import { MemoryService } from '../base/memoryService';
import { Service } from '../base/service';
export interface TextService extends Service {
    readonly text: string;
    setText(text: string): void;
}
export declare const NULL_TEXT_SERVICE: TextService;
export declare function createMemoryTextService(text?: string): TextService;
export declare class MemoryTextService extends MemoryService<string> implements TextService {
    get text(): string;
    setText(text: string): void;
}