is-browser.ts•1.44 kB
const isStandardBrowserEnv = () => {
// window is only defined when it is a browser
if (typeof window !== 'undefined') {
// Is the process an electron application
// check if we are in electron `renderer`
const electronRenderCheck =
typeof navigator !== 'undefined' &&
navigator.userAgent?.toLowerCase().indexOf(' electron/') > -1
if (electronRenderCheck && process?.versions) {
const electronMainCheck = Object.prototype.hasOwnProperty.call(
process.versions,
'electron',
)
// Both electron checks are only true if the following webPreferences are set in the main electron BrowserWindow()
// webPreferences: {
// sandbox: false,
// nodeIntegration: true
// contextIsolation: false
// }
return !electronMainCheck
}
return typeof window.document !== 'undefined'
}
// return false if nothing is detected
return false
}
const isWebWorkerEnv = () =>
Boolean(
// eslint-disable-next-line no-restricted-globals
typeof self === 'object' &&
// eslint-disable-next-line no-restricted-globals
self?.constructor?.name?.includes('WorkerGlobalScope'),
)
const isReactNativeEnv = () =>
typeof navigator !== 'undefined' && navigator.product === 'ReactNative'
const isBrowser =
isStandardBrowserEnv() || isWebWorkerEnv() || isReactNativeEnv()
export const isWebWorker = isWebWorkerEnv()
export const isReactNativeBrowser = isReactNativeEnv()
export default isBrowser