how to pass hardcoding(static content) on typrescript interface with following code

I'm trying to pass Static content into NewsCarousel component this is PROPS of component

interface IProps {
    /** category of the news */
    title: string;
    /** an array of news articles to be rendered */
    articles?: NewsArticle.INewsArticle[];
    /** news category */
    category?: NewsGroup.INewsGroup;
    /** current cms control that will be rendered */
    control?: ICmsControl;
    /** If false, don't render the summary text, set via admin setting. */
    showSummary?: boolean;
    /** If news Feed is RSS news feed. */
    isRSS?: boolean;
}

News Article Interface can be use as in NewsCarousel component

export namespace NewsArticle {
    export const groupName = 'entities';
    export const itemKind = 'NewsDocument';

    export interface INewsArticle extends IStoreData {
        title: Value<string>;
        displayUrl: Value<string>;
        description: Value<string>;
        image: Value<string>;
        createdBy: Value<Profile.IProfile>;
        titleLink: Value<string>;
        openNewWindow: Value<boolean>;
        dateCreated: Value<DateTimeEx>;
        displayDate: Value<DateTimeEx>;
        feedType: Value<string>;
        newsBody: Value<string>;
        parentCategory?: Value<string>;
        folderDisplayUrl?: Value<string>;
        hash?: Value<string>;
        approved: Value<boolean>;
        permissionValue?: Value<number>;
    }

News Group Interface that can be use as in NewsCarousel component

export namespace NewsGroup {
    export const groupName = 'entities';
    export const itemKind = 'NewsGroup';

    export interface INewsGroup extends IStoreData {
        title: Value<string>;
        displayUrl: Value<string>;
        description: Value<string>;
        dateCreated: Value<DateTimeEx>;
        isRSS: Value<boolean>;
        active: Value<boolean>;
        isDefault: Value<boolean>;
        showMore: Value<boolean>;
        moreNewsText: Value<string>;
        showThumbnails: Value<boolean>;
        image: Value<string>;
        thumbnail: Value<string>;
        showSummary: Value<boolean>;
        showArchiveNews: Value<boolean>;
        subsiteEntityID: Value<string>;
        numOfNewsItems: Value<number>;
        children: ValueList<NewsArticle.INewsArticle>;
        rssChildren: ValueList<NewsArticle.INewsArticle>;
        permissionValue: Value<number>;
    }

I've tried way to pass it like below but didn't work, (ignore the extra const)

const date1 = new DateTimeEx('2016-10-01T15:05:00.000Z');
    const category = 'TECHNOLOGY';
    const imageUrl = 'https://lsdjlkasjd.com/wp-content/uploads/2016/12/1.png';
    const title = 'Headlines will look like this..';
    const url = '';
    const summary = 'Loreum ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor';
    const profileId = 'Someone';
    const itemKind = "entities"

<NewsCarousel
                    title={title}
                    category={'itemKind'}
                    title={userProvidedHeading.length ? userProvidedHeading : group.title.value}
                    showSummary={group.showSummary.value}
                    isRSS={isRss}
                />

I'm pretty not sure how to use/pass static content of Interface. Can anyone help me with this?