Method removeObserver

src/queryCore/core/query.ts:339–363

(observer: QueryObserver<any, any, any, any, any>)

  }

  removeObserver(observer: QueryObserver<any, any, any, any, any>): void {
    if (this.observers.indexOf(observer) !== -1) {
      this.observers = this.observers.filter(x => x !== observer)

      if (!this.observers.length) {
        // If the transport layer does not support cancellation
        // we'll let the query continue so the result can be cached
        if (this.retryer) {
          if (this.retryer.isTransportCancelable || this.abortSignalConsumed) {
            this.retryer.cancel({ revert: true })
          } else {
            this.retryer.cancelRetry()
          }
        }

        if (this.cacheTime) {
          this.scheduleGc()
        } else {
          this.cache.remove(this)
        }
      }

      this.cache.notify({ type: 'observerRemoved', query: this, observer })
    }
  }

  getObserversCount(): number {
    return this.observers.length