nostr-hooks/dist/hooks/use-realtime-profile/index.js

React hooks for developing Nostr clients

import { NDKKind, profileFromEvent } from '@nostr-dev-kit/ndk';
import { useEffect, useMemo } from 'react';
import { useSubscription } from '../';
export const useRealtimeProfile = (pubkey) => {
    const subId = pubkey ? `realtime-profile-${pubkey}` : undefined;
    const { createSubscription, events, isLoading } = useSubscription(subId);
    const profile = useMemo(() => {
        if (isLoading) {
            return undefined;
        }
        if (!events || events.length == 0) {
            return null;
        }
        const recentEvent = events[events.length - 1];
        if (!recentEvent) {
            return null;
        }
        try {
            return profileFromEvent(recentEvent);
        }
        catch (_) {
            return null;
        }
    }, [events, isLoading]);
    useEffect(() => {
        pubkey &&
            createSubscription({ filters: [{ authors: [pubkey], kinds: [NDKKind.Metadata], limit: 1 }] });
    }, [pubkey, createSubscription]);
    return { profile };
};
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