Proxy store

Simple js store based on es6+ native proxy objects

Motivation

With [email protected] came new context api, which is pretty awesome and can replace too large, for small and medium projects, Flux approach (in my opinion Redux needs too many boilerplate code, even creating store was tricky).

Oh, and here we go - Proxy arrives at the stage with pretty awesome support from Browsers (caniuse almost green). These two features gives us powerful toolbox for creating great solutions. In this project I want connect them into very simple, object based, store which will automatically detect changes (I know, it's a kind of magic) and inform subscribers about them.

This project is a PoC of store Core, in second step I'll create connection for React.

Samples

info object looks like:

{
  storeName, // {string} with store key
  key, // {string} key indicate which value changed
  value, // {any} new value
  oldValue, // {any} old value
}

Basic use cases

import {
    createStore
} from 'simple-proxy-store';

const myStore = createStore({
  test : new class {
    constructor(){
      this.a = 123;
    }

    setA() {
      this.a = Math.random()*100;
    }

    set c(val) {
      return val;
    }
  }
});

myStore.subscribe()((info) => {
  console.log(info);
});

import {
    createStore
} from 'simple-proxy-store';

class A {
    constructor(){
        this.a = 123;
    }
    
    setA() {
      this.a = Math.random()*100;
    }
}

class B {
    constructor(){
        this.data = null; 
    }
    
    async fetchData() {
      this.data = await fetch('data-b.json'); // async works perfect!
    }
}

class C {
    constructor(){
        this.data = null; 
    }
    
    async fetchData() {
      this.data = await fetch('data-c.json'); // async works perfect!
    }
}

const {subscribe, store} = createStore({
  a: new A(),
  b: new B(),
  c: new C(),
});

// subscribe all changes
subscribe()(info => {
  console.log(info);
});

// subscribe only 'a' store
subscribe(['a'])((info) => {
  compareOldWithNewStore(info)
});

store.a.setA();
store.b.fetchData();

store.a = 123;