Manage App Services

Follow these steps to add or update service functions and their wiring.

1) Create or update the service file

Place service functions in src/stores/<name>.service.ts and keep them focused on side effects or store updates.

If requested, call the service when the atom is connected extending the atom with withConnectHook

Example:

import { moviesAtom } from './movies'
import { withConnectHook } from '@reatom/core'

export async function loadMovies(): Promise<void> {
  const response = await fetch('/api/movies')
  const movies = (await response.json()) as Movie[]
  moviesAtom.set(movies)
}

// optionally extend the atom to load movies on connect
moviesAtom.extend(withConnectHook(loadMovies))

2) Wire the service to DOM tasks

Typically, the service is triggered by DOM tasks, register it in src/setup/services.ts via registerTaskHandler.

Example:

import { registerTaskHandler } from '../helpers/domTask'
import { deleteMovie } from '../stores/movies.service'

registerTaskHandler('delete-movie', deleteMovie)

Ensure the task is defined in src/setup/tasks.ts with the correct params/returns.

3) Update call sites

Search for all usages and update parameters or return handling to match the service signature.

Use:

• rg -n "registerTaskHandler\\(|\\.service\\.ts|loadMovies|deleteMovie" src

4) Keep types strict and explicit

Prefer typed params and explicit return types for service functions, and avoid unused locals/params.

5) Call the service from components using events (tasks)

Dispatch tasks from components via dispatchTask. Never call service functions directly from components.