NG Store

A simple store built with Angular signals. The state information can be stored in Store and entities can be stored in EntityStore. The Store and EntityStore are built with Angular signals

Installation

Install the library

npm install @js-smart/ng-store

Usage

Store

To use the Store, create store service and provide correct type. This brings update method from Store and data can be updated using this method

login-store.service.ts

import { Store } from '@js-smart/ng-store';
import { Injectable } from '@angular/core';

export interface LoginState {
  isLoggedIn: boolean;
  userName: string;
}

@Injectable({
  providedIn: 'root',
})
export class LoginStore extends Store<LoginState> {
  constructor() {
    super();
  }
}

login.component.ts And inject the store in the component and use update method to update the state and data property to get the state

import { LoginStore } from './login-store.service';
import { Component, inject } from '@angular/core';

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
})
export class LoginComponent {
  loginStore = inject(LoginStore);
  loginState = this.loginStore.data;

  login() {
    this.loginStore.update({ isLoggedIn: true, userName: 'John Doe' });
  }

  logout() {
    this.loginStore.update({ isLoggedIn: false, userName: '' });
  }
}

Entity Store

To use the Entity Store, create store service and provide correct type. This brings findById, set, upsert,upsertMulti and remove methods from Entity Store and data can be updated using these methods

employee-store.service.ts

import { Store } from '@js-smart/ng-store';
import { Injectable } from '@angular/core';

export interface Employee {
  id: number;
  firstName: string;
  lastName: string;
  email: string;
  phone: string;
  age: number;
}

@Injectable({
  providedIn: 'root',
})
export class EmployeeStore extends EntityStore<Employee> {
  constructor() {
    super();
  }
}

employee.component.ts And inject the store in the component and use set method to update the state and data property to get the state

import { LoginStore } from './login-store.service';
import { Component, inject,OnInit } from '@angular/core';

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
})
export class LoginComponent implements OnInit {
  employeeService = inject(EmployeeService);
  employeeStore = inject(EmployeeStore);

  ngOnInit(): void {
    this.employeeService.getEmployees().subscribe((employees) => {
      this.employeeStore.set(employees);
    });
  }
}

Demo

1. Run npm run start to start the demo project
2. Open http://localhost:4300 in your browser

Running unit tests

Run ng test to execute the unit tests