export type Deleter = () => void;
export type MessageInit = {};
export type MessageApi = {
    addListener: (onUpdateUserInfo: (params: {
        userId: string;
        userName?: string;
        userAvatar?: string;
    }) => void) => Deleter;
    getUserInfo: (userId: string) => {
        userName?: string;
        userAvatar?: string;
    } | undefined;
    dispatchUserInfo: (params: {
        userId: string;
        userName?: string;
        userAvatar?: string;
    }) => void;
};
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