add distance date

src/components/DistanceDate.svelte

@@ -0,0 +1,24 @@
+<script context="module">
+    import { formatDistance } from 'date-fns'
+    import { readable } from 'svelte/store'
+
+    const format = (date, baseDate) => formatDistance(date, baseDate, { addSuffix: true })
+
+    const now = readable(new Date(), set => {
+        const interval = setInterval(() => {
+            set(new Date())
+        }, 1000)
+
+        return () => clearInterval(interval)
+    })
+</script>
+
+<script>
+    export let date
+
+    $: iso = date.toISOString()
+    $: text = format(date, $now)
+</script>
+
+<time datetime={iso}>{text}</time>
+