Node-sass: Failed at the [email protected] postinstall script.

[SimonKomlos]

• NPM version (npm -v): 6.0.1
• Node version (node -v): v8.11.2
• Node Process (node -p process.versions):

{ http_parser: '2.8.0',
  node: '8.11.2',
  v8: '6.2.414.54',
  uv: '1.19.1',
  zlib: '1.2.11',
  ares: '1.10.1-DEV',
  modules: '57',
  nghttp2: '1.29.0',
  napi: '3',
  openssl: '1.0.2o',
  icu: '60.1',
  unicode: '10.0',
  cldr: '32.0',
  tz: '2017c' }

• Node Platform (node -p process.platform): undefined
• Node architecture (node -p process.arch): x64
• node-sass version (node -p "require('node-sass').info"): Error: Cannot find module 'node-sass'
• npm node-sass versions (npm ls node-sass): npm ERR! missing: [email protected], required by [email protected]

---

I'm having some problems. Let me try to take you down the steps I took to get me in this situation.
Yesterday, everything was working great! Then I did _something_.. I don't exactly know what I did, but I updated some file from 4.4.0 to 4.7.0.. I think it was either Ionic, Cordova, or NPM related.

After updating I got an error saying that Angular CLI is not compatible with my version of Node. For some reason I decided to follow this tutorial to fix: https://github.com/angular/angular-cli/issues/10527 saying:

1. Download and save a local copy of the correct version of node-sass binary - win32-x64-64_binding.node. For example download it to the following location:
   C:node-sasswin32-x64-64_binding.node
2. Provide reference to the full path of the node-sass binary file in the sass_binary_path npm configuration parameter (in the ~/.npmrc file):
   npm config set sass_binary_path
   For example,
   npm config set sass_binary_path C:node-sasswin32-x64-64_binding.node
3. Run the npm install command again to install @angular/cli correctly.
4. Execute ng serve or npm start and your should be past the problem.

So I changed the node-sass path. I was still having some issues and realized that to fix I literally just had to download the latest version of NodeJS, which I ended up doing.

I then did npm install on a project I was working on, which then gave me a lovely error:

Failed at the [email protected] postinstall script.

I tried doing npm rebuild node-sass --force which did nothing, unfortunately.

At this point it must've been hour 10 of trying to figure out what the heck was going on, so out a fit of frustration I decided to do a Windows 10 recovery for the previous day. But no, I still have problems.

Here is the error report after doing npm install:

Binary found at C:node-sasswin32-x64-64_binding.node
Testing binary
Binary has a problem: { Error: Cannot find module 'C:node-sasswin32-x64-64_binding.node'

// warnings

gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at PythonFinder.failNoPython (C:\xampp\htdocs\project x\projectx\node_modules\node-gyp\lib\configure.js:483:19)
gyp ERR! stack     at PythonFinder.<anonymous> (C:\xampp\htdocs\project x\projectx\node_modules\node-gyp\lib\configure.js:508:16)
gyp ERR! stack     at C:\xampp\htdocs\project x\projectx\node_modules\graceful-fs\polyfills.js:284:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:152:21)
gyp ERR! System Windows_NT 10.0.16299
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\xampp\\htdocs\\project x\\projectx\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd C:\xampp\htdocs\project x\projectx\node_modules\node-sass
gyp ERR! node -v v8.11.2
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/common@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of @angular/core@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of @angular/platform-browser@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of @angular/platform-browser-dynamic@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of firebase@^5.0.3 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of rxjs@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of firebase@^2.4.0 || 3.x.x but none is installed. You must install peer dependencies yourself.
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\Simon K\AppData\Roaming\npm-cache\_logs\2018-05-27T21_04_57_478Z-debug.log

What should I do? I've been struggling with this for _hours_! Any help, please?

[nschonni]

You can't use 4.7.2 with Node 10. Please delete your node_modules and re-install with a supported Node + node-sass combination.
Those instructions on that other thread are bad and will give you a broken workspace

[SimonKomlos]

@nschonni sorry do you mind giving a slightly more detailed answer? I'm on Node v8.11.2, do I downgrade further? and by re-install do you mean npm install?

[xzyfer]

npm update node-sass@latest

[SimonKomlos]

@xzyfer this does nothing I'm afraid. I also just tried completely uninstalling node from my machine and I'm still having this issue..

[xzyfer]

Sounds like you're having multiple different issues unrelated to node-sass.
Make sure the version of node-sass is compatible with your version of node,
then delete your nodd_modules and run npm.

npm ls node-sass will tell you the version you've installed. Check the
release notes for that version to which Node versions are supported.

Beyond that this is not a node-sass issue.

On Mon., 28 May 2018, 7:26 pm Simon, [e-mail] wrote:

@xzyfer https://github.com/xzyfer this does nothing I'm afraid. I also
just tried completely uninstalling node from my machine and I'm still
having this issue..

—
You are receiving this because you were mentioned.
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https://github.com/sass/node-sass/issues/2397#issuecomment-392574539,
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[mah14]

I have this problem too :(
please help me

[kieryk123]

Did anyone resolve this issue?

[xzyfer]

The solution is always to make to sure your version Node (node --version) is supported by your node-sass version (npm ls node-sass).

Check the support table at the bottom of the release notes i.e. https://github.com/sass/node-sass/releases/tag/v4.7.2.

Run npm update node-sass to install the latest node-sass.

[kieryk123]

I have a v8.11.2 node version, 4.9.0 node-sass version and 6.1.0 NPM version. I have this issue everywhere when I want to install gulp-sass... I don't install node-sass, but only gulp-sass.

[xzyfer]

What exactly is the issue you're seeing. By commenting on an old issues you've not given us the information required to begin helping.

[kieryk123]

gyp ERR! configure error 
gyp ERR! stack Error: EACCES: permission denied, mkdir '/Users/pawelkieryk/Desktop/TEST/node_modules/node-sass/build'
gyp ERR! System Darwin 17.5.0
gyp ERR! command "/usr/local/bin/node" "/Users/pawelkieryk/Desktop/TEST/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd /Users/pawelkieryk/Desktop/TEST/node_modules/node-sass
gyp ERR! node -v v8.11.2
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok 
Build failed with error code: 1
npm WARN [email protected] No description
npm WARN [email protected] No repository field.

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!     /Users/pawelkieryk/.npm/_logs/2018-06-05T14_22_36_001Z-debug.log

[kieryk123]

I have error as above

[xzyfer]

Your issue is very different.

gyp ERR! stack Error: EACCES: permission denied, mkdir '/Users/pawelkieryk/Desktop/TEST/node_modules/node-sass/build'

You have a permission issue. For some reason you cannot write to the directory.

Check the permissions for that folder. What command you running?

[kieryk123]

I am working on MacBook (I am very new in macOS). I running: sudo npm install gulp-sass

[xzyfer]

You should avoid using sudo with npm, it will break things in weird a wonderful ways. Removing sudo should fix your issue.

[kieryk123]

I fixed it with this command that I found in another thread on github: sudo npm install -g electron --unsafe-perm=true --allow-root

[hiepxanh]

dont use sudo

[AnnieManu]

I have the same problem, can't download exactly node sass, wrote this command
npm install node-sass --save-dev
I tried many solutions, nothing helps, always gives errors,
npm ERR! Failed at the [email protected] postinstall script. and some others

[mah14]

@AnnieManu
if your project is new, create that again and don't use ''sudo'' for project installation