bootstrap-vue/es/utils/env.js

BootstrapVue, with over 40 plugins and more than 75 custom components, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

"use strict";

exports.__esModule = true;
exports.getNoWarn = exports.getEnv = exports.hasIntersectionObserverSupport = exports.hasPointerEventSupport = exports.hasTouchSupport = exports.hasPassiveEventSupport = exports.isIE = exports.isJSDOM = exports.userAgent = exports.isBrowser = exports.hasMutationObserverSupport = exports.hasPromiseSupport = exports.hasNavigatorSupport = exports.hasDocumentSupport = exports.hasWindowSupport = void 0;

/**
 * Utilities to get information about the current environment
 */
// --- Constants ---
var hasWindowSupport = typeof window !== 'undefined';
exports.hasWindowSupport = hasWindowSupport;
var hasDocumentSupport = typeof document !== 'undefined';
exports.hasDocumentSupport = hasDocumentSupport;
var hasNavigatorSupport = typeof navigator !== 'undefined';
exports.hasNavigatorSupport = hasNavigatorSupport;
var hasPromiseSupport = typeof Promise !== 'undefined';
exports.hasPromiseSupport = hasPromiseSupport;
var hasMutationObserverSupport = typeof MutationObserver !== 'undefined' || typeof WebKitMutationObserver !== 'undefined' || typeof MozMutationObserver !== 'undefined';
exports.hasMutationObserverSupport = hasMutationObserverSupport;
var isBrowser = hasWindowSupport && hasDocumentSupport && hasNavigatorSupport; // Browser type sniffing

exports.isBrowser = isBrowser;
var userAgent = isBrowser ? window.navigator.userAgent.toLowerCase() : '';
exports.userAgent = userAgent;
var isJSDOM = userAgent.indexOf('jsdom') > 0;
exports.isJSDOM = isJSDOM;
var isIE = /msie|trident/.test(userAgent); // Determine if the browser supports the option passive for events

exports.isIE = isIE;

var hasPassiveEventSupport = function () {
  var passiveEventSupported = false;

  if (isBrowser) {
    try {
      var options = {
        get passive() {
          // This function will be called when the browser
          // attempts to access the passive property.

          /* istanbul ignore next: will never be called in JSDOM */
          passiveEventSupported = true;
        }

      };
      window.addEventListener('test', options, options);
      window.removeEventListener('test', options, options);
    } catch (err) {
      /* istanbul ignore next: will never be called in JSDOM */
      passiveEventSupported = false;
    }
  }

  return passiveEventSupported;
}();

exports.hasPassiveEventSupport = hasPassiveEventSupport;
var hasTouchSupport = isBrowser && ('ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0);
exports.hasTouchSupport = hasTouchSupport;
var hasPointerEventSupport = isBrowser && Boolean(window.PointerEvent || window.MSPointerEvent);
exports.hasPointerEventSupport = hasPointerEventSupport;
var hasIntersectionObserverSupport = isBrowser && 'IntersectionObserver' in window && 'IntersectionObserverEntry' in window && // Edge 15 and UC Browser lack support for `isIntersecting`
// but we an use intersectionRatio > 0 instead
// 'isIntersecting' in window.IntersectionObserverEntry.prototype &&
'intersectionRatio' in window.IntersectionObserverEntry.prototype; // --- Getters ---

exports.hasIntersectionObserverSupport = hasIntersectionObserverSupport;

var getEnv = function getEnv(key) {
  var fallback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
  var env = typeof process !== 'undefined' && process ? process.env || {} : {};

  if (!key) {
    /* istanbul ignore next */
    return env;
  }

  return env[key] || fallback;
};

exports.getEnv = getEnv;

var getNoWarn = function getNoWarn() {
  return getEnv('BOOTSTRAP_VUE_NO_WARN');
};

exports.getNoWarn = getNoWarn;