| 1 | import * as React from "react";
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| 2 | /**
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| 3 | * Returns true if `node` is null/undefined, false, empty string, or an array
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| 4 | * composed of those. If `node` is an array, only one level of the array is
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| 5 | * checked, for performance reasons.
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| 6 | */
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| 7 | export declare function isReactNodeEmpty(node?: React.ReactNode, skipArray?: boolean): boolean;
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| 8 | /**
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| 9 | * Converts a React node to an element. Non-empty strings, numbers, and Fragments will be wrapped in given tag name;
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| 10 | * empty strings and booleans will be discarded.
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| 11 | *
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| 12 | * @param child the React node to convert
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| 13 | * @param tagName the HTML tag name to use when a wrapper element is needed
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| 14 | * @param props additional props to spread onto the element, if any. If the child is a React element and this argument
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| 15 | * is defined, the child will be cloned and these props will be merged in.
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| 16 | */
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| 17 | export declare function ensureElement(child: React.ReactNode | undefined, tagName?: keyof React.JSX.IntrinsicElements, props?: React.HTMLProps<HTMLElement>): React.ReactElement<any, string | React.JSXElementConstructor<any>> | undefined;
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| 18 | export declare function isReactElement<T = any>(child: React.ReactNode): child is React.ReactElement<T>;
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| 19 | /**
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| 20 | * Returns true if the given JSX element matches the given component type.
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| 21 | *
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| 22 | * NOTE: This function only checks equality of `displayName` for performance and
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| 23 | * to tolerate multiple minor versions of a component being included in one
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| 24 | * application bundle.
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| 25 | *
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| 26 | * @param element JSX element in question
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| 27 | * @param ComponentType desired component type of element
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| 28 | */
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| 29 | export declare function isElementOfType<P = {}>(element: any, ComponentType: React.ComponentType<P>): element is React.ReactElement<P>;
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| 30 | export declare function isReact18OrHigher(): boolean;
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