File size: 1,035 Bytes
2517be1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | /**
* Favicon utility functions for extracting favicons from URLs.
*/
import { getProxiedUrlString } from './cors-proxy';
import {
GOOGLE_FAVICON_BASE_URL,
DEFAULT_FAVICON_SIZE,
DOMAIN_SEPARATOR,
ROOT_DOMAIN_MIN_PARTS
} from '$lib/constants';
/**
* Gets a favicon URL for a given URL using Google's favicon service.
* Returns null if the URL is invalid.
*
* @param urlString - The URL to get the favicon for
* @returns The favicon URL or null if invalid
*/
export function getFaviconUrl(urlString: string, useProxy = true): string | null {
try {
const url = new URL(urlString);
const hostnameParts = url.hostname.split(DOMAIN_SEPARATOR);
const rootDomain =
hostnameParts.length >= ROOT_DOMAIN_MIN_PARTS
? hostnameParts.slice(-ROOT_DOMAIN_MIN_PARTS).join(DOMAIN_SEPARATOR)
: url.hostname;
const googleFaviconUrl = `${GOOGLE_FAVICON_BASE_URL}?domain=${rootDomain}&sz=${DEFAULT_FAVICON_SIZE}`;
return useProxy ? getProxiedUrlString(googleFaviconUrl) : googleFaviconUrl;
} catch {
return null;
}
}
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