Kalman js library

[Arman Assylkhan]

Hello everyone!

I am trying to install kalmanjs library from here https://github.com/wouterbulten/kalmanjs on my Raspberry Pi 3 but getting some errors:

pi@raspberrypi:~ $ npm install kalmanjs

 

/home/pi

└─┬ node-red-contrib-kalman@0.0.3

  └── kalmanjs@1.0.0-beta  


 

npm WARN optional Skipping failed optional dependency /bleacon/bleno/xpc-connection:

npm WARN notsup Not compatible with your operating system or architecture: xpc-connection@0.1.4

npm WARN optional Skipping failed optional dependency /noble/xpc-connection:

npm WARN notsup Not compatible with your operating system or architecture: xpc-connection@0.1.4

npm WARN optional Skipping failed optional dependency /noble-device/noble/xpc-connection:

npm WARN notsup Not compatible with your operating system or architecture: xpc-connection@0.1.4

npm WARN optional Skipping failed optional dependency /bleno/xpc-connection:

npm WARN notsup Not compatible with your operating system or architecture: xpc-connection@0.1.4

npm WARN enoent ENOENT: no such file or directory, open '/home/pi/package.json'

npm WARN pi No description

npm WARN pi No repository field.

npm WARN pi No README data

npm WARN pi No license field.

was wondering if someone knows what can be the issue 

thanks in advance

[Dave C-J]

You are probably using npm version 3. This throws warnings if you aren't installing it into a project. They are only warnings, not errors, so it looked like it installed OK.