import { TodoistApi } from '@doist/todoist-sdk';
/** Value that tells `add-comments` to post without notifying anyone. */
export declare const NO_NOTIFY_KEYWORD = "none";
export type CommentTarget = {
    taskId: string;
    projectId?: never;
} | {
    projectId: string;
    taskId?: never;
};
/** Whether a `notifyUsers` list is the explicit "notify nobody" opt-out. */
export declare function isNoNotifyList(notifyUsers: string[]): boolean;
/**
 * Work out who Todoist's own clients would notify about a new comment.
 *
 * The API notifies exactly the people it is handed and derives nobody itself,
 * so a comment posted without recipients notifies no one — and, because a reply
 * takes its recipients from the comment before it, silences the next comment in
 * the thread too. Mirroring the clients here keeps that chain intact:
 *
 * - replying to an existing thread notifies the previous comment's participants
 * - the first comment on a task notifies its assignee, assigner and creator
 * - the first comment on a project notifies nobody, as a project has no assignee
 *
 * The comment's own author is never a recipient.
 *
 * @param client - Todoist API client
 * @param target - The task or project being commented on
 * @param currentUserId - The authenticated user, excluded from the result
 * @returns User IDs to notify, deduplicated
 */
export declare function getDefaultCommentRecipients(client: TodoistApi, target: CommentTarget, currentUserId: string): Promise<string[]>;
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