custom.example.js

(() => {
/**
 * @typedef CustomWindow
 * @property {(movie: Movie) => boolean} [movieLibraryFilter]
 * @property {(movieA: Movie, movieB: Movie) => number} [movieLibrarySort]
 */

/**
 * @typedef Movie
 * @property {string} title
 * @property {string} titleSortStr
 * @property {string} setName
 * @property {string} setNameSortStr
 * @property {string} year
 * @property {string} premiereDateISOStr
 * @property {string} plot
 * @property {string} tagline
 * @property {string} rating
 * @property {string[]} genres
 * @property {string[]} directorNames
 * @property {string[]} actorNames
 * @property {boolean} hasSubtitles
 * @property {number} runtimeMinutes
 * @property {string} thumbURL
 * @property {string} logoURL
 * @property {string} keyartURL
 * @property {string} videoFilepath
 */

/** @type {CustomWindow} */
const cwindow = {
  movieLibraryFilter: (movie) => ['Rated G', 'Rated PG'].includes(movie.rating),
  // Sort movies in sets by release date.
  movieLibrarySort: (a, b) => (
    a.setName === b.setName
    ? a.premiereDateISOStr.localeCompare(b.premiereDateISOStr)
    : (a.setNameSortStr || a.titleSortStr).localeCompare(b.setNameSortStr || b.titleSortStr)
  )
};

Object.assign(window, cwindow);
})();