/**
 * Default and required configuration values for the Paylock Node SDK.
 * These are merged with user-supplied values by the Config.ts class.
 */
type Nullable<T> = T | null;
/**
 * Resolve the domain for Paylock requests:
 * - If user supplies domain → sanitize and use it if valid
 * - Else try environment-based inference
 * - Else load or generate stable fingerprint
 */
export declare function resolvePaylockDomain(userSuppliedDomain: unknown): string;
export declare function resolvePaylockEnvironment(userSuppliedEnvironment: unknown): 'production' | 'staging' | 'development';
export declare const requiredConfig: {
    secret: Nullable<string>;
    /**
     * Domain is required by Paylock when domain-aware checks are enabled.
     * If user doesn't provide it, we attempt inference from environment.
     * If we still can't infer a valid hostname, we generate a stable fingerprint.
     */
    domain: Nullable<string>;
};
export declare const defaultConfig: {
    base_url: string;
    environment: Nullable<string>;
    recheck: boolean;
    license: Nullable<string>;
    api_key: Nullable<string>;
    action: string;
    timeout: number;
    per_page: Nullable<number>;
    injectables: boolean;
    injectablesVerify: boolean;
    injectablesPath: Nullable<string>;
    handleInjectables: boolean;
    injectablesProcessor: any;
    invalidBehavior: string;
    redirectUrl: Nullable<string>;
    customInvalidMessage: string;
    customInvalidView: Nullable<string>;
    cachePath: null;
    onReady: ((response: any) => void) | null;
};
export {};