11 lines
873 B
TypeScript
11 lines
873 B
TypeScript
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import { Observable } from '../Observable';
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/**
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* Returns an Observable that emits all items emitted by the source Observable that are distinct by comparison from the previous item.
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* If a comparator function is provided, then it will be called for each item to test for whether or not that value should be emitted.
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* If a comparator function is not provided, an equality check is used by default.
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* @param {function} [compare] optional comparison function called to test if an item is distinct from the previous item in the source.
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* @returns {Observable} an Observable that emits items from the source Observable with distinct values.
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*/
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export declare function distinctUntilChanged<T>(compare?: (x: T, y: T) => boolean): Observable<T>;
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export declare function distinctUntilChanged<T, K>(compare: (x: K, y: K) => boolean, keySelector?: (x: T) => K): Observable<T>;
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