npm install failed at the [email protected] postinstall script

Question

the commands 'npm install' gives me the following error:

> [email protected] postinstall C:\Users\Nikhil\Music\tab-tracker\server\node_modules\nodemon
> node bin/postinstall || exit 0

npm WARN [email protected] No description
npm WARN [email protected] No repository field.
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! file bashcls
npm ERR! path bashcls
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn bashcls
npm ERR! [email protected] postinstall: `node bin/postinstall || exit 0`
npm ERR! spawn bashcls ENOENT
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\Nikhil\AppData\Roaming\npm-cache\_logs\2018-12-16T19_09_40_364Z-debug.log

As can be seen from the error messages, npm install fails at [email protected] postinstall script. I've tried things like, deleting the node_modules folder and re-running the 'npm install' command again, the same error appears. Also, i tried cleaning the npm cache as suggested by this answer, and it didn't work. Trying to separtely install nodemon gives the same error as above.

After reinstalling the OS, i installed nodejs and it started working. — lenikhilsingh, Apr 09 '19 at 01:48
Nice! I tried from a different console (PowerShell Window) and it worked :/ Go figure. — joe_coolish, Apr 09 '19 at 13:25
Man, you could have saved me a hell lot of time! Thanks though, hopefully this will make others' life easier :) — lenikhilsingh, Apr 11 '19 at 14:41

score 0 · Answer 1 · answered Nov 29 '19 at 13:37

I have the same problem while I installing

nodemon

in devDependencies for my existing projects in different computer. I do a research and found a solution that helped me to solved this kind for problem. It's happening because of security issues depending on your OS.

Solve this by :

npm install -g nodemon --unsafe-perm=true --allow-root

PS : This too can happen in Electron also, so u can solve by -

npm install -g electron --unsafe-perm=true --allow-root

npm install failed at the [email protected] postinstall script

1 Answers1