refactor(/internal): remove unused imports

src/internal/observable/forkJoin.ts

@@ -109,7 +109,7 @@ export function forkJoin<T>(...sources: ObservableInput<T>[]): Observable<T[]>;
  *
  * ### Use forkJoin with project function
  * ```javascript
- * import { jorkJoin, interval } from 'rxjs';
+ * import { forkJoin, interval } from 'rxjs';
  * import { take } from 'rxjs/operators';
  *
  * const observable = forkJoin(

src/internal/operators/elementAt.ts

@@ -1,8 +1,6 @@
-import { Operator } from '../Operator';
-import { Subscriber } from '../Subscriber';
 import { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';
 import { Observable } from '../Observable';
-import { MonoTypeOperatorFunction, TeardownLogic } from '../types';
+import { MonoTypeOperatorFunction } from '../types';
 import { filter } from './filter';
 import { throwIfEmpty } from './throwIfEmpty';
 import { defaultIfEmpty } from './defaultIfEmpty';

src/internal/operators/first.ts

@@ -1,6 +1,4 @@
 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';

src/internal/operators/last.ts

@@ -1,6 +1,4 @@
 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';

src/internal/operators/switchMapTo.ts

@@ -1,10 +1,4 @@
-import { Operator } from '../Operator';
 import { Observable } from '../Observable';
-import { Subscriber } from '../Subscriber';
-import { Subscription } from '../Subscription';
-import { OuterSubscriber } from '../OuterSubscriber';
-import { InnerSubscriber } from '../InnerSubscriber';
-import { subscribeToResult } from '../util/subscribeToResult';
 import { ObservableInput, OperatorFunction } from '../types';
 import { switchMap } from './switchMap';
 

src/internal/operators/throwIfEmpty.ts

@@ -1,6 +1,5 @@
 import { tap } from './tap';
 import { EmptyError } from '../util/EmptyError';
-import { MonoTypeOperatorFunction } from '../types';
 
 /**
  * If the source observable completes without emitting a value, it will emit

src/internal/operators/timeout.ts

@@ -1,10 +1,7 @@
 import { async } from '../scheduler/async';
-import { isDate } from '../util/isDate';
-import { Operator } from '../Operator';
-import { Subscriber } from '../Subscriber';
 import { Observable } from '../Observable';
 import { TimeoutError } from '../util/TimeoutError';
-import { MonoTypeOperatorFunction, SchedulerAction, SchedulerLike, TeardownLogic } from '../types';
+import { MonoTypeOperatorFunction, SchedulerLike } from '../types';
 import { timeoutWith } from './timeoutWith';
 import { throwError } from '../observable/throwError';
 

src/internal/operators/timeoutWith.ts

@@ -5,7 +5,7 @@ import { Observable } from '../Observable';
 import { isDate } from '../util/isDate';
 import { OuterSubscriber } from '../OuterSubscriber';
 import { subscribeToResult } from '../util/subscribeToResult';
-import { ObservableInput, OperatorFunction, MonoTypeOperatorFunction, SchedulerAction, SchedulerLike, TeardownLogic } from '../types';
+import { ObservableInput, OperatorFunction, SchedulerAction, SchedulerLike, TeardownLogic } from '../types';
 
 /* tslint:disable:max-line-length */
 export function timeoutWith<T, R>(due: number | Date, withObservable: ObservableInput<R>, scheduler?: SchedulerLike): OperatorFunction<T, T | R>;

src/internal/symbol/observable.ts

@@ -1,5 +1,3 @@
-import { root } from '../util/root';
-
 /** Symbol.observable addition */
 /* Note: This will add Symbol.observable globally for all TypeScript users,
   however, we are no longer polyfilling Symbol.observable */

src/internal/util/isObservable.ts

@@ -1,5 +1,4 @@
 import { Observable } from '../Observable';
-import { ObservableInput } from '../types';
 
 /**
  * Tests to see if the object is an RxJS {@link Observable}

src/internal/util/subscribeToResult.ts

@@ -1,4 +1,3 @@
-import { ObservableInput } from '../types';
 import { Subscription } from '../Subscription';
 import { InnerSubscriber } from '../InnerSubscriber';
 import { OuterSubscriber } from '../OuterSubscriber';