| 1 | import { EventEmitter, NgZone, ElementRef } from '@angular/core';
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| 2 | /**
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| 3 | * Visibility Observer
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| 4 | */
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| 5 | export declare class VisibilityObserver {
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| 6 | private element;
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| 7 | private zone;
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| 8 | visible: EventEmitter<any>;
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| 9 | timeout: any;
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| 10 | isVisible: boolean;
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| 11 | constructor(element: ElementRef, zone: NgZone);
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| 12 | destroy(): void;
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| 13 | onVisibilityChange(): void;
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| 14 | runCheck(): void;
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| 15 | }
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