function getPrefixedPropName(style, prop) {
    var prefixedProp = cache$2[prop] || '';
    if (prefixedProp) return prefixedProp;

    var camelProp = prop[0].toUpperCase() + prop.slice(1);
    var i = 0;
    while (i < vendorPrefixes.length) {
      prefixedProp = vendorPrefixes[i] ? vendorPrefixes[i] + camelProp : prop;
      if (prefixedProp in style) {
        cache$2[prop] = prefixedProp;
        return prefixedProp;
      }
      ++i;
    }

    return '';
  }
Get prefixed CSS property name when given a non-prefixed CSS property name.
Returns null if the property is not supported at all.

@param {CSSStyleDeclaration} style
@param {String} prop
@returns {String}