configuration.rb in ruby-lsp-0.14.0

- old
+ new

@@ -190,10 +190,13 @@
         dependency.groups == [:development]
       end
 
       # When working on a gem, we need to make sure that its gemspec dependencies can't be excluded. This is necessary
       # because Bundler doesn't assign groups to gemspec dependencies
+      #
+      # If the dependency is prerelease, `to_spec` may return `nil` due to a bug in older version of Bundler/RubyGems:
+      # https://github.com/Shopify/ruby-lsp/issues/1246
       this_gem = Bundler.definition.dependencies.find do |d|
         d.to_spec&.full_gem_path == Dir.pwd
       rescue Gem::MissingSpecError
         false
       end
@@ -201,20 +204,19 @@
       others.concat(this_gem.to_spec.dependencies) if this_gem
 
       excluded.each do |dependency|
         next unless dependency.runtime?
 
-        # If the dependency is prerelease, to_spec may return `nil`
         spec = dependency.to_spec
         next unless spec
 
         spec.dependencies.each do |transitive_dependency|
           # If the transitive dependency is included in other groups, skip it
           next if others.any? { |d| d.name == transitive_dependency.name }
 
           # If the transitive dependency is included as a transitive dependency of a gem outside of the development
           # group, skip it
-          next if others.any? { |d| d.to_spec.dependencies.include?(transitive_dependency) }
+          next if others.any? { |d| d.to_spec&.dependencies&.include?(transitive_dependency) }
 
           excluded << transitive_dependency
         end
       rescue Gem::MissingSpecError
         # If a gem is scoped only to some specific platform, then its dependencies may not be installed either, but they