code: function supportToShortCompatString(support, browserAbbrev) {
    let version_added
    if (Array.isArray(support) && support[0] && support[0].version_added) {
      version_added = support[0].version_added
    } else if (support.version_added) {
      version_added = support.version_added
    }
  
    if (version_added) {
      if (typeof(version_added) === 'boolean') {
        return browserAbbrev
      } else {
        return `${browserAbbrev}${version_added}`
      }
    }
  
    return null
  }
docs: https://github.com/mdn/browser-compat-data/blob/master/schemas/compat-data-schema.md
  
  Convert a support statement to a short compat string.
  For example:
  { "ie": { "version_added": "6.0" } } => "IE6.0"
  {
  "support": {
  "firefox": [
  {
  "version_added": "6"
  },
  {
  "prefix": "-moz-",
  "version_added": "3.5",
  "version_removed": "9"
  }
  ]
  }
  } => "FF6"