import { Settings } from './settings';
import { CallStackEntry, WeaveClient } from './weaveClient';
export declare let globalClient: WeaveClient | null;
interface InitOptions {
    project?: string;
    apiKey?: string;
    host?: string;
    settings?: Settings;
}
interface LoginOptions {
    apiKey: string;
    host?: string;
}
/**
 * Log in to Weights & Biases (W&B) using the provided API key.
 *
 * @param {string} apiKey - Your W&B API key.
 * @param {string} [host] - (Optional) The host name (usually only needed if you're using a custom W&B server).
 * @throws {Error} If the API key is not specified or if the connection to the weave trace server cannot be verified.
 */
export declare function login(apiKeyOrOptions: string | LoginOptions): Promise<void>;
/**
 * Initialize the Weave client, which is required for weave tracing to work.
 *
 * @param projectOrOptions - Either a project string (entity/project) or initialization options
 * @param settings - (Optional) Weave tracing settings when using project string format
 * @returns A promise that resolves to the initialized Weave client.
 * @throws {Error} If the initialization fails
 */
export declare function init(projectOrOptions: string | InitOptions, settings?: Settings): Promise<WeaveClient>;
export declare function requireCurrentCallStackEntry(): CallStackEntry;
export declare function requireCurrentChildSummary(): {
    [key: string]: any;
};
export declare function getGlobalClient(): WeaveClient | null;
export declare function requireGlobalClient(): WeaveClient;
export declare function setGlobalClient(client: WeaveClient): void;
export {};
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