IMPORTANT: This library is currently in an experimental stage. This means that breaking changes will happen in minor AND patch releases. Upgrade carefully. If you use this in production while in experimental stage, please lock your version to a patch-level version to avoid unexpected breaking changes.

Functions for fetching, caching and updating asynchronous data in Angular

Visit https://tanstack.com/query/latest/docs/framework/angular/overview

• Transport/protocol/backend agnostic data fetching (REST, GraphQL, promises, whatever!)
• Auto Caching + Refetching (stale-while-revalidate, Window Refocus, Polling/Realtime)
• Parallel + Dependent Queries
• Mutations + Reactive Query Refetching
• Multi-layer Cache + Automatic Garbage Collection
• Paginated + Cursor-based Queries
• Load-More + Infinite Scroll Queries w/ Scroll Recovery
• Request Cancellation
• Dedicated Devtools

Angular Query requires Angular 16.

1. Install angular-query

   $ npm i @tanstack/angular-query-experimental
   # or
   $ pnpm add @tanstack/angular-query-experimental
   # or
   $ yarn add @tanstack/angular-query-experimental
   # or
   $ bun add @tanstack/angular-query-experimental

2. Initialize Angular Query by adding provideAngularQuery to your application

   import { provideAngularQuery } from '@tanstack/angular-query-experimental'
   import { QueryClient } from '@tanstack/angular-query-experimental'
   
   bootstrapApplication(AppComponent, {
     providers: [provideAngularQuery(new QueryClient())],
   })

   or in a NgModule-based app

   import { provideHttpClient } from '@angular/common/http'
   import {
   provideAngularQuery,
   QueryClient,
   } from '@tanstack/angular-query-experimental'
   
   @NgModule({
     declarations: [AppComponent],
     imports: [BrowserModule],
     providers: [provideAngularQuery(new QueryClient())],
     bootstrap: [AppComponent],
   })

3. Inject query

   import { injectQuery } from '@tanstack/angular-query-experimental'
   import { Component } from '@angular/core'
   
   @Component({...})
   export class TodosComponent {
     info = injectQuery(() => ({ queryKey: ['todos'], queryFn: fetchTodoList }))
   }

4. If you need to update options on your query dynamically, make sure to pass them as signals

   import { injectQuery } from '@tanstack/angular-query-experimental'
   import { signal, Component } from '@angular/core'
   
   @Component({...})
   export class TodosComponent {
     id = signal(1)
     enabled = signal(false)
   
     info = injectQuery(() => ({
       queryKey: ['todos', this.id()],
       queryFn: fetchTodoList,
       enabled: this.enabled(),
     }))
   }