mk_framework/mk_framework/assets/script/Main.ts

const { ccclass, property } = cc._decorator;

@ccclass
export default class main extends cc.Component {
    @property({
        type: cc.Asset,
    })
    mainfestUrl: cc.Asset = null;
    
    start() {
        console.log(mk.time.format(12345));   
    }
}