55 lines
2.4 KiB
JavaScript
55 lines
2.4 KiB
JavaScript
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'use strict';
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exports.__esModule = true;
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var canUseDOM = exports.canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);
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var addEventListener = exports.addEventListener = function addEventListener(node, event, listener) {
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return node.addEventListener ? node.addEventListener(event, listener, false) : node.attachEvent('on' + event, listener);
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};
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var removeEventListener = exports.removeEventListener = function removeEventListener(node, event, listener) {
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return node.removeEventListener ? node.removeEventListener(event, listener, false) : node.detachEvent('on' + event, listener);
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};
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var getConfirmation = exports.getConfirmation = function getConfirmation(message, callback) {
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return callback(window.confirm(message));
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}; // eslint-disable-line no-alert
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/**
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* Returns true if the HTML5 history API is supported. Taken from Modernizr.
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*
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* https://github.com/Modernizr/Modernizr/blob/master/LICENSE
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* https://github.com/Modernizr/Modernizr/blob/master/feature-detects/history.js
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* changed to avoid false negatives for Windows Phones: https://github.com/reactjs/react-router/issues/586
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*/
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var supportsHistory = exports.supportsHistory = function supportsHistory() {
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var ua = window.navigator.userAgent;
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if ((ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) && ua.indexOf('Mobile Safari') !== -1 && ua.indexOf('Chrome') === -1 && ua.indexOf('Windows Phone') === -1) return false;
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return window.history && 'pushState' in window.history;
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};
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/**
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* Returns true if browser fires popstate on hash change.
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* IE10 and IE11 do not.
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*/
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var supportsPopStateOnHashChange = exports.supportsPopStateOnHashChange = function supportsPopStateOnHashChange() {
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return window.navigator.userAgent.indexOf('Trident') === -1;
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};
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/**
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* Returns false if using go(n) with hash history causes a full page reload.
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*/
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var supportsGoWithoutReloadUsingHash = exports.supportsGoWithoutReloadUsingHash = function supportsGoWithoutReloadUsingHash() {
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return window.navigator.userAgent.indexOf('Firefox') === -1;
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};
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/**
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* Returns true if a given popstate event is an extraneous WebKit event.
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* Accounts for the fact that Chrome on iOS fires real popstate events
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* containing undefined state when pressing the back button.
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*/
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var isExtraneousPopstateEvent = exports.isExtraneousPopstateEvent = function isExtraneousPopstateEvent(event) {
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return event.state === undefined && navigator.userAgent.indexOf('CriOS') === -1;
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};
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