Function removeFluidObserver

packages/shared/src/fluids.ts:183–196

(target: any, observer: FluidObserver)

): void

function removeFluidObserver(target: any, observer: FluidObserver) {
  const observers: Set<FluidObserver> = target[$observers]
  if (observers && observers.has(observer)) {
    const count = observers.size - 1
    if (count) {
      observers.delete(observer)
    } else {
      target[$observers] = null
    }
    if (target.observerRemoved) {
      target.observerRemoved(count, observer)
    }
  }
}

const setHidden = (target: any, key: any, value: any) =>
  Object.defineProperty(target, key, {