Reactivity adapter for µsignal

Adapter

• ❌ Automatic Cleanup
• ❌ Scope check

The API of usignal doesn't allow automatic cleanup nor reactive scope checking. With usignal, you can return a function from your effect that will be called on cleanup. Use this one to cleanup your cursors (see below for an example). You also must manually disable reactivity when making calls outside a reactive scope to avoid memory leaks. You can do this by passing { reactive: false } to your options (e.g. <collection>.find({ ... }, { reactive: false })).

Installation

  $ npm install signaldb-plugin-usignal

Usage

import { Collection } from 'signaldb'
import reactivityAdapter from 'signaldb-plugin-usignal'
import { effect } from 'usignal'

const posts = new Collection({
  reactivity: reactivityAdapter,
})

effect(() => {
  const cursor = posts.find({ author: 'John' })
  console.log(cursor.count())
  return () => {
    // usignal doesn't allow to do automatic cleanup, so we have to do it ourself
    cursor.cleanup()
  }
})