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@matyasfodor matyasfodor/incognito.js
Last active Jul 18, 2019

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var incognito = function(require, module, exports) {
"use strict";
function isWebkitRequestFileSystem() {
return !!window.webkitRequestFileSystem
}
function isFirefoxIndexedDB() {
return !!window.indexedDB && /Firefox/.test(window.navigator.userAgent)
}
function isIE10PlusOrEdge() {
if (document.documentMode) {
var e = window.navigator.userAgent.match(/(?:MSIE|Trident.*rv:)\s*([\d\.]+)/i);
return "object" === (void 0 === e ? "undefined" : _typeof(e)) && parseInt(e[1]) >= 10
}
return !!window.StyleMedia && /Edge\//i.test(window.navigator.userAgent)
}
function isSafariLocalStorage() {
return !!window.localStorage && /Safari/.test(window.navigator.userAgent)
}
function detectWebkitRequestFileSystem(e, t) {
return new Promise(function(e) {
if (!window.webkitRequestFileSystem)
return e(null);
window.webkitRequestFileSystem(window.TEMPORARY, 1, e.bind(null, !1), e.bind(null, !0))
}
)
}
function detectFirefoxIndexedDB() {
return new Promise(function(e) {
if (!window.indexedDB)
return e(null);
var t = void 0;
try {
t = window.indexedDB.open("test")
} catch (t) {
return e(!0)
}
var n = 0
, i = window.setInterval(function() {
if ("done" === t.readyState) {
var o = !t.result;
return window.clearInterval(i),
e(o)
}
if (++n >= 50)
return window.clearInterval(i),
e(null)
}, 10)
}
)
}
function detectIE10PlusOrEdge() {
return new Promise(function(e) {
try {
return e(window.indexedDB ? !1 : !0)
} catch (t) {
return e(!0)
}
}
)
}
function detectSafariLocalStorage() {
return new Promise(function(e) {
if (!window.localStorage)
return e(null);
try {
window.localStorage.setItem("test", 1),
window.localStorage.removeItem("test")
} catch (t) {
return e(!0)
}
return e(!1)
}
)
}
function detectIncognito() {
return new Promise(function(e) {
if (incognitoCheckIsDisabled())
return e("disabled");
for (var t in detects) {
var n = _slicedToArray(detects[t], 3)
, i = n[1]
, o = n[2];
if (i())
return e(o())
}
return e(null)
}
)
}
function debugIncognito() {
var e = detects.map(function(e) {
var t = _slicedToArray(e, 3)
, n = t[0]
, i = t[1];
return (0,
t[2])().then(function(e) {
return {
label: n,
browser: i(),
incognito: e
}
})
});
return Promise.all(e)
}
function incognitoCheckIsDisabled() {
return hasIncognitoCheckDisabledCookie() || hasIncognitoCheckDisabledQuery()
}
function hasIncognitoCheckDisabledCookie() {
return new RegExp(COOKIE_NAME + "=" + COOKIE_VALUE).test(document.cookie)
}
function hasIncognitoCheckDisabledQuery() {
return new RegExp("[?&]" + URL_PARAM).test(window.location.search)
}
function setIncognitoCheckDisabled() {
var e = new Date;
e.setTime(e.getTime() + 31104e6),
document.cookie = COOKIE_NAME + "=" + COOKIE_VALUE + "; expires=" + e.toUTCString() + "; path=/"
}
function init() {
hasIncognitoCheckDisabledQuery() && setIncognitoCheckDisabled()
}
var _slicedToArray = function() {
function e(e, t) {
var n = []
, i = !0
, o = !1
, r = void 0;
try {
for (var c, u = e[Symbol.iterator](); !(i = (c = u.next()).done) && (n.push(c.value),
!t || n.length !== t); i = !0)
;
} catch (e) {
o = !0,
r = e
} finally {
try {
!i && u.return && u.return()
} finally {
if (o)
throw r
}
}
return n
}
return function(t, n) {
if (Array.isArray(t))
return t;
if (Symbol.iterator in Object(t))
return e(t, n);
throw new TypeError("Invalid attempt to destructure non-iterable instance")
}
}()
, _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function(e) {
return typeof e
}
: function(e) {
return e && "function" == typeof Symbol && e.constructor === Symbol && e !== Symbol.prototype ? "symbol" : typeof e
}
, COOKIE_NAME = "mittr-incognito-check-disabled"
, COOKIE_VALUE = "1"
, URL_PARAM = "disable-incognito-check"
, detects = [["Webkit RequestFileSystem", isWebkitRequestFileSystem, detectWebkitRequestFileSystem], ["Firefox IndexedDB", isFirefoxIndexedDB, detectFirefoxIndexedDB], ["IE10+ / Edge", isIE10PlusOrEdge, detectIE10PlusOrEdge], ["Safari LocalStorage", isSafariLocalStorage, detectSafariLocalStorage]];
init(),
module.exports = {
detectIncognito: detectIncognito,
debugIncognito: debugIncognito
};
}
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