import { Resource } from './Resource';
import { Debugger } from './utils/Debugger';
/**
 * Resolve the exported object from a UMD-formatted JS resource.
 */
declare class UmdExportResolver extends Debugger {
    #private;
    private constructor();
    protected get debugName(): string;
    get version(): number;
    static getInstance(): UmdExportResolver;
    /**
     * Resolve exported object from a UMD resource.
     * @param res A UMD resource.
     * @param ref A reference which the resource belongs to.
     * @returns Promise of the exported object resoved.
     */
    resolveResource<T>(res: Resource, ref: unknown): Promise<T>;
    /**
     * Resolve exported object from an eval function.
     *
     * If the function returns a promise, wait for it to finish up.
     * @param evalScript Eval function to inject global key.
     * @param src Source url of script, as key of cache.
     * @returns Promise of the resolved global key.
     */
    resolve(evalScript: () => object | undefined, src: string): Promise<keyof Window>;
    get [Symbol.toStringTag](): string;
}
export type { UmdExportResolver };
export declare const getUmdExportResolver: () => UmdExportResolver;