{#each value.slice(0, 3) as row}
{#each row.slice(0, 3) as cell}
{cell}
{/each} {#if row.length > 3}
...
{/if}
{/each} {#if value.length > 3}
{#each Array(Math.min(4, value[0].length)) as _}
...
{/each}
{/if}