import type { CcRequestParams } from '../../types/request.types.js';
/**
 * Abstract base class for Clever Cloud authentication mechanisms.
 * Provides a common interface for different authentication strategies
 * including API tokens and OAuth.
 *
 * This class defines the contract for:
 * - Applying authentication to request parameters
 * - Applying authentication to URLs
 * - Retrieving authentication tokens
 */
export declare abstract class CcAuth {
    /**
     * Applies authentication headers to request parameters.
     * Adds an Authorization header with the authentication token.
     *
     * @param requestParams - The request parameters to modify
     */
    applyOnRequestParams(requestParams: Partial<CcRequestParams>): void;
    /**
     * Applies authentication to a URL by adding an authorization query parameter.
     * The token is base64 encoded before being added to the URL.
     *
     * @param url - The URL to modify with authentication
     */
    applyOnUrl(url: URL): void;
    /**
     * Returns the authentication token in the appropriate format for the auth strategy.
     * Must be implemented by concrete authentication classes.
     *
     * @returns The formatted authentication token
     */
    abstract getAuthorization(): string;
}
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