declare function isUrlValid(url: string): boolean;
declare function isActivityPubUrlValid(url: string): boolean;
declare function isBaseActivityValid(activity: any, type: string): boolean;
declare function isObjectValid(object: any): boolean;
declare function setValidAttributedTo(obj: any): boolean;
export { isUrlValid, isActivityPubUrlValid, isBaseActivityValid, setValidAttributedTo, isObjectValid };
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