Function fetchHtmlTitle

ui-tui/src/lib/externalLink.ts:335–368

(normalizedUrl: string)

}

async function fetchHtmlTitle(normalizedUrl: string): Promise<string> {
  const controller = new AbortController()
  const timeout = setTimeout(() => controller.abort(), TITLE_TIMEOUT_MS)

  try {
    const response = await fetch(normalizedUrl, {
      headers: {
        Accept: 'text/html,application/xhtml+xml;q=0.9,*/*;q=0.5',
        'Accept-Language': 'en-US,en;q=0.7',
        'User-Agent': TITLE_USER_AGENT
      },
      redirect: 'follow',
      signal: controller.signal
    })

    if (!response.ok) {
      return ''
    }

    const contentType = response.headers.get('content-type')

    if (contentType && !/(?:html|xml|text\/html)/i.test(contentType)) {
      return ''
    }

    const html = await readResponseSnippet(response)

    return parseHtmlTitle(html).slice(0, TITLE_MAX_LENGTH)
  } catch {
    return ''
  } finally {
    clearTimeout(timeout)
  }
}

export function fetchLinkTitle(url: string): Promise<string> {
  const normalizedUrl = normalizeExternalUrl(url)