/**
 * Decides whether comment editor content may be discarded, prompting the user
 * for confirmation when there is unsaved content and confirmation is enabled.
 *
 * Used by the comment composers (new comment, reply and edit) when they're
 * dismissed (e.g. by clicking outside or pressing Escape), so the user doesn't
 * silently lose text they've typed.
 *
 * @returns `true` when it's safe to discard (nothing unsaved, confirmation
 * disabled, or the user accepted the prompt), and `false` when the user
 * cancelled and the editor should stay open.
 */
export declare function confirmDiscardUnsavedComment(opts: {
    /**
     * Whether the editor(s) being dismissed currently hold unsaved content.
     */
    hasUnsavedContent: boolean;
    /**
     * Whether the confirmation prompt is enabled (see the `confirmBeforeDiscard`
     * option on the comments extension).
     */
    confirmBeforeDiscard: boolean;
    /**
     * The message shown in the confirmation prompt.
     */
    message: string;
    /**
     * The confirm implementation. Defaults to `window.confirm`; injectable for
     * testing.
     */
    confirm?: (message: string) => boolean;
}): boolean;