Fix browser detection #1773
Fix browser detection #1773
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mmermerkaya
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hiranya911 and
hsubox76
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BTW, should we merge these |
Web Workers are browser too.
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| @@ -68,13 +67,13 @@ export function isNode(): boolean { | |||
| * Detect Browser Environment | |||
| */ | |||
| export function isBrowser(): boolean { | |||
| return typeof window !== 'undefined'; | |||
| return typeof self === 'object' && self.self === self; | |||
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Just curious why checking self.self? Does some none browser env have self, but not self.self, or just to handle the case where someone defined a variable named self in none browse env?
The intention of this function was just to check if it's a browser window env.
My intuition is that webworker probably needs a dedicated env check logic, but we don't need it anywhere. Do you see any implication of treating webworker as a browser env?
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To make sure that self is actually the global self, and not some random global that a developer defined.
I thought that in the place you use this function, you'd want the result to be true for web workers as well. It's a useful check in both window and web worker contexts.
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I was thinking something along that line too. We could just export the result of the function. Then you can do something like import { Environment, ENVIRONMENT } from `@firebase/util`
if (Environment === ENVIRONMENT.Browser) ....We can also extend the function to return an object if there is other useful information. I think it's a good idea. |
Web Workers are browser too.