export declare function isRoomId(id?: string): boolean;
export declare function isContactId(id?: string): boolean;
export declare function isContactOfficialId(id?: string): boolean;
export declare function isStrangerV1(strangerId?: string): boolean;
export declare function isStrangerV2(strangerId?: string): boolean;
export declare function isPayload(payload: object): boolean;
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