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miniprogram-sync-state

v1.2.7

Published

miniprogram sync state library

Readme

miniprogram-sync-state

零侵入,移植和移除都极其方便的一款原生小程序同步状态库。 类 react-redux api 风格。

更新

  • 1.2.0 新增 diff 比对,优化性能

  • 1.1.0 新增组件连接器(connectComponent) 代码优化

安装

npm 构建

npm 使用此库需要依赖小程序基础库 2.2.1 以上版本,同时依赖开发者工具的 npm 构建。具体详情可查阅官方 npm 文档

npm install --save miniprogram-sync-state

小程序开发者工具 -> 详情 -> 使用 npm 模块

小程序开发者工具 -> 工具 -> 构建 npm

const { createStore } = require('miniprogram-sync-state')

直接引入

复制 node_modules/miniprogram-sync-state 项目(或自行 clone github 项目 npm run build 生成)下的小程序生成文件 miniprogram_dist/index.js 置于项目文件夹内引用

const { createStore } = require('../../libs/miniprogram-sync-state/index.js')

使用

API

const { createStore, connect, connectComponent, setState } = require('miniprogram-sync-state')

/**
* connect
* @param {Function} mapStateToData
* @param {Function} mapMethodToPage
* @return {Function}
*/

/**
 * connectComponent
 * @param {Function} mapStateToData
 * @param {Function} mapMethodToPage
 * @return {Function}
 */

 /**
 * createStore
 * @param {Object} state
 * @return {Object}
 */

 /**
 * setState
 * @param {Object | Function} state
 */

示例

// app.js

const initStore = {
    hasLogin: false,
    userName: ''
}
const { createStore } = require('miniprogram-sync-state')
const Store = createStore(initStore)

App({
    onLaunch() {},
    Store
})
// pages/login/index.js

let app = getApp()
const { connect } = app.Store

const LoginPage = {
    onReady(e) {},
    onShow() {},
    bindUserNameChange(e) {
        this.setData({
            username: e.detail.value
        })
    },
    bindLogin() {
        if (!this.data.username) return
        this.login(this.data.username)
        wx.navigateBack({
            delta: 1
        })
    }
}
const ConnectPage = connect(
    ({ hasLogin, userName }) => {
        return {
            hasLogin,
            userName
        }
    },
    (setState, state) => ({
        login(userName) {
            setState({
                hasLogin: true,
                userName
            })
        }
    })
)(LoginPage)

Page(ConnectPage)

更具体使用可查看demo

注意

禁止在任何能获取到state实例的地方直接修改state,以免造成未知错误(这一点同react),虽然可以在状态库中做深拷贝避免此隐患,但是需要考虑性能问题以及是否必要,最终决定采用规范的方式做限制。

// 🚫 以下为禁止示例

const ConnectPage = connect(state => {
    state.userInfo.userName = 'err use'
    return {
        userInfo: state.userInfo
    }
})(Page)