export type OAuthCredentials = {
    refresh: string;
    access: string;
    expires: number;
    projectId?: string;
    email?: string;
};
export type OAuthCallbacks = {
    onAuth(params: {
        url: string;
        instructions?: string;
    }): void;
    onPrompt?(params: {
        message: string;
    }): Promise<string>;
    onSelect?(params: {
        message: string;
        options: {
            id: string;
            label: string;
        }[];
    }): Promise<string | undefined>;
};
export type AntigravityApiKey = {
    token: string;
    projectId: string;
};
export declare const DEFAULT_ENDPOINT = "https://cloudcode-pa.googleapis.com";
export declare const ENDPOINT_FALLBACKS: string[];
export declare const REDIRECT_URI = "http://localhost:51121/oauth-callback";
export declare function antigravityEnv(name: string): string | undefined;
export declare const CALLBACK_HOST: string;
export declare const DEFAULT_PROJECT_ID: string;
export declare const CLIENT_ID: string;
export declare const CLIENT_SECRET: string;
export declare const SCOPES: string[];
export declare const AUTH_URL = "https://accounts.google.com/o/oauth2/v2/auth";
export declare const TOKEN_URL = "https://oauth2.googleapis.com/token";
export declare let lastStatus: number | undefined;
export declare function setLastStatus(status: number | undefined): void;
export declare let lastEndpoint: string | undefined;
export declare function setLastEndpoint(endpoint: string | undefined): void;
export declare let lastError: string | undefined;
export declare function setLastError(error: string | undefined): void;
export declare let lastProjectId: string | undefined;
export declare function setLastProjectId(projectId: string | undefined): void;
export declare let lastResolvedRuntimeModel: string | undefined;
export declare function setLastResolvedRuntimeModel(model: string | undefined): void;
export declare let lastAvailableModels: string | undefined;
export declare function setLastAvailableModels(models: string | undefined): void;
export declare let lastMatchedModelDebug: string | undefined;
export declare function setLastMatchedModelDebug(debug: string | undefined): void;
export declare function nowRequestId(): string;
export declare function stableProjectId(seed: string): string;
export declare function endpointCandidates(): string[];
export declare function safeError(error: unknown): string;
export declare function sanitizeText(text: unknown): string;
export declare function parseApiKey(apiKeyRaw: string | undefined): AntigravityApiKey;
export declare function antigravityHeaders(token: string): Record<string, string>;
export declare function jsonOrTextError(text: string): string;
export declare function extractProjectId(data: any): string | undefined;
export type DynamicModelInfo = {
    id: string;
    experiments?: string[];
    apiProvider?: string;
    modelProvider?: string;
};
export declare function fetchAvailableRuntimeModel(token: string, projectId: string, requestedRuntimeModel: string): Promise<DynamicModelInfo | undefined>;
export declare function loadCodeAssist(token: string): Promise<string | undefined>;
export declare function loginAntigravity(callbacks: OAuthCallbacks): Promise<OAuthCredentials>;
export declare function refreshAntigravityToken(credentials: OAuthCredentials): Promise<OAuthCredentials>;
export declare function getApiKey(credentials: OAuthCredentials): string;