export declare class SpellCheckerError { interval: { start: number; length: number; }; suggestions: string[]; } export declare class SpellCheckerSettings { isEnabled: boolean; customDictionaryGuid: string; canAddWord: boolean; suggestionCount: number; maxRequestLength: number; checkWordSpelling?: (word: string, callback: (isCorrect: boolean, suggestions: string[]) => void) => void; addWordToDictionary?: (word: string) => void; copyFrom(obj: SpellCheckerSettings): void; clone(): SpellCheckerSettings; }