import type { ThreadContextType } from '@pantheon-systems/css-client';
export interface UsePostCommentOptions {
    contextType: ThreadContextType;
    contextId: string;
    /** The thread to add to. Absent starts one on the context. */
    threadId?: string;
}
export interface PostCommentState {
    /**
     * Sends the comment and resolves to whether it landed. Absent where there is no
     * editor to send it through.
     */
    post?: (body: string) => Promise<boolean>;
    posting: boolean;
    failed: boolean;
}
/**
 * Posts a comment on one context and writes it back where it is already shown: the
 * thread it lands in goes into the page's loaded listing, so the trigger's count moves,
 * and the comment goes into the open thread, so it appears without another fetch.
 *
 * A comment on a resolved thread reopens it, so a known thread is always posted to
 * directly; only a context with no thread yet starts one.
 */
export declare function usePostComment({ contextType, contextId, threadId }: UsePostCommentOptions): PostCommentState;