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diff --git a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/sampleTime.ts b/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/sampleTime.ts
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--- a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/sampleTime.ts
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-import { Observable } from '../Observable';
-import { Operator } from '../Operator';
-import { Subscriber } from '../Subscriber';
-import { async } from '../scheduler/async';
-import { MonoTypeOperatorFunction, SchedulerAction, SchedulerLike, TeardownLogic } from '../types';
-
-/**
- * Emits the most recently emitted value from the source Observable within
- * periodic time intervals.
- *
- * <span class="informal">Samples the source Observable at periodic time
- * intervals, emitting what it samples.</span>
- *
- * ![](sampleTime.png)
- *
- * `sampleTime` periodically looks at the source Observable and emits whichever
- * value it has most recently emitted since the previous sampling, unless the
- * source has not emitted anything since the previous sampling. The sampling
- * happens periodically in time every `period` milliseconds (or the time unit
- * defined by the optional `scheduler` argument). The sampling starts as soon as
- * the output Observable is subscribed.
- *
- * ## Example
- * Every second, emit the most recent click at most once
- * ```javascript
- * import { fromEvent } from 'rxjs';
- * import { sampleTime } from 'rxjs/operators';
- *
- * const clicks = fromEvent(document, 'click');
- * const result = clicks.pipe(sampleTime(1000));
- * result.subscribe(x => console.log(x));
- * ```
- *
- * @see {@link auditTime}
- * @see {@link debounceTime}
- * @see {@link delay}
- * @see {@link sample}
- * @see {@link throttleTime}
- *
- * @param {number} period The sampling period expressed in milliseconds or the
- * time unit determined internally by the optional `scheduler`.
- * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for
- * managing the timers that handle the sampling.
- * @return {Observable<T>} An Observable that emits the results of sampling the
- * values emitted by the source Observable at the specified time interval.
- * @method sampleTime
- * @owner Observable
- */
-export function sampleTime<T>(period: number, scheduler: SchedulerLike = async): MonoTypeOperatorFunction<T> {
- return (source: Observable<T>) => source.lift(new SampleTimeOperator(period, scheduler));
-}
-
-class SampleTimeOperator<T> implements Operator<T, T> {
- constructor(private period: number,
- private scheduler: SchedulerLike) {
- }
-
- call(subscriber: Subscriber<T>, source: any): TeardownLogic {
- return source.subscribe(new SampleTimeSubscriber(subscriber, this.period, this.scheduler));
- }
-}
-
-/**
- * We need this JSDoc comment for affecting ESDoc.
- * @ignore
- * @extends {Ignored}
- */
-class SampleTimeSubscriber<T> extends Subscriber<T> {
- lastValue: T;
- hasValue: boolean = false;
-
- constructor(destination: Subscriber<T>,
- private period: number,
- private scheduler: SchedulerLike) {
- super(destination);
- this.add(scheduler.schedule(dispatchNotification, period, { subscriber: this, period }));
- }
-
- protected _next(value: T) {
- this.lastValue = value;
- this.hasValue = true;
- }
-
- notifyNext() {
- if (this.hasValue) {
- this.hasValue = false;
- this.destination.next(this.lastValue);
- }
- }
-}
-
-function dispatchNotification<T>(this: SchedulerAction<any>, state: any) {
- let { subscriber, period } = state;
- subscriber.notifyNext();
- this.schedule(state, period);
-}