[2.4.2] Mistaken variable format crashes puppet-lint

[ashemedai]

Did some quick searching but could not easily spot a similar issue reported, apologies if I missed the obvious.

puppet-lint version: 2.4.2
ruby version: 2.6.3-p62
platform: universal.x86_64-darwin20

While trying to fix a single variable in string warning, I managed to crash puppet-lint because my tired mind had "fixed" the case by writing the following (notice the left in curly braces):

file { ${configuration_directory}:
    ensure  => directory,
    owner   => 'owner',
    group   => 'group',
    mode    => '0700',
    purge   => true,
    recurse => true,
}

Stack trace thrown:
error:

NoMethodError: undefined method `type' for nil:NilClass
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-trailing_newline-check-1.1.0/lib/puppet-lint/plugins/check_trailing_newline.rb:5:in `check'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/checkplugin.rb:21:in `run'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/checks.rb:61:in `block in run'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/checks.rb:58:in `each'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/checks.rb:58:in `run'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint.rb:205:in `run'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/tasks/puppet-lint.rb:83:in `block (3 levels) in define'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/tasks/puppet-lint.rb:81:in `each'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/tasks/puppet-lint.rb:81:in `block (2 levels) in define'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/file_utils_ext.rb:58:in `verbose'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/puppet-lint-2.4.2/lib/puppet-lint/tasks/puppet-lint.rb:75:in `block in define'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `block in execute'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `each'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `execute'
puppet-repo/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:219:in `block in invoke_with_call_chain'

[ashemedai]

Closing this, since the repo now lives somewhere else and nobody could be arsed to duplicate the issues.