export declare const DEBUG_MESSAGE_PREFIX = "[opencode-antigravity-auth debug]";
export declare function isDebugEnabled(): boolean;
export declare function isVerboseEnabled(): boolean;
export declare function getLogFilePath(): string | undefined;
export interface AntigravityDebugContext {
    id: string;
    streaming: boolean;
    startedAt: number;
}
interface AntigravityDebugRequestMeta {
    originalUrl: string;
    resolvedUrl: string;
    method?: string;
    headers?: HeadersInit;
    body?: BodyInit | null;
    streaming: boolean;
    projectId?: string;
}
interface AntigravityDebugResponseMeta {
    body?: string;
    note?: string;
    error?: unknown;
    headersOverride?: HeadersInit;
}
/**
 * Begins a debug trace for an Antigravity request, logging request metadata when debugging is enabled.
 */
export declare function startAntigravityDebugRequest(meta: AntigravityDebugRequestMeta): AntigravityDebugContext | null;
/**
 * Logs response details for a previously started debug trace when debugging is enabled.
 */
export declare function logAntigravityDebugResponse(context: AntigravityDebugContext | null | undefined, response: Response, meta?: AntigravityDebugResponseMeta): void;
export interface AccountDebugInfo {
    index: number;
    email?: string;
    family: string;
    totalAccounts: number;
    rateLimitState?: {
        claude?: number;
        gemini?: number;
    };
}
export declare function logAccountContext(label: string, info: AccountDebugInfo): void;
export declare function logRateLimitEvent(accountIndex: number, email: string | undefined, family: string, status: number, retryAfterMs: number, bodyInfo: {
    message?: string;
    quotaResetTime?: string;
    retryDelayMs?: number | null;
    reason?: string;
}): void;
export declare function logRateLimitSnapshot(family: string, accounts: Array<{
    index: number;
    email?: string;
    rateLimitResetTimes?: {
        claude?: number;
        gemini?: number;
    };
}>): void;
export declare function logResponseBody(context: AntigravityDebugContext | null | undefined, response: Response, status: number): Promise<string | undefined>;
export declare function logModelFamily(url: string, extractedModel: string | null, family: string): void;
export declare function debugLogToFile(message: string): void;
export {};
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