<% for (let i = 0; i < product.length; i++) { %>
...
<div class="p-4 tm-bg-gray tm-catalog-item-description">
<h3 class="tm-text-primary mb-3 tm-catalog-item-title"><%= product[i].title %></h3>
<p class="tm-catalog-item-text">
<%= product[i].description.length > 90 ? product[i].description.substring(0, 90) + '...' : product[i].description %>
</p>
</div>
...
<% } %>