Hi, I'm stuck with an error and I don't know how to handle this case. The warn method from the Kernel module is not found by Opal:

Uncaught NoMethodError: undefined method `warn' for Asciidoctor::Lexer

I tried to add "require 'kernel'" to solve this issue and it nearly worked... but then Opal mixed up definition of methods. For example the =~ method now use the implementation of the Kernel module (opal/corelib/kernel.rb) instead of the implementation of the String class or Regexp class :

module Kernel
# ...
  def =~(obj)
    false
  end
end
# ...

Any idea ? Maybe it's some kind of "bug" or limitation in Opal ? To move on I commented out all usage of the warn method :/ Cheers, Guillaume

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