import type { LaunchChangeEntry, LaunchChangeHistoryResponse } from './types.js';
export declare function setLaunchBaseUrl(url: string): void;
export declare function selectLaunchBaseUrl(staging: boolean): string;
export declare function applyLaunchBaseUrl(staging: boolean): void;
export declare function __setSleepForTests(fn: (ms: number) => Promise<void>): void;
export declare function __resetSleepForTests(): void;
export declare function fetchEnvironments(apiKey: string): Promise<Record<string, string>>;
export declare function fetchChangeHistoryPage(apiKey: string, cursor?: string): Promise<LaunchChangeHistoryResponse>;
export declare function fetchAllChangeHistory(apiKey: string, sinceEpochMs?: number, onProgress?: (fetched: number) => void): Promise<LaunchChangeEntry[]>;