/**
 * UMD (Universal Module Definition) loader implementation
 */
import { BaseModuleLoader } from "./base-loader";
import type { ModuleFormat, LoadOptions } from "../types";
/**
 * Loader for UMD (Universal Module Definition) modules
 */
export declare class UMDModuleLoader extends BaseModuleLoader {
    protected format: ModuleFormat;
    /**
     * Load a UMD module using script injection (browser) or require (Node.js)
     */
    loadModule<T = any>(url: string, options?: LoadOptions): Promise<T>;
    /**
     * Internal UMD loading implementation
     */
    private loadUMDModule;
    /**
     * Load UMD module in browser environment using script injection
     */
    private loadUMDInBrowser;
    /**
     * Load UMD module in Node.js environment
     */
    private loadUMDInNode;
    /**
     * Extract module from global scope after script loading
     */
    private extractGlobalModule;
    /**
     * Extract specific exports from loaded module
     */
    private extractModuleExports;
    /**
     * Check if running in Node.js environment
     */
    private isNodeEnvironment;
    /**
     * Check if UMD is supported in the current environment
     */
    static isSupported(): boolean;
    /**
     * Preload UMD module without caching
     */
    preloadModule(url: string): Promise<void>;
}
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