export declare type Frontmatter = {
    title: string;
    description?: string;
    by?: string;
    publishedAt?: string;
    relatedIds?: string[];
    type?: 'changelog' | string;
    readingTime?: {
        text: string;
        minutes: number;
        time: number;
        words: number;
    };
    poster?: string;
    slug: string;
};