DefinitelyTyped/types/react-transition-group/CSSTransition.d.ts

import { Component } from "react";
import { TransitionProps } from "./Transition";

declare namespace CSSTransition {
    interface CSSTransitionClassNames {
        appear?: string;
        appearActive?: string;
        appearDone?: string;
        enter?: string;
        enterActive?: string;
        enterDone?: string;
        exit?: string;
        exitActive?: string;
        exitDone?: string;
    }

    interface CSSTransitionProps extends TransitionProps {
        /**
         * The animation `classNames` applied to the component as it enters or exits.
         * A single name can be provided and it will be suffixed for each stage: e.g.
         *
         * `classNames="fade"` applies `fade-enter`, `fade-enter-active`,
         * `fade-exit`, `fade-exit-active`, `fade-appear`, and `fade-appear-active`.
         *
         * Each individual classNames can also be specified independently like:
         *
         * ```js
         * classNames={{
         *   appear: 'my-appear',
         *   appearActive: 'my-appear-active',
         *   appearDone: 'my-appear-done',
         *   enter: 'my-enter',
         *   enterActive: 'my-enter-active',
         *   enterDone: 'my-enter-done',
         *   exit: 'my-exit',
         *   exitActive: 'my-exit-active',
         *   exitDone: 'my-exit-done'
         * }}
         * ```
         */
        classNames?: string | CSSTransitionClassNames;
    }
}

declare class CSSTransition extends Component<CSSTransition.CSSTransitionProps> {}

export = CSSTransition;