feat: additional expenses

src/types/utils.ts

@@ -56,4 +56,13 @@ export const strTimeToFloatHours = (time: string): number => {
     const minutes = parseInt(values[1]);
 
     return hours + minutes / 60;
-}
+}
+
+export const dateToString = (date: Date | null) => {
+    if (date === null) return null;
+    const month = date.getMonth() + 1;
+    const day = date.getDate();
+    const monthStr = month < 10 ? `0${month}` : month;
+    const dayStr = day < 10 ? `0${day}` : day;
+    return `${date.getFullYear()}-${monthStr}-${dayStr}`;
+};