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@blueprintjs/core

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import * as React from "react"; /** * Returns true if `node` is null/undefined, false, empty string, or an array * composed of those. If `node` is an array, only one level of the array is * checked, for performance reasons. */ export declare function isReactNodeEmpty(node?: React.ReactNode, skipArray?: boolean): boolean; /** * Converts a React node to an element: non-empty string or number or * `React.Fragment` (React 16.3+) is wrapped in given tag name; empty strings * and booleans are discarded. */ export declare function ensureElement(child: React.ReactNode | undefined, tagName?: keyof JSX.IntrinsicElements): React.ReactElement<any, string | ((props: any) => React.ReactElement<any, string | any | (new (props: any) => React.Component<any, any, any>)> | null) | (new (props: any) => React.Component<any, any, any>)> | undefined; export declare function isReactElement<T = any>(child: React.ReactNode): child is React.ReactElement<T>; /** * Represents anything that has a `name` property such as Functions. */ export interface INamed { name?: string; } export declare function getDisplayName(ComponentClass: React.ComponentType | INamed): string; /** * Returns true if the given JSX element matches the given component type. * * NOTE: This function only checks equality of `displayName` for performance and * to tolerate multiple minor versions of a component being included in one * application bundle. * * @param element JSX element in question * @param ComponentType desired component type of element */ export declare function isElementOfType<P = {}>(element: any, ComponentType: React.ComponentType<P>): element is React.ReactElement<P>; /** * Returns React.createRef if it's available, or a ref-like object if not. */ export declare function createReactRef<T>(): React.RefObject<T>; /** * Replacement type for { polyfill } from "react-lifecycles-compat" useful in some places where * the correct type is not inferred automatically. This should be removed once Blueprint depends on React >= 16. * HACKHACK part of https://github.com/palantir/blueprint/issues/4342 */ export declare type LifecycleCompatPolyfill<P, T extends React.ComponentClass<P>> = (Comp: T) => T & { [K in keyof T]: T[K]; };