//mixins.js
function mixinPage () {
const originPage = Page
    Page = (options) => {
        options = mergePage(options.mixins, options)
        originPage(options)
    }
}
const ORIGIN_PROPERTIES_PAGE = [
    'data'
]
const ORIGIN_METHODS = [
    'onLoad',
    'onReady',
    'onShow',
    'onHide',
    'onUnload',
    'onPullDownRefresh',
    'onReachBottom',
    'onShareAppMessage',
    'onPageScroll',
    'onResize',
    'onTabItemTap'
]
function mergePage (mixins, options) {
    mixins.forEach((mixin) => {
        if (typeof mixin == 'object') {
            for (let key in mixin) {
                if (ORIGIN_PROPERTIES_PAGE.includes(key)) {
                    options[key] = { ...mixin[key], ...options[key] }
                } else if (ORIGIN_METHODS.includes(key)) {
                    const originFunc = options[key]
                    options[key] = function (...args) {
                        mixin[key].call(this, ...args)
                        return originFunc && originFunc.call(this, ...args)
                    }
                } else {
                    options = { ...mixin, ...options }
                }
            }
        }
    })
    return options
}
mixinPage()
module.exports = {
    data: {
        aaa999: ''
    },
    onShow() {
        this.setData({
                'aaa999':333
        })
    }
}

//混入文件
module.exports = {
    data: {
       a:1
    },
    onShow() {
    },
  XXXXX(){
 },
}

//页面配置
Page({
mixins:[......]