FWIW, it's possible to use OAuth login without importing the SDK. I did it on my last company's apps and webapps when we had to optimise for performance, and r

FWIW, it's possible to use OAuth login without importing the SDK. I did it on my last company's apps and webapps when we had to optimise for performance, and removed some dependencies. Of course, now that I'm gone the SDK is back because one of the developers was bullish on using the SDKs at all costs (the webapp, for example, now loads FB, Google and Linkedin SDKs on launch). This is a problem that we developers are creating.