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;
    }

    /**
     * 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-active-appear',
     *  enter: 'my-enter',
     *  enterActive: 'my-active-enter',
     *  exit: 'my-exit',
     *  exitActive: 'my-active-exit',
     * }}
     * ```
     */
    interface CSSTransitionProps extends TransitionProps {
        classNames?: string | CSSTransitionClassNames;
    }
}

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

export = CSSTransition;