import { Plugin, PluginKey } from 'prosemirror-state';
/** Live state of a trigger-character suggestion (mention or slash command). */
export interface SuggestionMatch {
    active: boolean;
    trigger: string;
    query: string;
    /** Doc range spanning trigger + query, to replace on selection. */
    from: number;
    to: number;
}
export declare const INACTIVE_SUGGESTION: SuggestionMatch;
export interface SuggestionOptions {
    /** Read live so trigger config can change without rebuilding state. */
    getTriggers: () => string[];
    /** Restrict to the start of an empty-ish textblock (slash commands). */
    startOfLine?: boolean;
    /** Stay inactive until the query reaches this length (emoji ":" noise). */
    minQueryLength?: number;
    /** Notified on every state change (including becoming inactive). */
    onChange: (match: SuggestionMatch) => void;
    /** Intercept keys (arrows/Enter/Escape) while a suggestion is active. */
    onKeyDown?: (event: KeyboardEvent, match: SuggestionMatch) => boolean;
}
/**
 * Generic trigger-character suggestion tracker. Recomputes the active
 * trigger/query from the selection on every transaction, notifies the host,
 * and softly highlights the query text. Insertion/UI is the host's job.
 */
export declare function suggestionPlugin(key: PluginKey, options: SuggestionOptions): Plugin;