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Update isBrowser.md

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atomiks
2018-03-19 12:54:51 +10:00
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@ -5,9 +5,7 @@ without throwing errors.
Use `Array.includes()` on the `typeof` values of both `window` and `document` (globals usually only available in a
browser environment unless they were explicitly defined), which will return `true` if one of them is `undefined`.
`typeof` allows globals to be checked for existence without throwing a ReferenceError.
If both of them are not `undefined`, then the current environment is assumed to be a browser.
`typeof` allows globals to be checked for existence without throwing a ReferenceError. If both of them are not `undefined`, then the current environment is assumed to be a browser.
```js
const isBrowser = () => ![typeof window, typeof document].includes('undefined')