Add explicit undefineds to types

Author: wooorm

lib/types.js

@@ -3,9 +3,9 @@
  *   An author object
  * @property {string} name
  *   Example: `'Acme, Inc.'` or `'Jane Doe'`
- * @property {string} [email]
+ * @property {string|undefined} [email]
  *   Example: `[email protected]`
- * @property {string} [url]
+ * @property {string|undefined} [url]
  *   Example: `'https://example.org/john'`.
  *   `url` is used in `atom`, not in `rss`.
  *
@@ -26,57 +26,57 @@
  * @property {string} url
  *   Full URL to the site (required, example:
  *   `'https://www.theguardian.com/world/zimbabwe'`).
- * @property {string} [feedUrl]
+ * @property {string|undefined} [feedUrl]
  *   Full URL to this channel (example:
  *   `'https://www.adweek.com/feed/'`).
  *   Make sure to pass different ones to `rss` and `atom`!
  *   You *should* define this.
- * @property {string} [description]
+ * @property {string|undefined} [description]
  *   Short description of the channel (example: `Album Reviews`).
  *   You *should* define this.
- * @property {string} [lang]
+ * @property {string|undefined} [lang]
  *   BCP 47 language tag representing the language of the whole channel (example:
  *   `'fr-BE'`).
  *   You *should* define this.
- * @property {string|Author} [author] Optional author of the whole channel.
+ * @property {string|Author|undefined} [author] Optional author of the whole channel.
  *   Either `string`, in which case it’s as passing `{name: string}`.
  *   Or an author object.
- * @property {Array<string>} [tags] Categories of the channel (example:
+ * @property {Array<string>|undefined} [tags] Categories of the channel (example:
  *   `['JavaScript', 'React']`).
  *
  * @typedef Entry
  *   Data on a single item.
- * @property {string} [title]
+ * @property {string|undefined} [title]
  *   Title of the item (example: `'Playboi Carti: Whole Lotta Red'`).
  *   Either `title`, `description`, or `descriptionHtml` must be set.
- * @property {string} [description]
+ * @property {string|undefined} [description]
  *   Either the whole post or an excerpt of it (example: `'Lorem'`).
  *   Should be plain text.
  *   `descriptionHtml` is preferred over plain text `description`.
  *   Either `title`, `description`, or `descriptionHtml` must be set.
- * @property {string} [descriptionHtml]
+ * @property {string|undefined} [descriptionHtml]
  *   Either the whole post or an excerpt of it (example: `'<p>Lorem</p>'`).
  *   Should be serialized HTML.
  *   `descriptionHtml` is preferred over plain text `description`.
  *   Either `title`, `description`, or `descriptionHtml` must be set.
- * @property {string|Author} [author]
+ * @property {string|Author|undefined} [author]
  *   Entry version of `channel.author`.
  *   You *should* define this.
  *   For `atom`, it is required to either set `channel.author` or set `author`
  *   on all entries.
- * @property {string} [url]
+ * @property {string|undefined} [url]
  *   Full URL of this entry on the *site* (example:
  *   `'https://pitchfork.com/reviews/albums/roberta-flack-first-take'`).
- * @property {Date|number|string} [published]
+ * @property {Date|number|string|undefined} [published]
  *   When the entry was first published (`Date` or value for `new Date(x)`,
  *   optional).
- * @property {Date|number|string} [modified]
+ * @property {Date|number|string|undefined} [modified]
  *   When the entry was last modified (`Date` or value for `new Date(x)`,
  *   optional).
- * @property {Array<string>} [tags]
+ * @property {Array<string>|undefined} [tags]
  *   Categories of the entry (`Array<string>?`, example:
  *   `['laravel', 'debugging']`).
- * @property {Enclosure} [enclosure]
+ * @property {Enclosure|undefined} [enclosure]
  *   Attached media.
  */