Function getHighEntropyValues

apps/site/util/userAgent.ts:62–88

(
  hints: T
)

 * @see https://learn.microsoft.com/en-us/microsoft-edge/web-platform/how-to-detect-win11
 */
export const getHighEntropyValues = async <T extends Array<keyof UADataValues>>(
  hints: T
): Promise<{ [K in T[number]]: UADataValues[K] }> => {
  let result: UADataValues = EMPTY_UA_DATA;

  // Check if the User-Agent Client Hints API is available
  if (typeof navigator?.userAgentData?.getHighEntropyValues === 'function') {
    try {
      const entropyValues = navigator.userAgentData.getHighEntropyValues(hints);
      // Handle both Promise and non-Promise return values
      result = await Promise.resolve(entropyValues);
    } catch {
      // Fallback to empty object if the API call fails
      result = EMPTY_UA_DATA;
    }
  }

  // Map hints to their values, filtering out empty strings
  const mappedResult = hints.map(hint => [
    hint,
    hint in result && result[hint] ? result[hint] : undefined,
  ]);

  return Object.fromEntries(mappedResult) as {
    [K in T[number]]: UADataValues[K];
  };
};