Function takeWhile

takeWhile<T, R>(condition: ((v: T, idx: number) => v is R)): Transformer<T, R>
Take items from a stream until a given condition is false, then close the output. The condition function is not called again after it returns false.

If the condition function is typed as a Typescript type guard (i.e. as returning v is SomeType), then the resulting source will be typed as Source.
Type Parameters
- T
- R
Parameters
- condition: ((v: T, idx: number) => v is R)
  - - (v: T, idx: number): v is R
    - Parameters
      v: T
      idx: number
      Returns v is R
Returns Transformer<T, R>
- Defined in src/operators.ts:335
takeWhile<T>(condition: ((v: T, idx: number) => boolean)): Transformer<T>
Type Parameters
- T
Parameters
- condition: ((v: T, idx: number) => boolean)
  - - (v: T, idx: number): boolean
    - Parameters
      v: T
      idx: number
      Returns boolean
Returns Transformer<T>
- Defined in src/operators.ts:336