import { EditorState } from '@milkdown/kit/prose/state';
import { Ctx } from '@milkdown/kit/ctx';
import { EditorView } from '@milkdown/kit/prose/view';
import { MentionCandidate, MentionProvider } from '../core/types';
/** `@query` at line/block start; capture group is the query (may be empty). */
export declare const MENTION_TRIGGER: RegExp;
/** When caret is in `@query`, returns range to replace and the query text; otherwise null. */
export declare function findMentionTrigger(state: EditorState): {
    from: number;
    to: number;
    query: string;
} | null;
/** Replaces `@…` trigger range with a mention atom; ref id lives in `extra[refAttr]`. */
export declare function insertMentionInView(view: EditorView, from: number, to: number, candidate: MentionCandidate, provider: MentionProvider): boolean;
/** Same as `insertMentionInView` using the editor view from Milkdown ctx. */
export declare function insertMention(ctx: Ctx, from: number, to: number, candidate: MentionCandidate, provider: MentionProvider): void;