Ubuntu Rails 6 Webpacker Install Error Troubleshooting

Solving Rails 6 Webpacker Install Error in Ubuntu GNU/Linux

Hi! This Tip Try to Solve Rails 6 Webpacker Installation Error in Ubuntu GNU/Linux Desktops.

This Issue is due from the Conflict between Webpacker and Psyck Ruby Gems.

Webpacker, use Webpack to manage app-like JavaScript modules in Rails.

Psych is a YAML Parser and Emitter. Psych leverages libyaml[https://pyyaml.org/wiki/LibYAML] for its YAML parsing and emitting capabilities. In addition to wrapping libyaml, Psych also knows how to serialize and de-serialize most Ruby objects to and from the YAML format.

Finally, this Setup is valid for all the Ubuntu-based Distros like:

• Linux Mint
• Zorin OS
• Lubuntu
• Elementary OS
• Kde Neon
• Pop_OS!
• Xubuntu
• Linux Lite
• Bodhi
• Puppy
• Kubuntu
• LXLE
• Trisquel
• Voyager Ubuntu
• feren OS
• Peppermint
• Linux Ultimate Edition
(You may just need to Discover what’s the Parent Release)

1. 1. Installing NodeJs

   How to Install NodeJs in GNU/Linux

   NodeJs 16 Linux Setup Guide

   GNU/Linux NodeJs Installation Tutorial
   Follow instructions to Setup Node.js 16 LTS!

2. 2. Fixing App

   Then to Solve Rails 6 Webpacker Install Error in Ubuntu
   Access Rails App Target:

   cd [/path/2/railsApp]

   Edit the Gemfile
   In case, with the nano Editor like:

   nano ./Gemfile

   Then to manage the psych Version Append:

   gem 'psych', '< 4'

   And again Upgrade the webpacker Gem minimum Release:

   gem 'webpacker', '~>5.0'

   Next Update your Gems Bundle with:

   bundle update

   Now to Setup Webpacker run:

   rails webpacker:install

   Just confirm to Overwrite all proposed Files.
   Last, Install the missing Babel Plugins:

   yarn add @babel/plugin-proposal-private-methods

   yarn add @babel/plugin-proposal-private-property-in-object