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  "regions": false,
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    "skipink": true
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  "csstransforms3d": true,
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  "cssvminunit": true,
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  "time": false,
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  "es5": true,
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  "es6collections": true,
  "generators": true,
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  "devicemotion": true,
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  "forcetouch": false,
  "hashchange": true,
  "oninput": true,
  "pointerevents": true,
  "proximity": false,
  "filereader": true,
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  "flash": false,
  "fullscreen": false,
  "gamepads": true,
  "geolocation": true,
  "hiddenscroll": true,
  "history": true,
  "htmlimports": false,
  "ie8compat": false,
  "sandbox": true,
  "seamless": false,
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  "imgcrossorigin": true,
  "lazyloading": true,
  "sizes": true,
  "srcset": true,
  "capture": true,
  "fileinput": true,
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  "input-formaction": true,
  "formattribute": true,
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  "input-formenctype": true,
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  "input-formtarget": true,
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    "tel": true,
    "url": true,
    "email": true,
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    "date": true,
    "month": true,
    "week": true,
    "time": true,
    "datetime-local": true,
    "number": true,
    "range": true,
    "color": true
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  "intl": true,
  "ligatures": true,
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  "mathml": true,
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  "pointermq": true,
  "messagechannel": true,
  "beacon": true,
  "effectivetype": false,
  "lowbandwidth": false,
  "eventsource": true,
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  "xhrresponsetypearraybuffer": true,
  "xhrresponsetypeblob": true,
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  "xhrresponsetypetext": true,
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  "pagevisibility": true,
  "performance": true,
  "pointerlock": false,
  "postmessage": {
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  "queryselector": true,
  "prefetch": false,
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  "raf": true,
  "scriptasync": true,
  "scriptdefer": true,
  "scrolltooptions": true,
  "serviceworker": true,
  "speechrecognition": true,
  "speechsynthesis": true,
  "cookies": true,
  "localstorage": true,
  "quotamanagement": false,
  "sessionstorage": true,
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  "websqldatabase": true,
  "stylescoped": false,
  "svg": true,
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  "svgclippaths": true,
  "svgfilters": true,
  "svgforeignobject": true,
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  "textareamaxlength": true,
  "textencoder": true,
  "textdecoder": true,
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  "unicoderange": true,
  "bloburls": true,
  "urlparser": true,
  "urlsearchparams": true,
  "vibrate": false,
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    "h264": "probably",
    "h265": "",
    "webm": "probably",
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    "hls": "probably",
    "av1": ""
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  "videoloop": true,
  "videopreload": true,
  "vml": false,
  "webintents": false,
  "webanimations": true,
  "publickeycredential": true,
  "webgl": true,
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    "EXT_blend_minmax": true,
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    "EXT_color_buffer_half_float": true,
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    "EXT_frag_depth": true,
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  "mediastream": true,
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  "atob-btoa": true,
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  "matchmedia": true,
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  "sharedworkers": true,
  "webworkers": true,
  "transferables": true,
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