command npm install swiper failed - code 255

Question

When I try to run npm install swiper throws an error. I tried to install swiper locally and globally with:

npm install swiper
npm install -g swiper

I successfully installed it globally. But when I try to install it again the error is the same.

Here is the error:

npm ERR! code 255
npm ERR! path C:\Users\Emir\Desktop\Project\portal\node_modules\swiper
npm ERR! command failed
npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c 
C:\Users\Emir\AppData\Local\Temp\postinstall-cab5f01a.cmd
npm ERR! "Love Swiper? Support Vladimir's work by donating or pledging on patreon:"
npm ERR! The syntax of the command is incorrect.

Answer 1

Hey you are probably a windows user like me.

I had this error fixed it by setting an environment variable

There is a problem with the swiper postinstall file

https://github.com/nolimits4web/swiper/blob/master/src/copy/postinstall.js

you need to bypass this

function isBannerRequired() {
  return !(ADBLOCK || CI || DISABLE_OPENCOLLECTIVE || SILENT || OPEN_SOURCE_CONTRIBUTOR);
}

so inside vs code open a terminal and write to bypass the equality test

 $env:OPEN_SOURCE_CONTRIBUTOR="true"

then try npm install