| 1 | /// <reference types="react" />
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| 2 | export declare function elementIsOrContains(element: HTMLElement, testElement: HTMLElement): boolean;
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| 3 | /**
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| 4 | * Throttle an event on an EventTarget by wrapping it in a
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| 5 | * `requestAnimationFrame` call. Returns the event handler that was bound to
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| 6 | * given eventName so you can clean up after yourself.
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| 7 | *
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| 8 | * @see https://developer.mozilla.org/en-US/docs/Web/Events/scroll
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| 9 | */
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| 10 | export declare function throttleEvent(target: EventTarget, eventName: string, newEventName: string): (event: Event) => void;
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| 11 | export interface IThrottledReactEventOptions {
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| 12 | preventDefault?: boolean;
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| 13 | }
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| 14 | /**
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| 15 | * Throttle a callback by wrapping it in a `requestAnimationFrame` call. Returns
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| 16 | * the throttled function.
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| 17 | *
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| 18 | * @see https://www.html5rocks.com/en/tutorials/speed/animations/
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| 19 | */
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| 20 | export declare function throttleReactEventCallback<E extends React.SyntheticEvent = React.SyntheticEvent>(callback: (event: E, ...otherArgs: any[]) => any, options?: IThrottledReactEventOptions): (event2: E) => void;
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| 21 | /**
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| 22 | * Throttle a method by wrapping it in a `requestAnimationFrame` call. Returns
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| 23 | * the throttled function.
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| 24 | */
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| 25 | export declare function throttle<T extends Function>(method: T): T;
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