message: test(platform-browser): add supportsRegExUnicodeFlag method
  PR Close
diff: @@ -75,6 +75,8 @@ export class BrowserDetection {
  return (typeof(document as any).registerElement !== 'undefined');
  }
  + get supportsRegExUnicodeFlag(): boolean { return RegExp.prototype.hasOwnProperty('unicode'); }
  +
  get supportsShadowDom() {
  const testEl = document.createElement('div');
  return (typeof testEl.attachShadow !== 'undefined');
  