export class StoreController {
    constructor(host, store, selector) {
      this.host = host
      this.store = store
      this.selector = selector
      host.addController(this)
    }
  
    hostConnected() {
      this._unsub = this.store.subscribe(
        (state) => {
          const next = this.selector(state)
          if (next !== this.value) {
            this.value = next
            this.host.requestUpdate()
          }
        }
      )
      this.value = this.selector(this.store.getState())
    }
  
    hostDisconnected() { this._unsub?.() }
  }