defineArticle({
  // will resolve to ISO 8601 format
  datePublished: new Date(2020, 10, 1)
})

defineArticle({
  // will be resolved as ['Article', 'TechArticle']
  '@type': 'TechArticle',
})

defineArticle({
  headline: 'Article Title',
  image: '/articles/article-title-image.jpg',
  // using identity as the author
})

defineArticle()

defineArticle({
  headline: 'Article Title',
  description: 'Article description',
  image: '/articles/article-title-image.jpg',
  datePublished: new Date(2020, 19, 1),
  dateModified: new Date(2020, 19, 1),
  // attaching an author when the identity is an organization
  author: {
    name: 'Harlan Wilton',
    url: 'https://harlanzw.com',
  }
})

type ValidArticleSubTypes = 'Article' | 'AdvertiserContentArticle' | 'NewsArticle' | 'Report' | 'SatiricalArticle' | 'ScholarlyArticle' | 'SocialMediaPosting' | 'TechArticle'
export interface ArticleSimple extends Thing {
  ['@type']?: Arrayable<ValidArticleSubTypes>
  /**
   * The headline of the article (falling back to the title of the WebPage).
   * Headlines should not exceed 110 characters.
   */
  headline?: string
  /**
   * A summary of the article (falling back to the page's meta description content).
   */
  description?: string
  /**
   * A reference-by-ID to the WebPage node.
   */
  isPartOf?: IdReference
  /**
   * The time at which the article was originally published, in ISO 8601 format; e.g., 2015-10-31T16:10:29+00:00.
   */
  datePublished?: ResolvableDate
  /**
   * The time at which the article was last modified, in ISO 8601 format; e.g., 2015-10-31T16:10:29+00:00.
   */
  dateModified?: ResolvableDate
  /**
   * A reference-by-ID to the author of the article.
   */
  author?: NodeRelations<Identity>
  /**
   * A reference-by-ID to the publisher of the article.
   */
  publisher?: NodeRelations<Identity>
  /**
   * An array of all videos in the article content, referenced by ID.
   */
  video?: NodeRelations<VideoObject>
  /**
   * An image object or referenced by ID.
   * - Must be at least 696 pixels wide.
   * - Must be of the following formats+file extensions: .jpg, .png, .gif ,or .webp.
   *
   * Must have markup of it somewhere on the page.
   */
  image?: NodeRelations<ImageObject | string>
  /**
   * An array of references by ID to comment pieces.
   */
  comment?: NodeRelations<Comment>
  /**
   * A thumbnail image relevant to the Article.
   */
  thumbnailUrl?: string
  /**
   * An integer value of the number of comments associated with the article.
   */
  commentCount?: number
  /**
   * An integer value of the number of words in the article.
   */
  wordCount?: number
  /**
   * An array of keywords which the article has (e.g., ["cats","dogs","cake"]).
   */
  keywords?: string[]
  /**
   * An array of category names which the article belongs to (e.g., ["cats","dogs","cake"]).
   */
  articleSection?: string[]
  /**
   * The language code for the article; e.g., en-GB.
   */
  inLanguage?: string
  /**
   * A SpeakableSpecification object which identifies any content elements suitable for spoken results.
   */
  speakable?: unknown
  /**
   * The year from which the article holds copyright status.
   */
  copyrightYear?: string
  /**
   * A reference-by-ID to the Organization or Person who holds the copyright.
   */
  copyrightHolder?: NodeRelations<Identity>
}