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/* NOTE: There is similar (but currently insanely convoluted)
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   functionality in @cocalc/frontend/feature.ts.
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*/
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declare var window;
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export function isIOS(): boolean {
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  if (typeof window == "undefined") return false;
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  const { navigator } = window;
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  return (
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    navigator?.userAgent?.match(/Mac/) &&
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    navigator.maxTouchPoints &&
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    navigator.maxTouchPoints > 2
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  );
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}
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export function isSafari(): boolean {
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  if (typeof window == "undefined") return false;
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  if (isChrome()) return false;
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  const { navigator } = window;
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  return navigator?.userAgent?.match(/Safari/);
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}
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export function isChrome(): boolean {
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  if (typeof window == "undefined") return false;
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  const { navigator } = window;
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  return /Chrom(e|ium)/.test(navigator?.userAgent ?? "");
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}
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