<span class="token function">isFilePath</span><span class="token punctuation">(</span>pluginName<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">Error</span><span class="token punctuation">(</span><span class="token string">&quot;'extends' cannot use a file path for plugins.&quot;</span><span class="token punctuation">