react-query/examples/angular/basic/src/app/app.config.ts

import { provideHttpClient, withFetch } from '@angular/common/http'
import {
  QueryClient,
  provideTanStackQuery,
  withDevtools,
} from '@tanstack/angular-query-experimental'
import type { ApplicationConfig } from '@angular/core'

export const appConfig: ApplicationConfig = {
  providers: [
    provideHttpClient(withFetch()),
    provideTanStackQuery(
      new QueryClient({
        defaultOptions: {
          queries: {
            gcTime: 1000 * 60 * 60 * 24, // 24 hours
          },
        },
      }),
      withDevtools(),
    ),
  ],
}