@angular-cool/repository

Cool stateful signal repository for angular

An easy-to-use signal repository that helps you manage your data loading and caching in your angular applications.

Share data across multiple components and services with automatic reloading and state management.

Install

npm install --save @angular-cool/repository

Usage

Create a Repository in your service layer

import { resourceRepository } from '@angular-cool/repository';
import { inject, Injectable } from '@angular/core';
import { ItemId, ItemDTO } from './my-item.model';

@Injectable()
export class MyService {
  private _http = inject(HttpClient);

  private items = resourceRepository<ItemId, ItemDTO>({
    loader: ({ params }) => this._http.get(`https://myapi.com/items/${params}`).toPromise(),
  });
}

Query from repository

import { signal } from '@angular/common';
import { MyService } from './my-service.service';
import { ItemDTO, ItemId } from './my-item.model';

@Component(/*...*/)
export class MyComponent {
  private _myService = inject(MyService);

  private idParam = signal<ItemId>('1' as ItemId);

  protected myItem: Resource<ItemDTO | undefined> = this._myService.items.get(this.idParam);

  protected async updateItem() {
    // Update item on the server here

    await this.myItem.reload(); // This reloads the item from the server and updates the signal for all subscribers
  }
}

Show loading indicator

@if (myItem.isLoading()) {
<div>Loading</div>
}

Manually update value if needed

this.myItem.set(newValue); // Updates the signal for all subscribers

OR

await this._myService.items.setValue(this.idParam(), myValue); // Updates the signal for all subscribers

Manually get value if needed

const value = await this._myService.items.getValue(this.idParam());

Manually update value if needed

await this._myService.items.updateValue(this.idParam(), val => {
  // modify val

  return val;
});

Remove value

await this._myService.items.remove(this.idParam());

License

The MIT License (MIT)

Copyright (c) 2025 Hacklone https://github.com/Hacklone

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.