[improvement] optimize isNaN (#3988)

src/utils/validate/date.ts

@@ -0,0 +1,7 @@
+import { isNaN } from './number';
+
+export function isDate(date: Date): boolean {
+  return (
+    Object.prototype.toString.call(date) === '[object Date]' && !isNaN(date.getTime())
+  );
+}

src/utils/validate/number.ts

@@ -1,3 +1,13 @@
+/* eslint-disable no-self-compare */
+
 export function isNumber(value: string): boolean {
   return /^\d+(\.\d+)?$/.test(value);
 }
+
+export function isNaN(value: any): boolean {
+  if (Number.isNaN) {
+    return Number.isNaN(value);
+  }
+
+  return value !== value;
+}