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Diffstat (limited to 'tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/takeWhile.ts')
-rw-r--r-- | tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/takeWhile.ts | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/takeWhile.ts b/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/takeWhile.ts deleted file mode 100644 index f190e2a544..0000000000 --- a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/takeWhile.ts +++ /dev/null @@ -1,110 +0,0 @@ -import { Operator } from '../Operator'; -import { Observable } from '../Observable'; -import { Subscriber } from '../Subscriber'; -import { OperatorFunction, MonoTypeOperatorFunction, TeardownLogic } from '../types'; - -export function takeWhile<T, S extends T>(predicate: (value: T, index: number) => value is S): OperatorFunction<T, S>; -export function takeWhile<T, S extends T>(predicate: (value: T, index: number) => value is S, inclusive: false): OperatorFunction<T, S>; -export function takeWhile<T>(predicate: (value: T, index: number) => boolean, inclusive?: boolean): MonoTypeOperatorFunction<T>; - -/** - * Emits values emitted by the source Observable so long as each value satisfies - * the given `predicate`, and then completes as soon as this `predicate` is not - * satisfied. - * - * <span class="informal">Takes values from the source only while they pass the - * condition given. When the first value does not satisfy, it completes.</span> - * - * ![](takeWhile.png) - * - * `takeWhile` subscribes and begins mirroring the source Observable. Each value - * emitted on the source is given to the `predicate` function which returns a - * boolean, representing a condition to be satisfied by the source values. The - * output Observable emits the source values until such time as the `predicate` - * returns false, at which point `takeWhile` stops mirroring the source - * Observable and completes the output Observable. - * - * ## Example - * Emit click events only while the clientX property is greater than 200 - * ```javascript - * import { fromEvent } from 'rxjs'; - * import { takeWhile } from 'rxjs/operators'; - * - * const clicks = fromEvent(document, 'click'); - * const result = clicks.pipe(takeWhile(ev => ev.clientX > 200)); - * result.subscribe(x => console.log(x)); - * ``` - * - * @see {@link take} - * @see {@link takeLast} - * @see {@link takeUntil} - * @see {@link skip} - * - * @param {function(value: T, index: number): boolean} predicate A function that - * evaluates a value emitted by the source Observable and returns a boolean. - * Also takes the (zero-based) index as the second argument. - * @param {boolean} inclusive When set to `true` the value that caused - * `predicate` to return `false` will also be emitted. - * @return {Observable<T>} An Observable that emits the values from the source - * Observable so long as each value satisfies the condition defined by the - * `predicate`, then completes. - * @method takeWhile - * @owner Observable - */ -export function takeWhile<T>( - predicate: (value: T, index: number) => boolean, - inclusive = false): MonoTypeOperatorFunction<T> { - return (source: Observable<T>) => - source.lift(new TakeWhileOperator(predicate, inclusive)); -} - -class TakeWhileOperator<T> implements Operator<T, T> { - constructor( - private predicate: (value: T, index: number) => boolean, - private inclusive: boolean) {} - - call(subscriber: Subscriber<T>, source: any): TeardownLogic { - return source.subscribe( - new TakeWhileSubscriber(subscriber, this.predicate, this.inclusive)); - } -} - -/** - * We need this JSDoc comment for affecting ESDoc. - * @ignore - * @extends {Ignored} - */ -class TakeWhileSubscriber<T> extends Subscriber<T> { - private index: number = 0; - - constructor( - destination: Subscriber<T>, - private predicate: (value: T, index: number) => boolean, - private inclusive: boolean) { - super(destination); - } - - protected _next(value: T): void { - const destination = this.destination; - let result: boolean; - try { - result = this.predicate(value, this.index++); - } catch (err) { - destination.error(err); - return; - } - this.nextOrComplete(value, result); - } - - private nextOrComplete(value: T, predicateResult: boolean): void { - const destination = this.destination; - if (Boolean(predicateResult)) { - destination.next(value); - } else { - if (this.inclusive) { - destination.next(value); - } - destination.complete(); - } - } -} |