export declare function resolve(specifier: string, context: {
    parentURL: string;
}, defaultResolve: typeof resolve): Promise<{
    url: string;
}>;
export declare function getFormat(url: any, context: any, defaultGetFormat: any): any;
export declare function transformSource(source: any, context: {
    url: string;
    format: string;
}, defaultTransformSource: any): Promise<any>;