Function debounceIf

debounceIf<T>(debounceTimeInMs, predicate, scheduler?): ((source) => Observable<undefined | T>)
Debounce values on the stream if the predicate returns true.

Examples:

Example 1

debounceTimeInMs: don't matter in this example predicate: () => false
```
source: 1-2-3|
result: 1-2-3|
```
Example 2

10ms equals 1 frame debounceTimeInMs: 10 predicate: () => true
```
source: 1-2-3|
result: -1-2-3|
```
Example 3 Debounce only on even values

10ms equals 1 frame debounceTimeInMs: 10 predicate: (_, a) => a % 2 === 0
```
source: 1-2-(3|)
result: 1--2(3|)
```
Type Parameters
- T
Parameters
- debounceTimeInMs: number
  
  time to debounce in milliseconds
- predicate: ((previous, last) => boolean)
  
  called with previous and last value, when evaluates to true debounce
  - - (previous, last): boolean
    - Parameters
      
      previous: undefined | T
      
      last: T
      
      Returns boolean
- Optional scheduler: SchedulerLike
  
  the scheduler
Returns ((source) => Observable<undefined | T>)
- - (source): Observable<undefined | T>
  - Parameters
    - source: Observable<T>
    Returns Observable<undefined | T>
- Defined in operators/debounce-if.ts:53

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