Whether the browser has built-in HLS support.

supportsNativeHls.js

// From https://github.com/videojs/http-streaming/blob/d258fae646a3a4a6dc2ba26c729710dd8f39876a/src/videojs-http-streaming.js#L430-L464
/**
 * Whether the browser has built-in HLS support.
 */
window._supportsNativeHls = (function() {
  if (!document || !document.createElement) {
    return false;
  }

  const video = document.createElement('video');

  // HLS manifests can go by many mime-types
  const canPlay = [
    // Apple santioned
    'application/vnd.apple.mpegurl',
    // Apple sanctioned for backwards compatibility
    'audio/mpegurl',
    // Very common
    'audio/x-mpegurl',
    // Very common
    'application/x-mpegurl',
    // Included for completeness
    'video/x-mpegurl',
    'video/mpegurl',
    'application/mpegurl'
  ];

  return canPlay.some(function(canItPlay) {
    return (/maybe|probably/i).test(video.canPlayType(canItPlay));
  });
}());
console.warn('window._supportsNativeHls?', window._supportsNativeHls)