detectincognitojs
Version:
detectIncognito.js can be used to detect incognito mode & other private browsing modes on most modern browsers.
334 lines (333 loc) • 18.8 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
exports.__esModule = true;
exports.detectIncognito = void 0;
function detectIncognito() {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, new Promise(function (resolve, reject) {
var browserName = 'Unknown';
var callbackSettled = false;
function __callback(isPrivate) {
if (callbackSettled) {
return;
}
callbackSettled = true;
resolve({
isPrivate: isPrivate,
browserName: browserName
});
}
function identifyChromium() {
var ua = navigator.userAgent;
if (ua.match(/Chrome/)) {
if (navigator.brave !== undefined) {
return 'Brave';
}
else if (ua.match(/Edg/)) {
return 'Edge';
}
else if (ua.match(/OPR/)) {
return 'Opera';
}
return 'Chrome';
}
else {
return 'Chromium';
}
}
function feid() {
var toFixedEngineID = 0;
var neg = parseInt("-1");
try {
neg.toFixed(neg);
}
catch (e) {
toFixedEngineID = e.message.length;
}
return toFixedEngineID;
}
function isSafari() {
return feid() === 44 || feid() === 43;
}
function isChrome() {
return feid() === 51;
}
function isFirefox() {
return feid() === 25;
}
function isMSIE() {
return navigator.msSaveBlob !== undefined;
}
/**
* Safari (Safari for iOS & macOS)
**/
function currentSafariTest() {
return __awaiter(this, void 0, void 0, function () {
var e_1, message, matchesExpectedError;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, navigator.storage.getDirectory()];
case 1:
_a.sent();
__callback(false);
return [3 /*break*/, 3];
case 2:
e_1 = _a.sent();
message = (e_1 instanceof Error && typeof e_1.message === 'string') ? e_1.message : String(e_1);
matchesExpectedError = message.includes('unknown transient reason');
__callback(matchesExpectedError);
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
});
}
function safari13to18Test() {
var tmp = String(Math.random());
try {
var dbReq = indexedDB.open(tmp, 1);
dbReq.onupgradeneeded = function (ev) {
var db = ev.target.result;
var finish = function (priv) { __callback(priv); };
try {
db.createObjectStore('t', { autoIncrement: true }).put(new Blob());
finish(false);
}
catch (err) {
var message = (err instanceof Error && typeof err.message === 'string') ? err.message : String(err);
if (message.includes('are not yet supported'))
finish(true);
else
finish(false);
}
finally {
db.close();
indexedDB.deleteDatabase(tmp);
}
};
dbReq.onerror = function () { return __callback(false); };
}
catch (_a) {
__callback(false);
}
}
function oldSafariTest() {
var openDB = window.openDatabase;
var storage = window.localStorage;
try {
openDB(null, null, null, null);
}
catch (e) {
__callback(true);
return;
}
try {
storage.setItem('test', '1');
storage.removeItem('test');
}
catch (e) {
__callback(true);
return;
}
__callback(false);
}
function safariPrivateTest() {
var _a;
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (!(typeof ((_a = navigator.storage) === null || _a === void 0 ? void 0 : _a.getDirectory) === 'function')) return [3 /*break*/, 2];
return [4 /*yield*/, currentSafariTest()];
case 1:
_b.sent();
return [3 /*break*/, 3];
case 2:
if (navigator.maxTouchPoints !== undefined) {
safari13to18Test();
}
else {
oldSafariTest();
}
_b.label = 3;
case 3: return [2 /*return*/];
}
});
});
}
/**
* Chrome
**/
function getQuotaLimit() {
var _a, _b, _c;
var w = window;
return (_c = (_b = (_a = w === null || w === void 0 ? void 0 : w.performance) === null || _a === void 0 ? void 0 : _a.memory) === null || _b === void 0 ? void 0 : _b.jsHeapSizeLimit) !== null && _c !== void 0 ? _c : 1073741824;
}
// >= 76
function storageQuotaChromePrivateTest() {
navigator.webkitTemporaryStorage.queryUsageAndQuota(function (_, quota) {
var quotaInMib = Math.round(quota / (1024 * 1024));
var quotaLimitInMib = Math.round(getQuotaLimit() / (1024 * 1024)) * 2;
__callback(quotaInMib < quotaLimitInMib);
}, function (e) {
reject(new Error('detectIncognito somehow failed to query storage quota: ' +
e.message));
});
}
// 50 to 75
function oldChromePrivateTest() {
var fs = window.webkitRequestFileSystem;
var success = function () {
__callback(false);
};
var error = function () {
__callback(true);
};
fs(0, 1, success, error);
}
function chromePrivateTest() {
if (self.Promise !== undefined && self.Promise.allSettled !== undefined) {
storageQuotaChromePrivateTest();
}
else {
oldChromePrivateTest();
}
}
/**
* Firefox
**/
function firefoxPrivateTest() {
var _a;
return __awaiter(this, void 0, void 0, function () {
var e_2, message, matchesExpectedError, request_1;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (!(typeof ((_a = navigator.storage) === null || _a === void 0 ? void 0 : _a.getDirectory) === 'function')) return [3 /*break*/, 5];
_b.label = 1;
case 1:
_b.trys.push([1, 3, , 4]);
return [4 /*yield*/, navigator.storage.getDirectory()];
case 2:
_b.sent();
__callback(false);
return [3 /*break*/, 4];
case 3:
e_2 = _b.sent();
message = (e_2 instanceof Error && typeof e_2.message === 'string') ? e_2.message : String(e_2);
matchesExpectedError = message.includes('Security error');
__callback(matchesExpectedError);
return [2 /*return*/];
case 4: return [3 /*break*/, 6];
case 5:
request_1 = indexedDB.open('inPrivate');
request_1.onerror = function (event) {
if (request_1.error && request_1.error.name === 'InvalidStateError') {
event.preventDefault();
}
__callback(true);
};
request_1.onsuccess = function () {
indexedDB.deleteDatabase('inPrivate');
__callback(false);
};
_b.label = 6;
case 6: return [2 /*return*/];
}
});
});
}
/**
* MSIE
**/
function msiePrivateTest() {
__callback(window.indexedDB === undefined);
}
function main() {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!isSafari()) return [3 /*break*/, 2];
browserName = 'Safari';
return [4 /*yield*/, safariPrivateTest()];
case 1:
_a.sent();
return [3 /*break*/, 6];
case 2:
if (!isChrome()) return [3 /*break*/, 3];
browserName = identifyChromium();
chromePrivateTest();
return [3 /*break*/, 6];
case 3:
if (!isFirefox()) return [3 /*break*/, 5];
browserName = 'Firefox';
return [4 /*yield*/, firefoxPrivateTest()];
case 4:
_a.sent();
return [3 /*break*/, 6];
case 5:
if (isMSIE()) {
browserName = 'Internet Explorer';
msiePrivateTest();
}
else {
reject(new Error('detectIncognito cannot determine the browser'));
}
_a.label = 6;
case 6: return [2 /*return*/];
}
});
});
}
main()["catch"](reject);
})];
case 1: return [2 /*return*/, _a.sent()];
}
});
});
}
exports.detectIncognito = detectIncognito;
if (typeof window !== 'undefined') {
window.detectIncognito = detectIncognito;
}
exports["default"] = detectIncognito;