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            | 19 |   const [activeTab, setActiveTab] = useState("user");
 | 19 |   const [activeTab, setActiveTab] = useState("user");
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            | 20 |   const defaultChatInterval = 1500;
 | 20 |   const defaultChatInterval = 1500;
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            | 21 |   const [chatInterval, setChatInterval] = useState(defaultChatInterval);
 | 21 |   const [chatInterval, setChatInterval] = useState(defaultChatInterval);
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            | 22 |   const [search, setSearch] = useState('');
 | 22 |   const [search, setSearch] = useState('');
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            | Línea 23... | Línea 23... | 
          
            | 23 |  
 | 23 |  
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            | 24 |   const filtredContacts = contacts.filter(({ name }) => name.toLowerCase().includes(search))
 | 24 |   const filtredContacts = contacts.filter(({ name }) => name.toLowerCase().includes(search.toLowerCase()))
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            | Línea 25... | Línea 25... | 
          
            | 25 |   const filtredGroups = groups.filter(({ name }) => name.toLowerCase().includes(search))
 | 25 |   const filtredGroups = groups.filter(({ name }) => name.toLowerCase().includes(search.toLowerCase()))
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            | 26 |  
 | 26 |  
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            | 27 |   // Time intervals
 | 27 |   // Time intervals
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            | 28 |   let heartBeatInterval;
 | 28 |   let heartBeatInterval;
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