export declare const isValidStreamAddress: (target: any, name: string, index: number) => void;
export declare const isValidStreamSecret: (target: any, name: string, index: number) => void;
export declare const isValidMemo: (target: any, name: string, index: number) => void;
export declare const isValidAmount: (target: any, name: string, index: number) => void;
export declare const validate: (target: any, name: string, descriptor: PropertyDescriptor) => void;