Fix month/year not updating when value changes

Author: probablykasper

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+## Next
+- Fix month/year not updating when `value` is assigned to
+
 ## 2.2.4 - 2022 Dec 1
 - Fix buttons causing form submissions
 

src/lib/DatePicker.svelte

@@ -32,6 +32,9 @@
 
   /** The date shown in the popup when none is selected */
   let browseDate = value ? cloneDate(value) : cloneDate(defaultDate)
+  $: if (browseDate.getTime() !== value?.getTime()) {
+    browseDate = value ? cloneDate(value) : browseDate
+  }
 
   /** The earliest year the user can select */
   export let min = new Date(defaultDate.getFullYear() - 20, 0, 1)