/**
 * @octomil/browser — Federated analytics client
 *
 * Provides cross-site statistical analyses (descriptive stats, t-tests,
 * chi-square, ANOVA) and query history for federation members.
 *
 * Matches the cross-platform SDK interface.
 */
import type { AnalyticsFilter, DescriptiveResult, TTestResult, ChiSquareResult, AnovaResult, AnalyticsQuery, AnalyticsQueryListResponse } from "./types.js";
export interface FederatedAnalyticsOptions {
    /** Base URL of the Octomil server. */
    serverUrl: string;
    /** Optional API key for authenticated requests. */
    apiKey?: string;
}
export interface DescriptiveOptions {
    variable: string;
    groupBy?: string;
    groupIds?: string[];
    includePercentiles?: boolean;
    filters?: AnalyticsFilter;
}
export interface TTestOptions {
    variable: string;
    groupA: string;
    groupB: string;
    confidenceLevel?: number;
    filters?: AnalyticsFilter;
}
export interface ChiSquareOptions {
    variable1: string;
    variable2: string;
    groupIds?: string[];
    confidenceLevel?: number;
    filters?: AnalyticsFilter;
}
export interface AnovaOptions {
    variable: string;
    groupBy?: string;
    groupIds?: string[];
    confidenceLevel?: number;
    postHoc?: boolean;
    filters?: AnalyticsFilter;
}
export declare class FederatedAnalyticsClient {
    private readonly serverUrl;
    private readonly apiKey?;
    constructor(options: FederatedAnalyticsOptions);
    /** Run descriptive statistics across groups in the federation. */
    descriptive(options: DescriptiveOptions): Promise<DescriptiveResult>;
    /** Run a two-sample t-test between two groups. */
    tTest(options: TTestOptions): Promise<TTestResult>;
    /** Run a chi-square test of independence. */
    chiSquare(options: ChiSquareOptions): Promise<ChiSquareResult>;
    /** Run a one-way ANOVA test across groups. */
    anova(options: AnovaOptions): Promise<AnovaResult>;
    /** List past analytics queries. */
    listQueries(limit?: number, offset?: number): Promise<AnalyticsQueryListResponse>;
    /** Get a specific analytics query by ID. */
    getQuery(queryId: string): Promise<AnalyticsQuery>;
    private buildHeaders;
    private post;
    private get;
}
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