npm install: Failed at the [email protected] postinstall script

Question

I have a angular application: https://github.com/XBITSwitzerland/ngx-admin/tree/ng2-admin

And now I try to do: npm install

But I get this error (The compete Output of the command was way too long, so I just share here the last part):

gyp ERR! build error
gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onExit (C:\github\ngx-admin\node_modules\node-gyp\lib\build.js:258:23)
gyp ERR! stack     at ChildProcess.emit (events.js:182:13)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:240:12)
gyp ERR! System Windows_NT 10.0.17134
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\github\\ngx-admin\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd C:\github\ngx-admin\node_modules\wintersmith-sassy\node_modules\node-sass
gyp ERR! node -v v10.15.0
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
Build failed with error code: 1
npm WARN [email protected] requires a peer of @angular/core@^2.2.0 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of @angular/common@^2.2.0 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\webpack-dev-server\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\watchpack\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] postinstall: `node scripts/build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\danyb\AppData\Roaming\npm-cache\_logs\2019-01-29T18_25_12_699Z-debug.log

Does someone have an Idea why this error occurs and how to solve it?

Answer 1

If you run into this issue, read this page: https://www.bramvandenbulcke.be/en/kb/failed-node-sass3131-postinstall-script

The solution in my case:

1) Delete the package-lock.json file

2) npm install gulp-sass --save-dev

3) npm install node-sass@latest

Version specific notes:

[email protected] runs only on versions of Node.js up to v7 as stated in the release notes:

Answer 2

I think this is happening because you're missing the node-sass module. Try the following and rerun your build script and see if this resolves your issue:

npm install node-sass@latest

Also, I see you're using fsevents on a Windows platform, just a warning this module is only supported for Native access to OS X FSEvents

Answer 3

I had error [email protected] postinstall: node scripts/build.js on npm install after this message

> node scripts/install.js

Downloading binary from https://github.com/sass/node-sass/releases/download/v3.13.1/linux-x64-72_binding.node
Cannot download "https://github.com/sass/node-sass/releases/download/v3.13.1/linux-x64-72_binding.node": 

HTTP error 404 Not Found

Hint: If github.com is not accessible in your location
      try setting a proxy via HTTP_PROXY, e.g. 

      export HTTP_PROXY=http://example.com:1234

or configure npm proxy via

      npm config set proxy http://example.com:8080

> [email protected] postinstall /var/www/my/armat/www/node_modules/core-js
> node scripts/postinstall || echo "ignore"

and spent hours to find solution. I was trying to install it on laravel 5.2 that uses older versions of node and npm this helped me

$ npm install -g n
$ n 6.10.2    // selecting version you need in my case 6.10.2
$ npm install -g [email protected] // same for npm

hope this will help somebody else ^_^

#######UPDATE###########

nvm install 6.10.2
nvm use 6.10.2
npm install -g [email protected]