/**
 * OAuth Token Types and Utilities
 *
 * Shared type definitions and token utilities for OAuth modules.
 */
import type { UnknownObject } from '../../modules/pipeline/types/common-types.js';
export type StoredOAuthToken = UnknownObject & {
    access_token?: string;
    AccessToken?: string;
    refresh_token?: string;
    api_key?: string;
    apiKey?: string;
    expires_at?: number | string;
    expired?: number | string;
    expiry_date?: number | string;
    norefresh?: boolean;
};
/**
 * Check if value is a non-empty string
 */
export declare function hasNonEmptyString(value: unknown): value is string;
/**
 * Extract access token from stored token
 */
export declare function extractAccessToken(token: StoredOAuthToken | null): string | undefined;
/**
 * Extract API key from stored token
 */
export declare function extractApiKey(token: StoredOAuthToken | null): string | undefined;
/**
 * Check if token has API key field
 */
export declare function hasApiKeyField(token: StoredOAuthToken | null): boolean;
/**
 * Check if token has access token
 */
export declare function hasAccessToken(token: StoredOAuthToken | null): boolean;
/**
 * Check if Qwen has stable API key (not fallback from access_token)
 */
export declare function hasStableQwenApiKey(token: StoredOAuthToken | null): boolean;
/**
 * Check if token has no-refresh flag
 */
export declare function hasNoRefreshFlag(token: StoredOAuthToken | null): boolean;
/**
 * Get token expiry timestamp
 */
export declare function getExpiresAt(token: StoredOAuthToken | null): number | null;
/**
 * Resolve project ID from token
 */
export declare function resolveProjectId(token: UnknownObject | null): string | undefined;
/**
 * Normalize Gemini CLI account token format
 */
export declare function normalizeGeminiCliAccountToken(token: UnknownObject): StoredOAuthToken | null;
/**
 * Sanitize token to standard format
 */
export declare function sanitizeToken(token: UnknownObject | null): StoredOAuthToken | null;