">|</span> <span class="type"><a href="/api/store/type-aliases/callback/mapvalue/">MapValue</a></span></code></td><td><p>The <a href="/api/store/type-aliases/store/value/"><code>Value</code></a> to be set, or a <a href="/api/store/type-aliases/callback/mapvalue/"><code>MapValue</code></a> function to update it.</p></td></tr><tr><th class="right">returns</th><td><code><span class="keyword">this</span></code></td><td><p></p><p>A reference to the <a href="/api/store/interfaces/store/store/"><code>Store</code><