import type { EvaluationContext, JsonValue, ResolutionDetails } from '@openfeature/server-sdk';
/**
 * IEvaluator is an interface that represents the evaluation of a feature flag.
 * It can have multiple implementations: Remote or InProcess.
 */
export interface IEvaluator {
    /**
     * Initialize the evaluator.
     */
    initialize(): Promise<void>;
    /**
     * Evaluates a boolean flag.
     * @param flagKey - The key of the flag to evaluate.
     * @param defaultValue - The default value to return if the flag is not found.
     * @param evaluationContext - The context in which to evaluate the flag.
     * @returns The resolution details of the flag evaluation.
     */
    evaluateBoolean(flagKey: string, defaultValue: boolean, evaluationContext?: EvaluationContext): Promise<ResolutionDetails<boolean>>;
    /**
     * Evaluates a string flag.
     * @param flagKey - The key of the flag to evaluate.
     * @param defaultValue - The default value to return if the flag is not found.
     * @param evaluationContext - The context in which to evaluate the flag.
     * @returns The resolution details of the flag evaluation.
     */
    evaluateString(flagKey: string, defaultValue: string, evaluationContext?: EvaluationContext): Promise<ResolutionDetails<string>>;
    /**
     * Evaluates a number flag.
     * @param flagKey - The key of the flag to evaluate.
     * @param defaultValue - The default value to return if the flag is not found.
     * @param evaluationContext - The context in which to evaluate the flag.
     * @returns The resolution details of the flag evaluation.
     */
    evaluateNumber(flagKey: string, defaultValue: number, evaluationContext?: EvaluationContext): Promise<ResolutionDetails<number>>;
    /**
     * Evaluates an object flag.
     * @param flagKey - The key of the flag to evaluate.
     * @param defaultValue - The default value to return if the flag is not found.
     * @param evaluationContext - The context in which to evaluate the flag.
     * @returns The resolution details of the flag evaluation.
     */
    evaluateObject<T extends JsonValue>(flagKey: string, defaultValue: T, evaluationContext?: EvaluationContext): Promise<ResolutionDetails<T>>;
    /**
     * Check if the flag is trackable.
     */
    isFlagTrackable(flagKey: string): boolean;
    /**
     * Dispose the evaluator.
     */
    dispose(): Promise<void>;
}