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Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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529 bytes
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| 1 | import { Observable } from '../Observable';
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| 2 | import { OperatorFunction } from '../../internal/types';
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| 3 | export declare function first<T, D = T>(predicate?: null, defaultValue?: D): OperatorFunction<T, T | D>;
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| 4 | export declare function first<T, S extends T>(predicate: (value: T, index: number, source: Observable<T>) => value is S, defaultValue?: S): OperatorFunction<T, S>;
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| 5 | export declare function first<T, D = T>(predicate: (value: T, index: number, source: Observable<T>) => boolean, defaultValue?: D): OperatorFunction<T, T | D>;
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