browsernizr/test/css/focuswithin.js

Modernizr wrapper for use with browserify

/*!
{
  "name": "CSS :focus-within pseudo-selector",
  "caniuse": "css-focus-visible",
  "property": "focuswithin",
  "tags": ["css"]
}
!*/
var Modernizr = require('./../../lib/Modernizr.js');
  Modernizr.addTest('focuswithin', function() {
    try {
      document.querySelector(':focus-within');
    } catch (error) {
      return false;
    }
    return true;
  });