/**
 * Base interface for authentication credentials
 */
export interface AuthCredential {
    /**
     * The type of credentials
     */
    type: string;
    /**
     * Get the credential value
     * @returns The credential value
     */
    getValue(): any;
}
/**
 * API key credential implementation
 */
export declare class ApiKeyCredential implements AuthCredential {
    type: string;
    private apiKey;
    /**
     * Initialize the API key credential
     * @param apiKey The API key value
     */
    constructor(apiKey: string);
    /**
     * Get the API key value
     * @returns The API key
     */
    getValue(): string;
}
/**
 * Bearer token credential implementation
 */
export declare class BearerCredential implements AuthCredential {
    type: string;
    private token;
    /**
     * Initialize the bearer token credential
     * @param token The bearer token value
     */
    constructor(token: string);
    /**
     * Get the bearer token value
     * @returns The bearer token
     */
    getValue(): string;
}
/**
 * Basic auth credential implementation
 */
export declare class BasicCredential implements AuthCredential {
    type: string;
    private username;
    private password;
    /**
     * Initialize the basic auth credential
     * @param username The username
     * @param password The password
     */
    constructor(username: string, password: string);
    /**
     * Get the basic auth credentials
     * @returns An object containing the username and password
     */
    getValue(): {
        username: string;
        password: string;
    };
}