import { DynamicValue, Listener, Unsubscriber } from "./DynamicValue";
/**
 * A [[DynamicValue]] that holds a constant `string` value
 */
export declare class TextValue implements DynamicValue<string> {
    __variant__: string;
    text: string;
    name: string | void;
    constructor(text: string, name?: string);
    onValue(listener: Listener<string>): Unsubscriber;
    getValue(): Promise<string>;
    static fromJSON(json: {
        text: string;
        name?: string;
    }): TextValue;
}