@blueprintjs/core/src/compatibility/browser.ts

Core styles & components

/*
 * Copyright 2017 Palantir Technologies, Inc. All rights reserved.
 * Licensed under the BSD-3 License as modified (the “License”); you may obtain a copy
 * of the license at https://github.com/palantir/blueprint/blob/master/LICENSE
 * and https://github.com/palantir/blueprint/blob/master/PATENTS
 */

const userAgent = typeof navigator !== "undefined" ? navigator.userAgent : "";
const browser = {
    isEdge: !!userAgent.match(/Edge/),
    isInternetExplorer: (!!userAgent.match(/Trident/) || !!userAgent.match(/rv:11/)),
    isWebkit: !!userAgent.match(/AppleWebKit/),
 };

export const Browser = {
    isEdge: () => browser.isEdge,
    isInternetExplorer: () => browser.isInternetExplorer,
    isWebkit: () => browser.isWebkit,
};