Fix the issue with the getClassName error under ES6

cocos/core/utils/js-typed.ts

@@ -85,7 +85,7 @@
  * @zh 如果不是空对象或者不是一个对象，返回 `true`；否则返回 `false`。
  */
 export function isEmptyObject (obj: any): boolean {
     for (const key in obj) {
         return false;
     }
     return true;
@@ -102,7 +102,7 @@
  * @param writable @en If the property is writable. @zh 属性是否可写。
  * @param enumerable @en If the property is enumerable. @zh 属性是否可枚举。
  */
 export const value = ((): (object: Record<string | number, any>, propertyName: string, value_: any, writable?: boolean, enumerable?: boolean) => void => {
     const descriptor: PropertyDescriptor = {
         value: undefined,
         enumerable: false,
@@ -128,15 +128,15 @@
  * @param enumerable @en If the property is enumerable. @zh 属性是否可列举。
  * @param configurable @en If the property is configurable. @zh 属性是否可配置。
  */
 export const getset = ((): (object: Record<string | number, any>, propertyName: string, getter: Getter, setter?: Setter | boolean, enumerable?: boolean, configurable?: boolean) => void => {
     const descriptor: PropertyDescriptor = {
         get: undefined,
         set: undefined,
         enumerable: false,
     };
     return (object: Record<string | number, any>, propertyName: string, getter: Getter, setter?: Setter | boolean, enumerable = false, configurable = false): void => {
         if (typeof setter === 'boolean') {
             console.log('Set `setter` to boolean is deprecated. Please don not use like this again.');
             enumerable = setter;
             setter = undefined;
         }
@@ -160,7 +160,7 @@
  * @param enumerable @en If the property is enumerable. @zh 属性是否可列举。
  * @param configurable @en If the property is configurable. @zh 属性是否可配置。
  */
 export const get = ((): (object: Record<string | number, any>, propertyName: string, getter: Getter, enumerable?: boolean, configurable?: boolean) => void => {
     const descriptor: PropertyDescriptor = {
         get: undefined,
         enumerable: false,
@@ -184,7 +184,7 @@
  * @param enumerable @en If the property is enumerable. @zh 属性是否可列举。
  * @param configurable @en If the property is configurable. @zh 属性是否可配置。
  */
 export const set = ((): (object: Record<string | number, any>, propertyName: string, setter: Setter, enumerable?: boolean, configurable?: boolean) => void => {
     const descriptor: PropertyDescriptor = {
         set: undefined,
         enumerable: false,
@@ -250,18 +250,17 @@
         //  for browsers which have name property in the constructor of the object, such as chrome
         if (objOrCtor.name) {
             ret = objOrCtor.name;
-        }
-        if (objOrCtor.toString) {
+        } else if (objOrCtor.toString) {
             let arr;
             const str = objOrCtor.toString();
             if (str.charAt(0) === '[') {
                 // str is "[object objectClass]"
                 // eslint-disable-next-line @typescript-eslint/prefer-regexp-exec
                 arr = /\[\w+\s*(\w+)\]/.exec(str);
             } else {
                 // str is function objectClass () {} for IE Firefox
                 // eslint-disable-next-line @typescript-eslint/prefer-regexp-exec
-                arr = /function\s*(\w+)/.exec(str);
+                arr = /^function\s*(\w+)/.exec(str);
             }
             if (arr && arr.length === 2) {
                 ret = arr[1];
@@ -304,9 +303,9 @@
     }
 
     if (writable) {
         getset(object, oldProp, getter, setter);
     } else {
         get(object, oldProp, getter);
     }
 }
 
@@ -324,7 +323,7 @@
 export function obsoletes (obj, objName, props, writable): void {
     for (const obsoleted in props) {
         const newName = props[obsoleted];
         obsolete(obj, `${objName}.${obsoleted}`, newName, writable);
     }
 }
 
@@ -367,7 +366,7 @@
         return '';
     }
     if (subst.length === 0) {
         return `${msg}`;
     }
 
     const hasSubstitution = typeof msg === 'string' && REGEXP_NUM_OR_STR.test(msg);
@@ -375,15 +374,15 @@
         for (const arg of subst) {
             const regExpToTest = typeof arg === 'number' ? REGEXP_NUM_OR_STR : REGEXP_STR;
             if (regExpToTest.test(msg as string)) {
                 const notReplaceFunction = `${arg}`;
                 msg = (msg as string).replace(regExpToTest, notReplaceFunction);
             } else {
                 msg += ` ${arg}`;
             }
         }
     } else {
         for (const arg of subst) {
             msg += ` ${arg}`;
         }
     }
     return msg as string;
@@ -619,7 +618,7 @@
 export const _nameToClass: Record<string, Constructor> = createMap(true);
 
 function setup (tag: string, table: Record<string | number, any>, allowExist: boolean): (id: string, constructor: Constructor) => void {
     return function (id: string, constructor: Constructor): void {
         // deregister old
         // eslint-disable-next-line no-prototype-builtins
         if (constructor.prototype.hasOwnProperty(tag)) {