import { AXSecurityDomain } from "./AXSecurityDomain";
/**
 * ActionScript 3 has different behaviour when deciding whether to call toString or valueOf
 * when one operand is a string. Unlike JavaScript, it calls toString if one operand is a
 * string and valueOf otherwise. This sucks, but we have to emulate this behaviour because
 * YouTube depends on it.
 *
 * AS3 also overloads the `+` operator to concatenate XMLs/XMLLists instead of stringifying them.
 */
export declare function axAdd(l: any, r: any, sec: AXSecurityDomain): any;