export type CopilotAuthState = {
    type: string;
    refresh?: string;
    access?: string;
    expires?: number;
    enterpriseUrl?: string;
};
export type CopilotProviderModel = {
    id?: string;
    api: {
        url?: string;
        npm?: string;
    };
    cost?: {
        input: number;
        output: number;
        cache: {
            read: number;
            write: number;
        };
    };
};
export type CopilotProviderConfig = {
    models?: Record<string, CopilotProviderModel>;
};
export type OfficialCopilotConfig = {
    baseURL?: string;
    apiKey: string;
    fetch: (request: Request | URL | string, init?: RequestInit) => Promise<Response>;
};
export type OfficialChatHeadersHook = (input: {
    sessionID: string;
    agent: string;
    model: {
        providerID: string;
        api?: {
            npm?: string;
        };
    };
    provider: {
        source: string;
        info: object;
        options: object;
    };
    message: {
        id: string;
        sessionID?: string;
    };
}, output: {
    headers: Record<string, string>;
}) => Promise<void>;
export declare function loadOfficialCopilotConfig(input: {
    getAuth: () => Promise<CopilotAuthState | undefined>;
    baseFetch?: typeof fetch;
    provider?: CopilotProviderConfig;
    version?: string;
}): Promise<OfficialCopilotConfig | undefined>;
export declare function createOfficialFetchAdapter(input: {
    getAuth: () => Promise<CopilotAuthState | undefined>;
    baseFetch?: typeof fetch;
    provider?: CopilotProviderConfig;
    version?: string;
}): (request: Request | URL | string, init?: RequestInit) => Promise<Response>;
export declare function loadOfficialCopilotChatHeaders(input: {
    client?: object;
    directory?: string;
}): Promise<OfficialChatHeadersHook>;