Function valueAfter_

valueAfter_<TEvent, TValue>(valueOf): ((this, input) => AfterEvent<[TValue]>)
Creates an event processor that sends the values of events incoming from AfterEvent keeper, and does not share the outgoing events supply.
Type Parameters
- TEvent extends any[]
  
  Incoming event type.
- TValue
  
  Event value type.
Parameters
- valueOf: ((this, ...event) => undefined | null | false | TValue)
  
  Event value detector function. Accepts incoming event as parameters and returns either its value, or false/null/undefined to ignore it.
  - - (this, ...event): undefined | null | false | TValue
    - Parameters
      
      this: void
      
      Rest ...event: TEvent
      
      Returns undefined | null | false | TValue
Returns ((this, input) => AfterEvent<[TValue]>)
New event processor.
- - (this, input): AfterEvent<[TValue]>
  - Parameters
    - this: void
    - input: AfterEvent<TEvent>
    Returns AfterEvent<[TValue]>
- Defined in proc7ts/fun-events/src/processors/value-after.ts:63
valueAfter_<TEvent, TValue>(valueOf, fallback): ((this, input) => AfterEvent<[TValue]>)
Creates an event processor that sends the values of events incoming from OnEvent sender or a fallback value, and does not share the outgoing events supply.
Type Parameters
- TEvent extends any[]
  
  Incoming event type.
- TValue
  
  Event value type.
Parameters
- valueOf: ((this, ...event) => undefined | null | false | TValue)
  
  Event value detector function. Accepts incoming event as parameters and returns either its value, or false/null/undefined to ignore it.
  - - (this, ...event): undefined | null | false | TValue
    - Parameters
      
      this: void
      
      Rest ...event: TEvent
      
      Returns undefined | null | false | TValue
- fallback: ((this) => TValue)
  
  A function creating a fallback value.
  - - (this): TValue
    - Parameters
      
      this: void
      
      Returns TValue
Returns ((this, input) => AfterEvent<[TValue]>)
New event processor.
- - (this, input): AfterEvent<[TValue]>
  - Parameters
    - this: void
    - input: OnEvent<TEvent>
    Returns AfterEvent<[TValue]>
- Defined in proc7ts/fun-events/src/processors/value-after.ts:80

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