first commit

src/utils/tools.ts

@@ -0,0 +1,20 @@
+export function isEmptyObject(obj: any) {
+  return obj && Object.keys(obj).length === 0 && obj.constructor === Object;
+}
+
+export function getYear(date = new Date()) {
+  if (!(date instanceof Date)) {
+    throw new TypeError('Invalid date object');
+  }
+  return date.getFullYear();
+}
+
+export function debounce<T extends (...args: any[]) => any>(fn: T, delay = 300) {
+  let timer: ReturnType<typeof setTimeout>;
+  return (...args: Parameters<T>) => {
+    if (timer) clearTimeout(timer);
+    timer = setTimeout(() => {
+      fn(...args);
+    }, delay);
+  };
+}