| 1 | import * as React from 'react';
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| 2 | import { InputEventListener, GenericMap, InputTargetElement, TargetElement, EventListeners } from '../types';
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| 3 | /**
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| 4 | * An IE11-compatible function.
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| 5 | *
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| 6 | * @see https://jsperf.com/suir-clone-map
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| 7 | */
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| 8 | export declare function cloneMap<T>(map: GenericMap<T>): GenericMap<T>;
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| 9 | export declare function normalizeHandlers(handlers: InputEventListener): EventListeners;
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| 10 | /**
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| 11 | * Asserts that the passed value is React.RefObject
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| 12 | *
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| 13 | * @see https://github.com/facebook/react/blob/v16.8.2/packages/react-reconciler/src/ReactFiberCommitWork.js#L665
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| 14 | */
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| 15 | export declare const isRefObject: <T>(ref: any) => ref is React.RefObject<T>;
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| 16 | /**
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| 17 | * Normalizes `target` for EventStack, because `target` can be passed as `boolean` or `string`.
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| 18 | *
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| 19 | * @see https://jsperf.com/suir-normalize-target
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| 20 | */
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| 21 | export declare function normalizeTarget(target: InputTargetElement): TargetElement;
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