Your implementation looks awesome! But we're not allowed to use it for our proprietary app because of the license. In React Native context, choosing LGPL is nonsense; source code is always bundled into the resulting app, and thus replacing the licensed part is impractical for users, especially for closed-source apps. It's just equivalent to GPL here. Unless you strongly want downstream apps using your library to be also licensed under GPL, I'd recommend MPL which achieves file-by-file copyleft.
(BTW IANAL)
Your implementation looks awesome! But we're not allowed to use it for our proprietary app because of the license. In React Native context, choosing LGPL is nonsense; source code is always bundled into the resulting app, and thus replacing the licensed part is impractical for users, especially for closed-source apps. It's just equivalent to GPL here. Unless you strongly want downstream apps using your library to be also licensed under GPL, I'd recommend MPL which achieves file-by-file copyleft.
(BTW IANAL)