Function getUserAgentData

src/sources/user_agent_data.ts:53–87

()

 * @see https://developer.mozilla.org/en-US/docs/Web/API/User-Agent_Client_Hints_API
 */
export default async function getUserAgentData(): Promise<StableUserAgentData | undefined> {
  const uaData = (navigator as unknown as { userAgentData?: NavigatorUAData }).userAgentData

  if (!uaData) {
    return undefined
  }

  const filteredBrands = uaData.brands.filter(({ brand }) => !isGreaseBrand(brand)).map(({ brand }) => brand)

  const brands = filteredBrands.length > 1 ? filteredBrands.filter((b) => b !== 'Chromium') : filteredBrands

  const result: StableUserAgentData = {
    brands,
    mobile: uaData.mobile,
    platform: uaData.platform,
  }

  if (uaData.getHighEntropyValues) {
    try {
      const highEntropy = await uaData.getHighEntropyValues(['architecture', 'bitness', 'model', 'platformVersion'])
      result.architecture = highEntropy.architecture
      result.bitness = highEntropy.bitness
      result.model = highEntropy.model
      result.platformVersion = highEntropy.platformVersion
    } catch (error) {
      if (error instanceof DOMException && error.name === 'NotAllowedError') {
        result.highEntropyStatus = HighEntropyStatus.NotAllowed
      } else {
        throw error
      }
    }
  }

  return result
}