Electron-mst NPM

Electron-MST

electron-mst is a end-to-end electron state management to synchronization status across multiple electron processes, powered by mobx-state-tree.

You can use electron-mst with a a simple and elegant way like using mobx.

You also can use mobx-state-tree together with React, or with any other view library.

✨Installation

Generally, your packageManager you help auto install the peerDependencies. (electron & mobx-state-tree)

# with yarn
yarn add electron-mst

# with pnpm
pnpm install electron-mst

👀 Overview

📦 Ready out of the box
🎯 Based on the official mobx-state-tree, api will be familiar to you if you have used MST
🌱 High cohesion & Low coupling; Highly readable
💪 Inter-Process Communication is aided by Electron's native ipc channel, which supports preload's sandbox mode by default
🖥 Supports the creation of multiple MST stores and MST Store nesting

🌱 React Demo

demo boilerplate power by electron-vite

# clone the project
git clone https://github.com/BanShan-Alec/electron-mobx-state-tree

# enter the project directory
cd electron-mobx-state-tree

# install dependency
pnpm install

# try it by yourself
pnpm run dev

⚙️Documentation

Basic Example

Step0: expose electron-mst bridge

// electron/preload/index.ts
import { exposeMSTBridge } from 'electron-mst/preload';

exposeMSTBridge();

Step1: decalre a model & create store

// shared/store/user.ts
import { createStore } from 'electron-mst';
import { types } from 'mobx-state-tree';

export const UserStore = types
    .model({
        name: types.string,
        age: types.number,
    })
    .views((ctx) => {
        return {
            get isAdult() {
                return ctx.age >= 18;
            },
        };
    })
    .actions((ctx) => {
        return {
            updateName(name: string) {
                ctx.name = name;
            },
            updateAge(age: number) {
                ctx.age = age;
            },
        };
    });

export const user$ = createStore(UserStore, {
    name: 'Jack',
    age: 18,
});

Step2: init sdk in main process

// electron/main/index.ts
import { initMST } from 'electron-mst/main';
import { UserStore } from '@/shared/store/user';

initMST([UserStore]);

Step3: use Store Instance in renderer

// src/App.tsx
import React from 'react';
import { useEffect, useState } from 'react';
import logoVite from './assets/logo-vite.svg';
import logoElectron from './assets/logo-electron.svg';
import './App.css';
import { observer } from 'mobx-react-lite';
import { user$ } from '@/shared/store/user';

let App = (props: IProps) => {
    const {} = props;
    const { age, updateAge } = user$;

    const handleCreateWindow = (e: any) => {
        // self-realization...
    };

    useEffect(() => {
        // watch state change in React
        console.log("age changed", age)
    }, [age]);

    return (
        <div className="card">
            <code>{JSON.stringify(user$, null, 2)}</code>
            <button
                onClick={() => {
                    // invoke action
                    updateAge(age + 2);
                }}
                >
                Update User
            </button>
        </div>
    );
};

interface IProps {}

App = observer(App);
export default App;

Step4: new another window to view the user$

You can view the user$ state has sync automatically between two Renderer

basic-demo

More Example

The Basic Example show us how to init electron-mst & create a mst stroe & use store in renderer.
If I want to use mst store in main process .What should I do?

Use In Main Process

Base on the basic Example，you just need to change the step2.
The argument snapshot should be the same as Renderer createStore’s snapshot.

// electron/main/index.ts
import { app, BrowserWindow, shell, ipcMain } from 'electron';
import { initMST, getStore Instance } from 'electron-mst/main';
import { UserStore } from '@/shared/store/user';
import { autorun, reaction } from 'mobx';

initMST([
    {
        store: UserStore,
        snapshot: {
            name: 'Jack',
            age: 18,
        },
    },
]);

function createWindow() {...}

app.whenReady().then(() => {
    createWindow();
    // Get Store Instance (after intMST done)
    const user$ = getStoreInstance(UserStore);

    // watch Store Instance change
    reaction(
        () => user$.age,
        (newVal, oldVal) => {
            console.log(`user.count oldVal ${oldVal} -> newVal ${newVal}`);
        }
    );
    autorun(() => {
        console.log('user$.age', user$.age);
        if (user$.age > 30) {
            // invoke action, will auto sync to other process
            user$.updateName('Tom');
        }
    });
});

🎯Realize & Design

graph
    subgraph Main Process
        M_Store1[Store Instance1]
        M_Store2[Store Instance2]
        M_Store3[Store3]
        StoreManager
    end

    subgraph RendererA
        RA_Store1_Proxy[[Store Instance1-Proxy]]
        RA_Bridge[Electron MST Bridge]
    end

    subgraph RendererB
        RB_Store1_Proxy[[Store Instance1-Proxy]]
        RB_Store2_Proxy[[Store Instance2-Proxy]]
        RB_Bridge[Electron MST Bridge]
    end

    StoreManager -.- M_Store1
    StoreManager -.- M_Store2
    StoreManager -.- M_Store3
    M_Store1 <-->|IPC| RA_Bridge
    RA_Bridge <-.-> RA_Store1_Proxy
    M_Store1 <-->|IPC| RB_Bridge
    M_Store2 <-->|IPC| RB_Bridge
    RB_Bridge <-.-> RB_Store1_Proxy
    RB_Bridge <-.-> RB_Store2_Proxy
    Client --->|User Operation| RB_Store2_Proxy

❔ FAQ

Q1: Can I create multiple Store with same name?

A1: No! Please make sure your Store has a unique name. Because electron-mst strongly dependent on Store’s name. The Store’s name cannot be repeated or empty.