import { type Plugin as SlatePlugin } from 'slate-react';
import { type SuggestionsState, type TypeaheadInput, type TypeaheadOutput } from '../types/completion';
export declare function SuggestionsPlugin({ onTypeahead, cleanText, onWillApplySuggestion, portalOrigin, }: {
    onTypeahead?: (typeahead: TypeaheadInput) => Promise<TypeaheadOutput>;
    cleanText?: (text: string) => string;
    onWillApplySuggestion?: (suggestion: string, state: SuggestionsState) => string;
    portalOrigin: string;
}): SlatePlugin;
export declare function getNumCharsToDelete(suggestionText: string, typeaheadPrefix: string, typeaheadText: string, preserveSuffix: boolean, deleteBackwards?: number, cleanText?: (text: string) => string): {
    forward: number;
    backward: number;
};