6.1.1
D:\GitHub\stockMarketApp [master ≡ +245 ~0 -5054 !]>  ionic -v
2.0.0-beta.25

Answer 1

Check that you have the latest gulp-sass version in package.json; It's a dependency of node-sass + required by Ionic, e.g.

"dependencies": {
    "gulp-sass": "^2.3.2"
  },

---

Uninstall gulp-sass

$ npm uninstall --save-dev gulp-sass

---

Reinstall gulp-sass

$ npm install --save-dev gulp-sass@2

---

There are a large number of issues pertaining to node-sass installation.
You may have to rebuild node-sass: $ npm rebuild node-sass

Answer 2

This solution worked for me:

Uninstall gulp-sass                
 $ npm uninstall --save-dev gulp-sass
Reinstall gulp-sass
 $ npm install --save-dev gulp-sass@2

 $ npm install bower
 $ionic serve --lab