@kitmi/jacaranda/cjs/helpers/DeferredService.js

JavaScript application framework

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "default", {
    enumerable: true,
    get: function() {
        return _default;
    }
});
class DeferredService {
    constructor(serviceFactory){
        this.instance = null;
        // 创建一个 Proxy 来拦截属性和方法访问
        return new Proxy(this, {
            get: (target, prop)=>{
                // 延迟创建 service 实例
                if (!target.instance) {
                    target.instance = serviceFactory();
                }
                // 获取实例上的属性或方法
                const serviceInstanceProp = target.instance[prop];
                // 如果是方法，返回一个绑定到实例的方法
                if (typeof serviceInstanceProp === 'function') {
                    return serviceInstanceProp.bind(target.instance);
                }
                // 否则返回属性值
                return serviceInstanceProp;
            },
            set: (target, prop, value)=>{
                if (!target.instance) {
                    target.instance = serviceFactory();
                }
                target.instance[prop] = value;
                return true;
            }
        });
    }
}
const _default = DeferredService;

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