import { FeatureValueType } from './models/models';
import { ClientContext } from './client_context';
export interface FeatureListener {
    (featureChanged: FeatureStateHolder): void;
}
export interface FeatureStateHolder {
    getKey(): string | undefined;
    getString(): string | undefined;
    getBoolean(): boolean | undefined;
    getFlag(): boolean | undefined;
    getNumber(): number | undefined;
    getRawJson(): string | undefined;
    isSet(): boolean;
    isLocked(): boolean | undefined;
    isEnabled(): boolean;
    addListener(listener: FeatureListener): void;
    triggerListeners(feature?: FeatureStateHolder): void;
    getVersion(): number | undefined;
    getType(): FeatureValueType | undefined;
    withContext(param: ClientContext): FeatureStateHolder;
}