lcc-ui-sorting-group-demo/assets/lcc-ui-sorting-group/engine-extend/ui-renderer.ts

import { UIRenderer } from "cc";

declare module 'cc' {
    interface UIRenderer {
        
        /**
         * 排序优先级 - private
         */
        _sortingPriority:number;

        /**
         * 排序优先级
         */
        sortingPriority:number;

        /**
         * 排序透明度
         */
        sortingOpacity:number;
    }
}

if(!('sortingPriority' in UIRenderer.prototype)){
    Object.defineProperty(UIRenderer.prototype, 'sortingPriority', {
        get: function() { 
            return this._sortingPriority; 
        },
        set: function(value) { 
            this._sortingPriority = value; 
        },
        enumerable: true
    });
}