Function kosEffect

kosEffect<T, FireImmediately>(expression, effect, opts?): IReactionDisposer
{@inheritDoc reaction}
Type Parameters
- T
- FireImmediately extends boolean = false
Parameters
- expression: ((r) => T)
  - - (r): T
    - Parameters
      r: IReactionPublic
      Returns T
- effect: ((arg, prev, r) => void)
  - - (arg, prev, r): void
    - Parameters
      arg: T
      prev: FireImmediately extends true
      ? undefined | T
      : T
      r: IReactionPublic
      Returns void
- Optional opts: IReactionOptions<T, FireImmediately>
Returns IReactionDisposer