3.23.0 - Fix missed events in useFlags

Closes #214

• Fixes flag updates from useFlags
• Fixes flag updates where flagsmith.init is not called

3.22.1 - Support fallback for non-JSON evaluations

Merges #213, thanks to @levrik

3.22.0 - Prevent race condition between identify/getFlags

Prior to this release, clients that request identified/unidentified flags simultaneously could see the wrong results due to a race condition. Although this signifies incorrect usage of the SDK, this will no longer occur.

For more information see #205.

3.19.0 - Access Flagsmith loading state

This introduces a strategy to responding to loading state changes in flagsmith

The following will be exposed to Flagsmith:

export declare enum FlagSource {
    "NONE" = "NONE",
    "DEFAULT_FLAGS" = "DEFAULT_FLAGS",
    "CACHE" = "CACHE",
    "SERVER" = "SERVER",
}

export declare type LoadingState = {
    error: Error | null, // Current error, resets on next attempt to fetch flags
    isFetching: bool, // Whether there is a current request to fetch server flags
    isLoading: bool,  // Whether any flag data exists
    source: FlagSource //Indicates freshness of flags
}

It can be consumed via the onChange function of flagsmith.init or the newly introduced useFlagsmithLoading

    onChange?: (previousFlags: IFlags<F> | null, params: IRetrieveInfo, loadingState:LoadingState) => void;
    const loadingState:LoadingState = useFlagsmithLoading()

3.18.4 - Audit fix

This version includes an npm audit fix.

3.18.3 - Ignore undefined traits

Closes #167

3.18.2 - Adds Datadog RUM

This release adds an integration to Datadog RUM, it focuses on the new experimental feature_flags feature, you can read more about it here https://docs.datadoghq.com/real_user_monitoring/guide/setup-feature-flag-data-collection/?tab=npm.

This will track remote config and feature enabled states as feature flags in the following format

flagsmith_value_<FEATURE_NAME> // remote config
flagsmith_enabled_<FEATURE_NAME> // enabled state

Additionally, the integration will also store Flagsmith traits against the Datadog user in the following format:

flagsmith_trait_<FEATURE_NAME> // remote config

You can find an example of this integration here.

3.18.1 - Realtime features

This release adds a stable implementation of realtime features and is used on app.flagsmith.com.

Flagsmith projects that are opted into realtime are able to enable realtime within flagsmith.init as {realtime: true}, this will instruct the SDK to connect to our realtime SSE endpoint to receive feature updates from the environment and segment overrides.

3.16.0 - Always send an Error object to onError

Closes #93. This aims to make the type of onError more predictable by always sending it as an Error object. Thank you to @gfrancischini for the sensible suggestion!

3.15.1 - Fix Promise return from setTrait(s)

Prior to this release, setTrait(s) calls were not returning a promise, they will now resolve when the API returns a new set of flags.