x-tab title="metrics.js">
                    <x-code-viewer src="./examples/sites/importmap/components/metrics.js" name="components/metrics.js"></x-code-viewer>
                </x-tab>
            </x-tab-panel>
            <p>Some things to take into account when using import maps:</p>
            <ul>
                <li>
                    Import maps can only map to ESM modules, so for UMD libraries a wrapper must be provided, 
                    as with the <code>module.js</code> wrapper for <code>