GrowthBookService class

Simplified GrowthBook feature flag service.

In the TS original this uses the GrowthBook SDK with remote eval. Here we provide an interface that reads from a cached config and supports disk fallback.

Inheritance

Constructors

GrowthBookService()

Properties

hashCode int
The hash code for this object.
no setterinherited
initialized bool
Checks whether the controller has already been initialized.
no setterinherited
isClosed bool
Checks whether the controller has already been closed.
no setterinherited
isDisposed bool
no setterinherited
listenersLength int
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited

Methods

addListener(SintStateUpdate listener) → Disposer
Register a closure to be called when the object notifies its listeners.
inherited
addListenerId(Object? key, SintStateUpdate listener) → Disposer
inherited
checkFeatureGateCached(String featureKey) bool
Check if a feature gate is enabled (cached, may be stale).
clearConfigOverrides() → void
Clear all config overrides.
containsListener(SintStateUpdate listener) bool
inherited
debounce<T>(RxInterface<T> rx, void callback(T), {Duration duration = const Duration(milliseconds: 400)}) → void
Calls callback after rx stops changing for duration. Useful for search-as-you-type, form validation, etc.
inherited
dispose() → void
inherited
ever<T>(RxInterface<T> rx, void callback(T)) → void
Calls callback every time rx changes. Auto-cancels on controller disposal.
inherited
getAllFeatures() Map<String, Object?>
Get all known features and their current values.
getDynamicConfigCached<T>(String configKey, T defaultValue) → T
Get a dynamic config value (cached, may be stale).
getExperimentData(String feature) GrowthBookExperimentData?
Get experiment data for a feature (for exposure logging).
getFeatureValueCached<T>(String featureKey, T defaultValue) → T
Get a typed feature value (cached, may be stale).
hasEnvOverride(String feature) bool
Check if a feature has an env override.
interval<T>(RxInterface<T> rx, void callback(T), {Duration duration = const Duration(seconds: 1)}) → void
Calls callback at most once per duration, ignoring intermediate changes. Useful for rate-limiting UI updates.
inherited
loadDiskCache(Map<String, Object?> cache) → void
Load disk cache.
logExposure(String feature, void logger(GrowthBookExperimentData)) → void
Log exposure for a feature (deduped within session).
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
once<T>(RxInterface<T> rx, void callback(T)) → void
Calls callback only the first time rx changes, then cancels.
inherited
onClose() → void
Called before onDelete method. onClose might be used to dispose resources used by the controller. Like closing events, or streams before the controller is destroyed. Or dispose objects that can potentially create some memory leaks, like TextEditingControllers, AnimationControllers. Might be useful as well to persist some data on disk.
inherited
onDelete() → void
inherited
onInit() → void
Called immediately after the widget is allocated in memory. You might use this to initialize something for the controller.
inherited
onReady() → void
Called 1 frame after onInit(). It is the perfect place to enter navigation events, like snackbar, dialogs, or a new route, or async request.
inherited
onRefresh(void listener()) → void Function()
Register a refresh listener. Returns an unsubscribe function.
onStart() → void
Called at the exact moment the widget is allocated in memory. It uses an internal "callable" type, to avoid any @overrides in subclasses. This method should be internal and is required to define the lifetime cycle of the subclass.
inherited
refresh() → void
inherited
refreshGroup(Object id) → void
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that the object notifies.
inherited
removeListenerId(Object id, VoidCallback listener) → void
inherited
reportAdd(VoidCallback disposer) → void
inherited
reportRead() → void
inherited
setAllFeatureValues(Map<String, Object?> values) → void
Set all feature values from a remote eval payload.
setConfigOverride(String feature, Object? value) → void
Set or clear a single config override.
setEnvOverrides(Map<String, Object?> overrides) → void
Set env var overrides (typically from MAGE_INTERNAL_FC_OVERRIDES).
setExperimentData(String feature, GrowthBookExperimentData data) → void
Store experiment data for a feature.
setFeatureValue(String featureKey, Object? value) → void
Set a feature value (for testing or remote eval results).
toString() String
A string representation of this object.
inherited
update([List<Object>? ids, bool condition = true]) → void
Notifies listeners to update the UI.
inherited

Operators

operator ==(Object other) bool
The equality operator.
inherited