Function seenLastToUndefined

seenLastToUndefined<TIn>(eq?): Process<TIn, TIn | undefined>
If a value is same as the previous value, undefined is emitted instead.
Type Parameters
- TIn
Parameters
- Optionaleq: ((a: TIn, b: TIn) => boolean)
  Equality function. If not specified, === semantics are used.
  - - (a, b): boolean
    - Parameters
      a: TIn
      b: TIn
      Returns boolean
Returns Process<TIn, TIn | undefined>