@mui/utils/isFocusVisible/isFocusVisible.js

Utility functions for React components.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = isFocusVisible;
/**
 * Returns a boolean indicating if the event's target has :focus-visible
 */
function isFocusVisible(element) {
  try {
    return element.matches(':focus-visible');
  } catch (error) {
    // Do not warn on jsdom tests, otherwise all tests that rely on focus have to be skipped
    // Tests that rely on `:focus-visible` will still have to be skipped in jsdom
    if (process.env.NODE_ENV !== 'production' && !/jsdom/.test(window.navigator.userAgent)) {
      console.warn(['MUI: The `:focus-visible` pseudo class is not supported in this browser.', 'Some components rely on this feature to work properly.'].join('\n'));
    }
  }
  return false;
}