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diff --git a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/first.ts b/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/first.ts
deleted file mode 100644
index eb8808152c..0000000000
--- a/tools/node_modules/eslint/node_modules/rxjs/src/internal/operators/first.ts
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-import { Observable } from '../Observable';
-import { Operator } from '../Operator';
-import { Subscriber } from '../Subscriber';
-import { EmptyError } from '../util/EmptyError';
-import { OperatorFunction } from '../../internal/types';
-import { filter } from './filter';
-import { take } from './take';
-import { defaultIfEmpty } from './defaultIfEmpty';
-import { throwIfEmpty } from './throwIfEmpty';
-import { identity } from '../util/identity';
-
-/* tslint:disable:max-line-length */
-export function first<T, D = T>(
-  predicate?: null,
-  defaultValue?: D
-): OperatorFunction<T, T | D>;
-export function first<T, S extends T>(
-  predicate: (value: T, index: number, source: Observable<T>) => value is S,
-  defaultValue?: S
-): OperatorFunction<T, S>;
-export function first<T, D = T>(
-  predicate: (value: T, index: number, source: Observable<T>) => boolean,
-  defaultValue?: D
-): OperatorFunction<T, T | D>;
-/* tslint:enable:max-line-length */
-
-/**
- * Emits only the first value (or the first value that meets some condition)
- * emitted by the source Observable.
- *
- * <span class="informal">Emits only the first value. Or emits only the first
- * value that passes some test.</span>
- *
- * ![](first.png)
- *
- * If called with no arguments, `first` emits the first value of the source
- * Observable, then completes. If called with a `predicate` function, `first`
- * emits the first value of the source that matches the specified condition. It
- * may also take a deprecated `resultSelector` function to produce the output
- * value from the input value, and a `defaultValue` to emit in case the source
- * completes before it is able to emit a valid value. Throws an error if
- * `defaultValue` was not provided and a matching element is not found.
- *
- * ## Examples
- * Emit only the first click that happens on the DOM
- * ```javascript
- * import { fromEvent } from 'rxjs';
- * import { first } from 'rxjs/operators';
- *
- * const clicks = fromEvent(document, 'click');
- * const result = clicks.pipe(first());
- * result.subscribe(x => console.log(x));
- * ```
- *
- * Emits the first click that happens on a DIV
- * ```javascript
- * import { fromEvent } from 'rxjs';
- * import { first } from 'rxjs/operators';
- *
- * const clicks = fromEvent(document, 'click');
- * const result = clicks.pipe(first(ev => ev.target.tagName === 'DIV'));
- * result.subscribe(x => console.log(x));
- * ```
- *
- * @see {@link filter}
- * @see {@link find}
- * @see {@link take}
- *
- * @throws {EmptyError} Delivers an EmptyError to the Observer's `error`
- * callback if the Observable completes before any `next` notification was sent.
- *
- * @param {function(value: T, index: number, source: Observable<T>): boolean} [predicate]
- * An optional function called with each item to test for condition matching.
- * @param {R} [defaultValue] The default value emitted in case no valid value
- * was found on the source.
- * @return {Observable<T|R>} An Observable of the first item that matches the
- * condition.
- * @method first
- * @owner Observable
- */
-export function first<T, D>(
-  predicate?: ((value: T, index: number, source: Observable<T>) => boolean) | null,
-  defaultValue?: D
-): OperatorFunction<T, T | D> {
-  const hasDefaultValue = arguments.length >= 2;
-  return (source: Observable<T>) => source.pipe(
-    predicate ? filter((v, i) => predicate(v, i, source)) : identity,
-    take(1),
-    hasDefaultValue ? defaultIfEmpty<T | D>(defaultValue) : throwIfEmpty(() => new EmptyError()),
-  );
-}