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
-
- Object
- Listenable
- ListNotifier
- SintController
- GrowthBookService
Constructors
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
callbackafterrxstops changing forduration. Useful for search-as-you-type, form validation, etc.inherited -
dispose(
) → void -
inherited
-
ever<
T> (RxInterface< T> rx, void callback(T)) → void -
Calls
callbackevery timerxchanges. 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
callbackat most once perduration, 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
callbackonly the first timerxchanges, 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