What to do about `supportsWebAuthn()`...

As highlighted in PR #112 and #113, @simplewebauthn/browser’s supportsWebAuthn() method can’t actually execute in browsers that don’t support WebAuthn, like IE11 and Edge Legacy, because those browsers don’t support ES2018 syntax. This negates the reason for its existence.

As I mentioned in PR #113, the path forward is ambiguous to me. It’s likely not as simple as updating packages/browser/tsconfig.json to target ES5 instead of ES2018.

Possible options I proposed included:

• Maybe there’s a way to build the code with Webpack that lets developers pick-and-choose which version of the library they want to use in their code.
• Maybe the solution is another library that’s only the supportsWebAuthn() method built for ES5 environments.
• A third alternative is I just nuke supportsWebAuthn() and update the docs to say, “if you need to support IE11/Edge Legacy, here’s a snippet of VanillaJS you can copy-paste into your code to tell if WebAuthn is available.”

I’m open to suggestions on how we might solve the problem of building a library that simultaneously needs to sometimes support ES5 while often supporting ES2018.

[Moumouls]

[MasterKale]

I finally got a new release out - this should now be fixed in @simplewebauthn/browser@3.0.0! 🎉

See https://github.com/MasterKale/SimpleWebAuthn/releases/tag/v3.0.0 for more info.