export type ParsedSyncParams = {
    regexp: RegExp;
    append?: string;
}[];
export declare function parseSyncParams(syncParamsStr: string): ParsedSyncParams;
export declare function getChildSrc(fullSrc: string, parentHref: string, syncParams: ParsedSyncParams | undefined, syncPath: null | string): string | null;
export declare function getParentUrl(fullSrc: string, childHref: string, currentParentHref: string, syncParams: ParsedSyncParams | undefined, syncPath: null | string): URL | null;