If async-storage or expo-file-system is not installed, the SDK will fallback to persistence: memory and log a warning

[marandaneto]

Problem

If you install the PH SDK in a clean sample app and run yarn test, the test will fail because the PH SDK needs the storage libs but they aren't available for other targets than Android and iOS.
The only option is to mock the libs or set the persistence to memory, both are not great as a first experience when using our SDK so it's better to use a fallback instead of throwing an error and letting the user figure it out.

Fixes #143

Changes

SDK fallback to persistence: memory if storage libs aren't installed.
Added a test but it failed because of facebook/react-native#35701 so I removed it, I tested the code at runtime though.

Release info Sub-libraries affected

Bump level

• Major
• Minor
• Patch

Libraries affected

• All of them
• posthog-web
• posthog-node
• posthog-react-native

Changelog notes

• Added support for X

[benjackwhite]

I really don't like this solution but I can't think of a better one so lets do it 😅

[marandaneto]

I really don't like this solution but I can't think of a better one so lets do it 😅

Same 😅