add focus element utility

package.json

@@ -6,6 +6,10 @@
 	"module": "index.ts",
 	"main": "index.ts",
 	"exports": {
+		"./util": {
+			"types": "./util.ts",
+			"svelte": "./util.ts"
+		},
 		"./complete": {
 			"types": "./complete.ts",
 			"svelte": "./complete.ts"

util.ts

@@ -0,0 +1,9 @@
+import type { Action } from 'svelte/action';
+
+/**
+ * Focuses the given HTML element.
+ * @param node - The HTML element to focus.
+ */
+export const focus: Action<HTMLElement> = (node) => {
+	node.focus();
+};