rake webpacker:check_node does handle extended Node.JS versions

[jbotelho2-bb]

It looks like the webpacker:check_node uses the Gem::Version parser to parse Node.JS versions:

webpacker/lib/tasks/webpacker/check_node.rake

Line 12 in 4f5e1ac

version = Gem::Version.new(node_version.strip.tr("v", ""))

Unfortunately, this is only able to parse a subset of possible Node.JS versions. We have started tagging our Node.JS builds with extended version numbers (e.g. 8.11.2+some-tag), which is valid according to the semver convention that Node.JS follows, but results in webpacker blowing up:

rake aborted!
       ArgumentError: Malformed version number string 8.11.3+0-b20180704T02124290
       /opt/lib64/ruby/2.4.0/rubygems/version.rb:208:in `initialize'
       /opt/lib64/ruby/2.4.0/rubygems/version.rb:199:in `new'
       /opt/lib64/ruby/2.4.0/rubygems/version.rb:199:in `new'
       /tmp/build/vendor/bundle/ruby/2.4.0/gems/webpacker-3.5.3/lib/tasks/webpacker/check_node.rake:12:in `block (2 levels) in <top (required)>'

[gauravtiwari]

Feel free to make a PR please :)