/**
 * A strategy for posting messages to Mastodon.
 */
export class MastodonStrategy {
    /**
     * Creates a new instance.
     * @param {MastodonOptions} options Options for the instance.
     * @throws {Error} When options are missing.
     */
    constructor(options: MastodonOptions);
    /**
     * The ID of the strategy.
     * @type {string}
     * @readonly
     */
    readonly id: string;
    /**
     * The display name of the strategy.
     * @type {string}
     * @readonly
     */
    readonly name: string;
    /**
     * Maximum length of a Mastodon post in characters (default instance limit).
     * @type {number}
     * @const
     */
    MAX_MESSAGE_LENGTH: number;
    /**
     * Calculates the length of a message according to Mastodon's algorithm.
     * All characters, including URLs, are counted as their actual length.
     * @param {string} message The message to calculate the length of.
     * @returns {number} The calculated length of the message.
     */
    calculateMessageLength(message: string): number;
    /**
     * Posts a message to Mastodon.
     * @param {string} message The message to post.
     * @param {PostOptions} [postOptions] Additional options for the post.
     * @returns {Promise<Object>} A promise that resolves with the post data.
     */
    post(message: string, postOptions?: PostOptions): Promise<Object>;
    /**
     * Extracts a URL from a Mastodon API response.
     * @param {MastodonPostResponse} response The response from the Mastodon API post request.
     * @returns {string} The URL for the Mastodon post.
     */
    getUrlFromResponse(response: MastodonPostResponse): string;
    #private;
}
export type PostOptions = import("../types.js").PostOptions;
export type MastodonOptions = {
    /**
     * The access token for the Mastodon account.
     */
    accessToken: string;
    /**
     * The host for the Mastodon instance.
     */
    host: string;
};
export type MastodonErrorResponse = {
    /**
     * The error message returned by the Mastodon API.
     */
    error: string;
};
export type MastodonMediaSize = {
    /**
     * The width of the media.
     */
    width: number;
    /**
     * The height of the media.
     */
    height: number;
    /**
     * The size as string (e.g. "640x480").
     */
    size: string;
    /**
     * The aspect ratio.
     */
    aspect: number;
};
export type MastodonMediaFocus = {
    /**
     * The x coordinate of the focus point.
     */
    x: number;
    /**
     * The y coordinate of the focus point.
     */
    y: number;
};
export type MastodonMediaResponse = {
    /**
     * The unique identifier of the uploaded media
     */
    id: string;
    /**
     * The type of media (e.g. "image")
     */
    type: string;
    /**
     * The URL of the media
     */
    url: string | null;
    /**
     * The URL of the preview image
     */
    preview_url: string;
    /**
     * The remote URL of the media if applicable
     */
    remote_url: string | null;
    /**
     * The text URL of the media
     */
    text_url: string;
    /**
     * Metadata about the media
     */
    meta: {
        focus: MastodonMediaFocus;
        original: MastodonMediaSize;
        small: MastodonMediaSize;
    };
    /**
     * Alt text description of the media
     */
    description: string;
    /**
     * The blurhash string for the media
     */
    blurhash: string;
};
export type MastodonMediaAttachment = {
    /**
     * The unique identifier of the media attachment
     */
    id: string;
    /**
     * The type of media (e.g. "image")
     */
    type: string;
    /**
     * The URL of the full-size media
     */
    url: string | null;
    /**
     * The URL of the preview image
     */
    preview_url: string;
    /**
     * The remote URL of the media if hosted elsewhere
     */
    remote_url: string | null;
    /**
     * The text URL of the media
     */
    text_url: string | null;
    /**
     * Metadata about the media attachment
     */
    meta: Object;
    /**
     * Alt text description of the media
     */
    description: string;
    /**
     * The blurhash string for generating a placeholder
     */
    blurhash: string;
};
export type MastodonPostResponse = {
    /**
     * The unique identifier of the post.
     */
    id: string;
    /**
     * The URI of the post.
     */
    uri: string;
    /**
     * The URL of the post.
     */
    url: string;
    /**
     * The content of the post.
     */
    content: string;
};