onstant">CONFIG_ROOT</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">dir</span> <span class="ruby-operator">==</span> <span class="ruby-value str">'CONFIG_ROOT'</span>
42:         <span class="ruby-identifier">raise</span> <span class="ruby-constant">InvalidLoadPathError</span>, <span class="ruby-node">&quot;This directory is invalid: [#{dir.inspect}]&quot;</span> <span class="ruby-keyword kw">unless</span> <span class="ruby-constant">Dir</span>.<span class="ruby-identifier">exi