import { ParameterConfig } from './ParameterConfig';
import type { ReactNativeFeatureFlagDecision } from '../client';
import type { DecisionReason } from './Decision';
/**
 * An object that contains the decided flag and the reason for the feature flag decision.
 */
export declare class FeatureFlagDecision implements ParameterConfig {
    isOn: boolean;
    reason: DecisionReason;
    config: ParameterConfig;
    constructor(isOn: boolean, reason: DecisionReason, config: ParameterConfig);
    static of(isOn: boolean, reason: DecisionReason, config?: ParameterConfig): FeatureFlagDecision;
    static withReactNativeFeatureFlagDecision(decision: ReactNativeFeatureFlagDecision): FeatureFlagDecision;
    static on(reason: DecisionReason, config?: ParameterConfig): FeatureFlagDecision;
    static off(reason: DecisionReason, config?: ParameterConfig): FeatureFlagDecision;
    getSync(key: string, defaultValue: string | number | boolean): string | number | boolean;
}