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/** * @license * Copyright 2017 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * Returns navigator.userAgent string or '' if it's not defined. * @return {string} user agent string */ export declare const getUA: () => string; /** * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device. * * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap in the Ripple emulator) nor * Cordova `onDeviceReady`, which would normally wait for a callback. * * @return {boolean} isMobileCordova */ export declare const isMobileCordova: () => boolean; /** * Detect React Native. * * @return {boolean} True if ReactNative environment is detected. */ export declare const isReactNative: () => boolean; /** * Detect Node.js. * * @return {boolean} True if Node.js environment is detected. */ export declare const isNodeSdk: () => boolean;