/**
 * Preview environment detection and branch token resolution
 *
 * Automatically detects preview/CI environments and resolves the appropriate
 * Tinybird branch token for the current git branch.
 */
/**
 * Detect if we're running in a preview/CI environment
 */
export declare function isPreviewEnvironment(): boolean;
/**
 * Get the current git branch name from environment variables
 * Supports various CI platforms
 */
export declare function getPreviewBranchName(): string | null;
/**
 * Resolve the token to use for API calls
 *
 * Priority:
 * 1. Explicit TINYBIRD_BRANCH_TOKEN env var
 * 2. In preview environment: fetch branch token using workspace token
 * 3. Fall back to TINYBIRD_TOKEN
 *
 * @param options - Optional configuration overrides
 * @returns The resolved token to use
 */
export declare function resolveToken(options?: {
    baseUrl?: string;
    token?: string;
    fetch?: typeof fetch;
}): Promise<string>;
/**
 * Clear the cached branch token
 * Useful for testing or when switching branches
 */
export declare function clearTokenCache(): void;
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