react-hooks.d.ts

import * as React from "react";

declare module "react" {
    function useState<T>(initialState: T | (() => T)): [T, (newState: T) => void];
    function useEffect(
        create: () => void | (() => void),
        inputs?: ReadonlyArray<unknown>
    ): void;
    function useContext<T>(foo: React.Context<T>): T;
    function useReducer<S, A>(
        reducer: (state: S, action: A) => S,
        initialState: S
    ): [S, (action: A) => void];
    function useCallback<F extends (...args: never[]) => unknown>(
        callback: F,
        inputs?: ReadonlyArray<unknown>
    ): F;
    function useMemo<T>(create: () => T, inputs?: ReadonlyArray<unknown>): T;
    function useRef<T extends unknown>(initialValue?: T): React.RefObject<T>;
    function useImperativeMethods<T>(
        ref: React.Ref<T>,
        createInstance: () => T,
        inputs?: ReadonlyArray<unknown>
    ): void;
    const useMutationEffect: typeof useEffect;
    const useLayoutEffect: typeof useEffect;
}