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diff --git a/node_modules/rxjs/src/internal/operators/timestamp.ts b/node_modules/rxjs/src/internal/operators/timestamp.ts
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-import { OperatorFunction, TimestampProvider, Timestamp } from '../types';
-import { dateTimestampProvider } from '../scheduler/dateTimestampProvider';
-import { map } from './map';
-
-/**
- * Attaches a timestamp to each item emitted by an observable indicating when it was emitted
- *
- * The `timestamp` operator maps the *source* observable stream to an object of type
- * `{value: T, timestamp: R}`. The properties are generically typed. The `value` property contains the value
- * and type of the *source* observable. The `timestamp` is generated by the schedulers `now` function. By
- * default, it uses the `asyncScheduler` which simply returns `Date.now()` (milliseconds since 1970/01/01
- * 00:00:00:000) and therefore is of type `number`.
- *
- * ![](timestamp.png)
- *
- * ## Example
- *
- * In this example there is a timestamp attached to the document's click events
- *
- * ```ts
- * import { fromEvent, timestamp } from 'rxjs';
- *
- * const clickWithTimestamp = fromEvent(document, 'click').pipe(
- * timestamp()
- * );
- *
- * // Emits data of type { value: PointerEvent, timestamp: number }
- * clickWithTimestamp.subscribe(data => {
- * console.log(data);
- * });
- * ```
- *
- * @param timestampProvider An object with a `now()` method used to get the current timestamp.
- * @return A function that returns an Observable that attaches a timestamp to
- * each item emitted by the source Observable indicating when it was emitted.
- */
-export function timestamp<T>(timestampProvider: TimestampProvider = dateTimestampProvider): OperatorFunction<T, Timestamp<T>> {
- return map((value: T) => ({ value, timestamp: timestampProvider.now() }));
-}
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