implemented usePrompt hook

src/routePlanner/hooks/usePrompt/index.ts

@@ -0,0 +1,14 @@
+import { useCallback } from 'preact/hooks';
+
+export const usePrompt = (
+    message: string,
+    defaultValue: string,
+    onChange: (newValue: string) => void,
+) => {
+    return useCallback(() => {
+        const newValue = prompt(message, defaultValue);
+        if (newValue?.length) {
+            onChange(newValue);
+        }
+    }, [message, defaultValue, onChange]);
+};

src/routePlanner/marker.tsx

@@ -1,13 +1,12 @@
-import { useCallback } from 'preact/hooks';
+import { usePrompt } from './hooks/usePrompt';
 import type { MarkerProps } from './types';
 
 export const MarkerComponent = ({ marker, isFirst, isLast }: MarkerProps) => {
-    const changeLongLabel = useCallback(() => {
-        const newLongLabel = prompt('Enter new label', marker.longLabel);
-        if (newLongLabel?.length) {
-            marker.changeLongLabel(newLongLabel);
-        }
-    }, [marker]);
+    const changeLongLabel = usePrompt(
+        'Enter new label',
+        marker.longLabel,
+        marker.changeLongLabel,
+    );
 
     return (
         <li key={marker.key}>