print-js/src/js/browser.js

A tiny javascript library to help printing from the web.

const Browser = {
  // Firefox 1.0+
  isFirefox: () => {
    return typeof InstallTrigger !== 'undefined'
  },
  // Internet Explorer 6-11
  isIE: () => {
    return navigator.userAgent.indexOf('MSIE') !== -1 || !!document.documentMode
  },
  // Edge 20+
  isEdge: () => {
    return !Browser.isIE() && !!window.StyleMedia
  },
  // Chrome 1+
  isChrome: () => {
    return !!window.chrome && !!window.chrome.webstore
  },
  // At least Safari 3+: "[object HTMLElementConstructor]"
  isSafari: () => {
    return Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0 ||
        navigator.userAgent.toLowerCase().indexOf('safari') !== -1
  }
}

export default Browser