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diff --git a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/mergeMap.ts b/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/mergeMap.ts
deleted file mode 100644
index 3414fe4af3..0000000000
--- a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/mergeMap.ts
+++ /dev/null
@@ -1,175 +0,0 @@
-import { Observable } from '../Observable';
-import { Operator } from '../Operator';
-import { Subscriber } from '../Subscriber';
-import { Subscription } from '../Subscription';
-import { subscribeToResult } from '../util/subscribeToResult';
-import { OuterSubscriber } from '../OuterSubscriber';
-import { InnerSubscriber } from '../InnerSubscriber';
-import { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';
-import { map } from './map';
-import { from } from '../observable/from';
-
-/* tslint:disable:max-line-length */
-export function mergeMap<T, O extends ObservableInput<any>>(project: (value: T, index: number) => O, concurrent?: number): OperatorFunction<T, ObservedValueOf<O>>;
-/** @deprecated resultSelector no longer supported, use inner map instead */
-export function mergeMap<T, O extends ObservableInput<any>>(project: (value: T, index: number) => O, resultSelector: undefined, concurrent?: number): OperatorFunction<T, ObservedValueOf<O>>;
-/** @deprecated resultSelector no longer supported, use inner map instead */
-export function mergeMap<T, R, O extends ObservableInput<any>>(project: (value: T, index: number) => O, resultSelector: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R, concurrent?: number): OperatorFunction<T, R>;
-/* tslint:enable:max-line-length */
-
-/**
- * Projects each source value to an Observable which is merged in the output
- * Observable.
- *
- * <span class="informal">Maps each value to an Observable, then flattens all of
- * these inner Observables using {@link mergeAll}.</span>
- *
- * ![](mergeMap.png)
- *
- * Returns an Observable that emits items based on applying a function that you
- * supply to each item emitted by the source Observable, where that function
- * returns an Observable, and then merging those resulting Observables and
- * emitting the results of this merger.
- *
- * ## Example
- * Map and flatten each letter to an Observable ticking every 1 second
- * ```javascript
- * import { of, interval } from 'rxjs';
- * import { mergeMap, map } from 'rxjs/operators';
- *
- * const letters = of('a', 'b', 'c');
- * const result = letters.pipe(
- *   mergeMap(x => interval(1000).pipe(map(i => x+i))),
- * );
- * result.subscribe(x => console.log(x));
- *
- * // Results in the following:
- * // a0
- * // b0
- * // c0
- * // a1
- * // b1
- * // c1
- * // continues to list a,b,c with respective ascending integers
- * ```
- *
- * @see {@link concatMap}
- * @see {@link exhaustMap}
- * @see {@link merge}
- * @see {@link mergeAll}
- * @see {@link mergeMapTo}
- * @see {@link mergeScan}
- * @see {@link switchMap}
- *
- * @param {function(value: T, ?index: number): ObservableInput} project A function
- * that, when applied to an item emitted by the source Observable, returns an
- * Observable.
- * @param {number} [concurrent=Number.POSITIVE_INFINITY] Maximum number of input
- * Observables being subscribed to concurrently.
- * @return {Observable} An Observable that emits the result of applying the
- * projection function (and the optional deprecated `resultSelector`) to each item
- * emitted by the source Observable and merging the results of the Observables
- * obtained from this transformation.
- * @method mergeMap
- * @owner Observable
- */
-export function mergeMap<T, R, O extends ObservableInput<any>>(
-  project: (value: T, index: number) => O,
-  resultSelector?: ((outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R) | number,
-  concurrent: number = Number.POSITIVE_INFINITY
-): OperatorFunction<T, ObservedValueOf<O>|R> {
-  if (typeof resultSelector === 'function') {
-    // DEPRECATED PATH
-    return (source: Observable<T>) => source.pipe(
-      mergeMap((a, i) => from(project(a, i)).pipe(
-        map((b: any, ii: number) => resultSelector(a, b, i, ii)),
-      ), concurrent)
-    );
-  } else if (typeof resultSelector === 'number') {
-    concurrent = resultSelector;
-  }
-  return (source: Observable<T>) => source.lift(new MergeMapOperator(project, concurrent));
-}
-
-export class MergeMapOperator<T, R> implements Operator<T, R> {
-  constructor(private project: (value: T, index: number) => ObservableInput<R>,
-              private concurrent: number = Number.POSITIVE_INFINITY) {
-  }
-
-  call(observer: Subscriber<R>, source: any): any {
-    return source.subscribe(new MergeMapSubscriber(
-      observer, this.project, this.concurrent
-    ));
-  }
-}
-
-/**
- * We need this JSDoc comment for affecting ESDoc.
- * @ignore
- * @extends {Ignored}
- */
-export class MergeMapSubscriber<T, R> extends OuterSubscriber<T, R> {
-  private hasCompleted: boolean = false;
-  private buffer: T[] = [];
-  private active: number = 0;
-  protected index: number = 0;
-
-  constructor(destination: Subscriber<R>,
-              private project: (value: T, index: number) => ObservableInput<R>,
-              private concurrent: number = Number.POSITIVE_INFINITY) {
-    super(destination);
-  }
-
-  protected _next(value: T): void {
-    if (this.active < this.concurrent) {
-      this._tryNext(value);
-    } else {
-      this.buffer.push(value);
-    }
-  }
-
-  protected _tryNext(value: T) {
-    let result: ObservableInput<R>;
-    const index = this.index++;
-    try {
-      result = this.project(value, index);
-    } catch (err) {
-      this.destination.error(err);
-      return;
-    }
-    this.active++;
-    this._innerSub(result, value, index);
-  }
-
-  private _innerSub(ish: ObservableInput<R>, value: T, index: number): void {
-    const innerSubscriber = new InnerSubscriber(this, undefined, undefined);
-    const destination = this.destination as Subscription;
-    destination.add(innerSubscriber);
-    subscribeToResult<T, R>(this, ish, value, index, innerSubscriber);
-  }
-
-  protected _complete(): void {
-    this.hasCompleted = true;
-    if (this.active === 0 && this.buffer.length === 0) {
-      this.destination.complete();
-    }
-    this.unsubscribe();
-  }
-
-  notifyNext(outerValue: T, innerValue: R,
-             outerIndex: number, innerIndex: number,
-             innerSub: InnerSubscriber<T, R>): void {
-    this.destination.next(innerValue);
-  }
-
-  notifyComplete(innerSub: Subscription): void {
-    const buffer = this.buffer;
-    this.remove(innerSub);
-    this.active--;
-    if (buffer.length > 0) {
-      this._next(buffer.shift());
-    } else if (this.active === 0 && this.hasCompleted) {
-      this.destination.complete();
-    }
-  }
-}