@metamask/remote-feature-flag-controller - npm Package Compare versions

Comparing version 4.1.0 to 4.2.0

dist/remote-feature-flag-controller-method-action-types.cjs

+"use strict";
+/**
+ * This file is auto generated.
+ * Do not edit manually.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+//# sourceMappingURL=remote-feature-flag-controller-method-action-types.cjs.map

dist/remote-featur...-controller-method-action-types.cjs.map

+{"version":3,"file":"remote-feature-flag-controller-method-action-types.cjs","sourceRoot":"","sources":["../src/remote-feature-flag-controller-method-action-types.ts"],"names":[],"mappings":";AAAA;;;GAGG","sourcesContent":["/**\n * This file is auto generated.\n * Do not edit manually.\n */\n\nimport type { RemoteFeatureFlagController } from './remote-feature-flag-controller';\n\n/**\n * Retrieves the remote feature flags, fetching from the API if necessary.\n * Uses caching to prevent redundant API calls and handles concurrent fetches.\n *\n * @returns A promise that resolves to the current set of feature flags.\n */\nexport type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {\n  type: `RemoteFeatureFlagController:updateRemoteFeatureFlags`;\n  handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];\n};\n\n/**\n * Enables the controller, allowing it to make network requests.\n */\nexport type RemoteFeatureFlagControllerEnableAction = {\n  type: `RemoteFeatureFlagController:enable`;\n  handler: RemoteFeatureFlagController['enable'];\n};\n\n/**\n * Disables the controller, preventing it from making network requests.\n */\nexport type RemoteFeatureFlagControllerDisableAction = {\n  type: `RemoteFeatureFlagController:disable`;\n  handler: RemoteFeatureFlagController['disable'];\n};\n\n/**\n * Sets a local override for a specific feature flag.\n *\n * @param flagName - The name of the feature flag to override.\n * @param value - The override value for the feature flag.\n */\nexport type RemoteFeatureFlagControllerSetFlagOverrideAction = {\n  type: `RemoteFeatureFlagController:setFlagOverride`;\n  handler: RemoteFeatureFlagController['setFlagOverride'];\n};\n\n/**\n * Clears the local override for a specific feature flag.\n *\n * @param flagName - The name of the feature flag to clear.\n */\nexport type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {\n  type: `RemoteFeatureFlagController:removeFlagOverride`;\n  handler: RemoteFeatureFlagController['removeFlagOverride'];\n};\n\n/**\n * Clears all local feature flag overrides.\n */\nexport type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {\n  type: `RemoteFeatureFlagController:clearAllFlagOverrides`;\n  handler: RemoteFeatureFlagController['clearAllFlagOverrides'];\n};\n\n/**\n * Union of all RemoteFeatureFlagController action types.\n */\nexport type RemoteFeatureFlagControllerMethodActions =\n  | RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction\n  | RemoteFeatureFlagControllerEnableAction\n  | RemoteFeatureFlagControllerDisableAction\n  | RemoteFeatureFlagControllerSetFlagOverrideAction\n  | RemoteFeatureFlagControllerRemoveFlagOverrideAction\n  | RemoteFeatureFlagControllerClearAllFlagOverridesAction;\n"]}

dist/remote-featur...ag-controller-method-action-types.d.cts

+/**
+ * This file is auto generated.
+ * Do not edit manually.
+ */
+import type { RemoteFeatureFlagController } from "./remote-feature-flag-controller.cjs";
+/**
+ * Retrieves the remote feature flags, fetching from the API if necessary.
+ * Uses caching to prevent redundant API calls and handles concurrent fetches.
+ *
+ * @returns A promise that resolves to the current set of feature flags.
+ */
+export type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {
+    type: `RemoteFeatureFlagController:updateRemoteFeatureFlags`;
+    handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];
+};
+/**
+ * Enables the controller, allowing it to make network requests.
+ */
+export type RemoteFeatureFlagControllerEnableAction = {
+    type: `RemoteFeatureFlagController:enable`;
+    handler: RemoteFeatureFlagController['enable'];
+};
+/**
+ * Disables the controller, preventing it from making network requests.
+ */
+export type RemoteFeatureFlagControllerDisableAction = {
+    type: `RemoteFeatureFlagController:disable`;
+    handler: RemoteFeatureFlagController['disable'];
+};
+/**
+ * Sets a local override for a specific feature flag.
+ *
+ * @param flagName - The name of the feature flag to override.
+ * @param value - The override value for the feature flag.
+ */
+export type RemoteFeatureFlagControllerSetFlagOverrideAction = {
+    type: `RemoteFeatureFlagController:setFlagOverride`;
+    handler: RemoteFeatureFlagController['setFlagOverride'];
+};
+/**
+ * Clears the local override for a specific feature flag.
+ *
+ * @param flagName - The name of the feature flag to clear.
+ */
+export type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {
+    type: `RemoteFeatureFlagController:removeFlagOverride`;
+    handler: RemoteFeatureFlagController['removeFlagOverride'];
+};
+/**
+ * Clears all local feature flag overrides.
+ */
+export type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {
+    type: `RemoteFeatureFlagController:clearAllFlagOverrides`;
+    handler: RemoteFeatureFlagController['clearAllFlagOverrides'];
+};
+/**
+ * Union of all RemoteFeatureFlagController action types.
+ */
+export type RemoteFeatureFlagControllerMethodActions = RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction | RemoteFeatureFlagControllerEnableAction | RemoteFeatureFlagControllerDisableAction | RemoteFeatureFlagControllerSetFlagOverrideAction | RemoteFeatureFlagControllerRemoveFlagOverrideAction | RemoteFeatureFlagControllerClearAllFlagOverridesAction;
+//# sourceMappingURL=remote-feature-flag-controller-method-action-types.d.cts.map

dist/remote-featur...ontroller-method-action-types.d.cts.map

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dist/remote-featur...ag-controller-method-action-types.d.mts

+/**
+ * This file is auto generated.
+ * Do not edit manually.
+ */
+import type { RemoteFeatureFlagController } from "./remote-feature-flag-controller.mjs";
+/**
+ * Retrieves the remote feature flags, fetching from the API if necessary.
+ * Uses caching to prevent redundant API calls and handles concurrent fetches.
+ *
+ * @returns A promise that resolves to the current set of feature flags.
+ */
+export type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {
+    type: `RemoteFeatureFlagController:updateRemoteFeatureFlags`;
+    handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];
+};
+/**
+ * Enables the controller, allowing it to make network requests.
+ */
+export type RemoteFeatureFlagControllerEnableAction = {
+    type: `RemoteFeatureFlagController:enable`;
+    handler: RemoteFeatureFlagController['enable'];
+};
+/**
+ * Disables the controller, preventing it from making network requests.
+ */
+export type RemoteFeatureFlagControllerDisableAction = {
+    type: `RemoteFeatureFlagController:disable`;
+    handler: RemoteFeatureFlagController['disable'];
+};
+/**
+ * Sets a local override for a specific feature flag.
+ *
+ * @param flagName - The name of the feature flag to override.
+ * @param value - The override value for the feature flag.
+ */
+export type RemoteFeatureFlagControllerSetFlagOverrideAction = {
+    type: `RemoteFeatureFlagController:setFlagOverride`;
+    handler: RemoteFeatureFlagController['setFlagOverride'];
+};
+/**
+ * Clears the local override for a specific feature flag.
+ *
+ * @param flagName - The name of the feature flag to clear.
+ */
+export type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {
+    type: `RemoteFeatureFlagController:removeFlagOverride`;
+    handler: RemoteFeatureFlagController['removeFlagOverride'];
+};
+/**
+ * Clears all local feature flag overrides.
+ */
+export type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {
+    type: `RemoteFeatureFlagController:clearAllFlagOverrides`;
+    handler: RemoteFeatureFlagController['clearAllFlagOverrides'];
+};
+/**
+ * Union of all RemoteFeatureFlagController action types.
+ */
+export type RemoteFeatureFlagControllerMethodActions = RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction | RemoteFeatureFlagControllerEnableAction | RemoteFeatureFlagControllerDisableAction | RemoteFeatureFlagControllerSetFlagOverrideAction | RemoteFeatureFlagControllerRemoveFlagOverrideAction | RemoteFeatureFlagControllerClearAllFlagOverridesAction;
+//# sourceMappingURL=remote-feature-flag-controller-method-action-types.d.mts.map

dist/remote-featur...ontroller-method-action-types.d.mts.map

+{"version":3,"file":"remote-feature-flag-controller-method-action-types.d.mts","sourceRoot":"","sources":["../src/remote-feature-flag-controller-method-action-types.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAEH,OAAO,KAAK,EAAE,2BAA2B,EAAE,6CAAyC;AAEpF;;;;;GAKG;AACH,MAAM,MAAM,yDAAyD,GAAG;IACtE,IAAI,EAAE,sDAAsD,CAAC;IAC7D,OAAO,EAAE,2BAA2B,CAAC,0BAA0B,CAAC,CAAC;CAClE,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,uCAAuC,GAAG;IACpD,IAAI,EAAE,oCAAoC,CAAC;IAC3C,OAAO,EAAE,2BAA2B,CAAC,QAAQ,CAAC,CAAC;CAChD,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,wCAAwC,GAAG;IACrD,IAAI,EAAE,qCAAqC,CAAC;IAC5C,OAAO,EAAE,2BAA2B,CAAC,SAAS,CAAC,CAAC;CACjD,CAAC;AAEF;;;;;GAKG;AACH,MAAM,MAAM,gDAAgD,GAAG;IAC7D,IAAI,EAAE,6CAA6C,CAAC;IACpD,OAAO,EAAE,2BAA2B,CAAC,iBAAiB,CAAC,CAAC;CACzD,CAAC;AAEF;;;;GAIG;AACH,MAAM,MAAM,mDAAmD,GAAG;IAChE,IAAI,EAAE,gDAAgD,CAAC;IACvD,OAAO,EAAE,2BAA2B,CAAC,oBAAoB,CAAC,CAAC;CAC5D,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,sDAAsD,GAAG;IACnE,IAAI,EAAE,mDAAmD,CAAC;IAC1D,OAAO,EAAE,2BAA2B,CAAC,uBAAuB,CAAC,CAAC;CAC/D,CAAC;AAEF;;GAEG;AACH,MAAM,MAAM,wCAAwC,GAChD,yDAAyD,GACzD,uCAAuC,GACvC,wCAAwC,GACxC,gDAAgD,GAChD,mDAAmD,GACnD,sDAAsD,CAAC"}

dist/remote-feature-flag-controller-method-action-types.mjs

+/**
+ * This file is auto generated.
+ * Do not edit manually.
+ */
+export {};
+//# sourceMappingURL=remote-feature-flag-controller-method-action-types.mjs.map

dist/remote-featur...-controller-method-action-types.mjs.map

+{"version":3,"file":"remote-feature-flag-controller-method-action-types.mjs","sourceRoot":"","sources":["../src/remote-feature-flag-controller-method-action-types.ts"],"names":[],"mappings":"AAAA;;;GAGG","sourcesContent":["/**\n * This file is auto generated.\n * Do not edit manually.\n */\n\nimport type { RemoteFeatureFlagController } from './remote-feature-flag-controller';\n\n/**\n * Retrieves the remote feature flags, fetching from the API if necessary.\n * Uses caching to prevent redundant API calls and handles concurrent fetches.\n *\n * @returns A promise that resolves to the current set of feature flags.\n */\nexport type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {\n  type: `RemoteFeatureFlagController:updateRemoteFeatureFlags`;\n  handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];\n};\n\n/**\n * Enables the controller, allowing it to make network requests.\n */\nexport type RemoteFeatureFlagControllerEnableAction = {\n  type: `RemoteFeatureFlagController:enable`;\n  handler: RemoteFeatureFlagController['enable'];\n};\n\n/**\n * Disables the controller, preventing it from making network requests.\n */\nexport type RemoteFeatureFlagControllerDisableAction = {\n  type: `RemoteFeatureFlagController:disable`;\n  handler: RemoteFeatureFlagController['disable'];\n};\n\n/**\n * Sets a local override for a specific feature flag.\n *\n * @param flagName - The name of the feature flag to override.\n * @param value - The override value for the feature flag.\n */\nexport type RemoteFeatureFlagControllerSetFlagOverrideAction = {\n  type: `RemoteFeatureFlagController:setFlagOverride`;\n  handler: RemoteFeatureFlagController['setFlagOverride'];\n};\n\n/**\n * Clears the local override for a specific feature flag.\n *\n * @param flagName - The name of the feature flag to clear.\n */\nexport type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {\n  type: `RemoteFeatureFlagController:removeFlagOverride`;\n  handler: RemoteFeatureFlagController['removeFlagOverride'];\n};\n\n/**\n * Clears all local feature flag overrides.\n */\nexport type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {\n  type: `RemoteFeatureFlagController:clearAllFlagOverrides`;\n  handler: RemoteFeatureFlagController['clearAllFlagOverrides'];\n};\n\n/**\n * Union of all RemoteFeatureFlagController action types.\n */\nexport type RemoteFeatureFlagControllerMethodActions =\n  | RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction\n  | RemoteFeatureFlagControllerEnableAction\n  | RemoteFeatureFlagControllerDisableAction\n  | RemoteFeatureFlagControllerSetFlagOverrideAction\n  | RemoteFeatureFlagControllerRemoveFlagOverrideAction\n  | RemoteFeatureFlagControllerClearAllFlagOverridesAction;\n"]}

CHANGELOG.md

@@ -10,2 +10,17 @@ # Changelog
 
+## [4.2.0]
+
+### Added
+
+- Expose missing public `RemoteFeatureFlagController` methods through its messenger ([#8161](https://github.com/MetaMask/core/pull/8161))
+  - The following actions are now available:
+    - `RemoteFeatureFlagController:enable`
+    - `RemoteFeatureFlagController:disable`
+  - Corresponding action types (e.g. `RemoteFeatureFlagControllerEnableAction`) are available as well.
+
+### Changed
+
+- Bump `@metamask/base-controller` from `^9.0.0` to `^9.0.1` ([#8317](https://github.com/MetaMask/core/pull/8317))
+- Bump `@metamask/messenger` from `^0.3.0` to `^1.0.0` ([#8317](https://github.com/MetaMask/core/pull/8317))
+
 ## [4.1.0]
@@ -192,3 +207,4 @@
 
-[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@4.1.0...HEAD
+[Unreleased]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@4.2.0...HEAD
+[4.2.0]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@4.1.0...@metamask/remote-feature-flag-controller@4.2.0
 [4.1.0]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@4.0.0...@metamask/remote-feature-flag-controller@4.1.0
@@ -195,0 +211,0 @@ [4.0.0]: https://github.com/MetaMask/core/compare/@metamask/remote-feature-flag-controller@3.1.0...@metamask/remote-feature-flag-controller@4.0.0

dist/index.cjs.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.cjs","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";;;AAAA,uFAA+E;AAAtE,6IAAA,2BAA2B,OAAA;AAapC,mGAIgD;AAH9C,kIAAA,UAAU,OAAA;AACV,wIAAA,gBAAgB,OAAA;AAChB,uIAAA,eAAe,OAAA;AAIjB,uGAA+F;AAAtF,mIAAA,sBAAsB,OAAA;AAC/B,+EAAoF;AAA3E,4IAAA,iCAAiC,OAAA","sourcesContent":["export { RemoteFeatureFlagController } from './remote-feature-flag-controller';\nexport type {\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerGetStateAction,\n  RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction,\n  RemoteFeatureFlagControllerSetFlagOverrideAction,\n  RemoteFeatureFlagControllerRemoveFlagOverrideAction,\n  RemoteFeatureFlagControllerClearAllFlagOverridesAction,\n  RemoteFeatureFlagControllerEvents,\n  RemoteFeatureFlagControllerStateChangeEvent,\n} from './remote-feature-flag-controller';\nexport {\n  ClientType,\n  DistributionType,\n  EnvironmentType,\n} from './remote-feature-flag-controller-types';\n\nexport type { FeatureFlags } from './remote-feature-flag-controller-types';\nexport { ClientConfigApiService } from './client-config-api-service/client-config-api-service';\nexport { generateDeterministicRandomNumber } from './utils/user-segmentation-utils';\n"]}
+{"version":3,"file":"index.cjs","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":";;;AAAA,uFAA+E;AAAtE,6IAAA,2BAA2B,OAAA;AAkBpC,mGAIgD;AAH9C,kIAAA,UAAU,OAAA;AACV,wIAAA,gBAAgB,OAAA;AAChB,uIAAA,eAAe,OAAA;AAIjB,uGAA+F;AAAtF,mIAAA,sBAAsB,OAAA;AAC/B,+EAAoF;AAA3E,4IAAA,iCAAiC,OAAA","sourcesContent":["export { RemoteFeatureFlagController } from './remote-feature-flag-controller';\nexport type {\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerGetStateAction,\n  RemoteFeatureFlagControllerEvents,\n  RemoteFeatureFlagControllerStateChangeEvent,\n} from './remote-feature-flag-controller';\nexport type {\n  RemoteFeatureFlagControllerClearAllFlagOverridesAction,\n  RemoteFeatureFlagControllerDisableAction,\n  RemoteFeatureFlagControllerEnableAction,\n  RemoteFeatureFlagControllerMethodActions,\n  RemoteFeatureFlagControllerRemoveFlagOverrideAction,\n  RemoteFeatureFlagControllerSetFlagOverrideAction,\n  RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction,\n} from './remote-feature-flag-controller-method-action-types';\nexport {\n  ClientType,\n  DistributionType,\n  EnvironmentType,\n} from './remote-feature-flag-controller-types';\n\nexport type { FeatureFlags } from './remote-feature-flag-controller-types';\nexport { ClientConfigApiService } from './client-config-api-service/client-config-api-service';\nexport { generateDeterministicRandomNumber } from './utils/user-segmentation-utils';\n"]}

dist/index.d.cts

 export { RemoteFeatureFlagController } from "./remote-feature-flag-controller.cjs";
-export type { RemoteFeatureFlagControllerState, RemoteFeatureFlagControllerMessenger, RemoteFeatureFlagControllerActions, RemoteFeatureFlagControllerGetStateAction, RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction, RemoteFeatureFlagControllerSetFlagOverrideAction, RemoteFeatureFlagControllerRemoveFlagOverrideAction, RemoteFeatureFlagControllerClearAllFlagOverridesAction, RemoteFeatureFlagControllerEvents, RemoteFeatureFlagControllerStateChangeEvent, } from "./remote-feature-flag-controller.cjs";
+export type { RemoteFeatureFlagControllerState, RemoteFeatureFlagControllerMessenger, RemoteFeatureFlagControllerActions, RemoteFeatureFlagControllerGetStateAction, RemoteFeatureFlagControllerEvents, RemoteFeatureFlagControllerStateChangeEvent, } from "./remote-feature-flag-controller.cjs";
+export type { RemoteFeatureFlagControllerClearAllFlagOverridesAction, RemoteFeatureFlagControllerDisableAction, RemoteFeatureFlagControllerEnableAction, RemoteFeatureFlagControllerMethodActions, RemoteFeatureFlagControllerRemoveFlagOverrideAction, RemoteFeatureFlagControllerSetFlagOverrideAction, RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction, } from "./remote-feature-flag-controller-method-action-types.cjs";
 export { ClientType, DistributionType, EnvironmentType, } from "./remote-feature-flag-controller-types.cjs";
@@ -4,0 +5,0 @@ export type { FeatureFlags } from "./remote-feature-flag-controller-types.cjs";

dist/index.d.cts.map

@@ -1,1 +0,1 @@
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dist/index.d.mts

 export { RemoteFeatureFlagController } from "./remote-feature-flag-controller.mjs";
-export type { RemoteFeatureFlagControllerState, RemoteFeatureFlagControllerMessenger, RemoteFeatureFlagControllerActions, RemoteFeatureFlagControllerGetStateAction, RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction, RemoteFeatureFlagControllerSetFlagOverrideAction, RemoteFeatureFlagControllerRemoveFlagOverrideAction, RemoteFeatureFlagControllerClearAllFlagOverridesAction, RemoteFeatureFlagControllerEvents, RemoteFeatureFlagControllerStateChangeEvent, } from "./remote-feature-flag-controller.mjs";
+export type { RemoteFeatureFlagControllerState, RemoteFeatureFlagControllerMessenger, RemoteFeatureFlagControllerActions, RemoteFeatureFlagControllerGetStateAction, RemoteFeatureFlagControllerEvents, RemoteFeatureFlagControllerStateChangeEvent, } from "./remote-feature-flag-controller.mjs";
+export type { RemoteFeatureFlagControllerClearAllFlagOverridesAction, RemoteFeatureFlagControllerDisableAction, RemoteFeatureFlagControllerEnableAction, RemoteFeatureFlagControllerMethodActions, RemoteFeatureFlagControllerRemoveFlagOverrideAction, RemoteFeatureFlagControllerSetFlagOverrideAction, RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction, } from "./remote-feature-flag-controller-method-action-types.mjs";
 export { ClientType, DistributionType, EnvironmentType, } from "./remote-feature-flag-controller-types.mjs";
@@ -4,0 +5,0 @@ export type { FeatureFlags } from "./remote-feature-flag-controller-types.mjs";

dist/index.d.mts.map

@@ -1,1 +0,1 @@
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dist/index.mjs.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"index.mjs","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,2BAA2B,EAAE,6CAAyC;AAa/E,OAAO,EACL,UAAU,EACV,gBAAgB,EAChB,eAAe,EAChB,mDAA+C;AAGhD,OAAO,EAAE,sBAAsB,EAAE,kEAA8D;AAC/F,OAAO,EAAE,iCAAiC,EAAE,4CAAwC","sourcesContent":["export { RemoteFeatureFlagController } from './remote-feature-flag-controller';\nexport type {\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerGetStateAction,\n  RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction,\n  RemoteFeatureFlagControllerSetFlagOverrideAction,\n  RemoteFeatureFlagControllerRemoveFlagOverrideAction,\n  RemoteFeatureFlagControllerClearAllFlagOverridesAction,\n  RemoteFeatureFlagControllerEvents,\n  RemoteFeatureFlagControllerStateChangeEvent,\n} from './remote-feature-flag-controller';\nexport {\n  ClientType,\n  DistributionType,\n  EnvironmentType,\n} from './remote-feature-flag-controller-types';\n\nexport type { FeatureFlags } from './remote-feature-flag-controller-types';\nexport { ClientConfigApiService } from './client-config-api-service/client-config-api-service';\nexport { generateDeterministicRandomNumber } from './utils/user-segmentation-utils';\n"]}
+{"version":3,"file":"index.mjs","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,2BAA2B,EAAE,6CAAyC;AAkB/E,OAAO,EACL,UAAU,EACV,gBAAgB,EAChB,eAAe,EAChB,mDAA+C;AAGhD,OAAO,EAAE,sBAAsB,EAAE,kEAA8D;AAC/F,OAAO,EAAE,iCAAiC,EAAE,4CAAwC","sourcesContent":["export { RemoteFeatureFlagController } from './remote-feature-flag-controller';\nexport type {\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerGetStateAction,\n  RemoteFeatureFlagControllerEvents,\n  RemoteFeatureFlagControllerStateChangeEvent,\n} from './remote-feature-flag-controller';\nexport type {\n  RemoteFeatureFlagControllerClearAllFlagOverridesAction,\n  RemoteFeatureFlagControllerDisableAction,\n  RemoteFeatureFlagControllerEnableAction,\n  RemoteFeatureFlagControllerMethodActions,\n  RemoteFeatureFlagControllerRemoveFlagOverrideAction,\n  RemoteFeatureFlagControllerSetFlagOverrideAction,\n  RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction,\n} from './remote-feature-flag-controller-method-action-types';\nexport {\n  ClientType,\n  DistributionType,\n  EnvironmentType,\n} from './remote-feature-flag-controller-types';\n\nexport type { FeatureFlags } from './remote-feature-flag-controller-types';\nexport { ClientConfigApiService } from './client-config-api-service/client-config-api-service';\nexport { generateDeterministicRandomNumber } from './utils/user-segmentation-utils';\n"]}

dist/remote-feature-flag-controller.cjs

@@ -55,2 +55,11 @@ "use strict";
 };
+// === MESSENGER ===
+const MESSENGER_EXPOSED_METHODS = [
+    'clearAllFlagOverrides',
+    'disable',
+    'enable',
+    'removeFlagOverride',
+    'setFlagOverride',
+    'updateRemoteFeatureFlags',
+];
 /**
@@ -123,2 +132,3 @@ * Returns the default state for the RemoteFeatureFlagController.
         __classPrivateFieldSet(this, _RemoteFeatureFlagController_clientVersion, clientVersion, "f");
+        this.messenger.registerMethodActionHandlers(this, MESSENGER_EXPOSED_METHODS);
     }
@@ -125,0 +135,0 @@ /**

dist/remote-feature-flag-controller.cjs.map

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{ BaseController } from '@metamask/base-controller';\nimport type {\n  ControllerGetStateAction,\n  ControllerStateChangeEvent,\n} from '@metamask/base-controller';\nimport type { Messenger } from '@metamask/messenger';\nimport { isValidSemVerVersion } from '@metamask/utils';\nimport type { Json, SemVerVersion } from '@metamask/utils';\n\nimport type { AbstractClientConfigApiService } from './client-config-api-service/abstract-client-config-api-service';\nimport type {\n  FeatureFlags,\n  ServiceResponse,\n  FeatureFlagScopeValue,\n} from './remote-feature-flag-controller-types';\nimport {\n  calculateThresholdForFlag,\n  isFeatureFlagWithScopeValue,\n} from './utils/user-segmentation-utils';\nimport { isVersionFeatureFlag, getVersionData } from './utils/version';\n\n// === GENERAL ===\n\nexport const controllerName = 'RemoteFeatureFlagController';\nexport const DEFAULT_CACHE_DURATION = 24 * 60 * 60 * 1000; // 1 day\n\n// === STATE ===\n\nexport type RemoteFeatureFlagControllerState = {\n  remoteFeatureFlags: FeatureFlags;\n  localOverrides?: FeatureFlags;\n  rawRemoteFeatureFlags?: FeatureFlags;\n  cacheTimestamp: number;\n  thresholdCache?: Record<string, number>;\n};\n\nconst remoteFeatureFlagControllerMetadata = {\n  remoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  localOverrides: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  rawRemoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  cacheTimestamp: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  thresholdCache: {\n    includeInStateLogs: false,\n    persist: true,\n    includeInDebugSnapshot: false,\n    usedInUi: false,\n  },\n};\n\n// === MESSENGER ===\n\n/**\n * The action to retrieve the state of the {@link RemoteFeatureFlagController}.\n */\nexport type RemoteFeatureFlagControllerGetStateAction =\n  ControllerGetStateAction<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {\n  type: `${typeof controllerName}:updateRemoteFeatureFlags`;\n  handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];\n};\n\nexport type RemoteFeatureFlagControllerSetFlagOverrideAction = {\n  type: `${typeof controllerName}:setFlagOverride`;\n  handler: RemoteFeatureFlagController['setFlagOverride'];\n};\n\nexport type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {\n  type: `${typeof controllerName}:removeFlagOverride`;\n  handler: RemoteFeatureFlagController['removeFlagOverride'];\n};\n\nexport type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {\n  type: `${typeof controllerName}:clearAllFlagOverrides`;\n  handler: RemoteFeatureFlagController['clearAllFlagOverrides'];\n};\n\nexport type RemoteFeatureFlagControllerActions =\n  | RemoteFeatureFlagControllerGetStateAction\n  | RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction\n  | RemoteFeatureFlagControllerSetFlagOverrideAction\n  | RemoteFeatureFlagControllerRemoveFlagOverrideAction\n  | RemoteFeatureFlagControllerClearAllFlagOverridesAction;\n\nexport type RemoteFeatureFlagControllerStateChangeEvent =\n  ControllerStateChangeEvent<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerEvents =\n  RemoteFeatureFlagControllerStateChangeEvent;\n\nexport type RemoteFeatureFlagControllerMessenger = Messenger<\n  typeof controllerName,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerEvents\n>;\n\n/**\n * Returns the default state for the RemoteFeatureFlagController.\n *\n * @returns The default controller state.\n */\nexport function getDefaultRemoteFeatureFlagControllerState(): RemoteFeatureFlagControllerState {\n  return {\n    remoteFeatureFlags: {},\n    localOverrides: {},\n    rawRemoteFeatureFlags: {},\n    cacheTimestamp: 0,\n  };\n}\n\n/**\n * The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags.\n * It fetches feature flags from a remote API, caches them, and provides methods to access\n * and manage these flags. The controller ensures that feature flags are refreshed based on\n * a specified interval and handles cases where the controller is disabled or the network is unavailable.\n */\nexport class RemoteFeatureFlagController extends BaseController<\n  typeof controllerName,\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger\n> {\n  readonly #fetchInterval: number;\n\n  #disabled: boolean;\n\n  readonly #clientConfigApiService: AbstractClientConfigApiService;\n\n  #inProgressFlagUpdate?: Promise<ServiceResponse>;\n\n  readonly #getMetaMetricsId: () => string;\n\n  readonly #clientVersion: SemVerVersion;\n\n  /**\n   * Constructs a new RemoteFeatureFlagController instance.\n   *\n   * @param options - The controller options.\n   * @param options.messenger - The messenger used for communication.\n   * @param options.state - The initial state of the controller.\n   * @param options.clientConfigApiService - The service instance to fetch remote feature flags.\n   * @param options.fetchInterval - The interval in milliseconds before cached flags expire. Defaults to 1 day.\n   * @param options.disabled - Determines if the controller should be disabled initially. Defaults to false.\n   * @param options.getMetaMetricsId - Returns metaMetricsId.\n   * @param options.clientVersion - The current client version for version-based feature flag filtering. Must be a valid 3-part SemVer version string.\n   * @param options.prevClientVersion - The previous client version for feature flag cache invalidation.\n   */\n  constructor({\n    messenger,\n    state,\n    clientConfigApiService,\n    fetchInterval = DEFAULT_CACHE_DURATION,\n    disabled = false,\n    getMetaMetricsId,\n    clientVersion,\n    prevClientVersion,\n  }: {\n    messenger: RemoteFeatureFlagControllerMessenger;\n    state?: Partial<RemoteFeatureFlagControllerState>;\n    clientConfigApiService: AbstractClientConfigApiService;\n    getMetaMetricsId: () => string;\n    fetchInterval?: number;\n    disabled?: boolean;\n    clientVersion: string;\n    prevClientVersion?: string;\n  }) {\n    if (!isValidSemVerVersion(clientVersion)) {\n      throw new Error(\n        `Invalid clientVersion: \"${clientVersion}\". Must be a valid 3-part SemVer version string`,\n      );\n    }\n\n    const initialState: RemoteFeatureFlagControllerState = {\n      ...getDefaultRemoteFeatureFlagControllerState(),\n      ...state,\n    };\n\n    const hasClientVersionChanged =\n      isValidSemVerVersion(prevClientVersion) &&\n      prevClientVersion !== clientVersion;\n\n    super({\n      name: controllerName,\n      metadata: remoteFeatureFlagControllerMetadata,\n      messenger,\n      state: {\n        ...initialState,\n        cacheTimestamp: hasClientVersionChanged\n          ? 0\n          : initialState.cacheTimestamp,\n      },\n    });\n\n    this.#fetchInterval = fetchInterval;\n    this.#disabled = disabled;\n    this.#clientConfigApiService = clientConfigApiService;\n    this.#getMetaMetricsId = getMetaMetricsId;\n    this.#clientVersion = clientVersion;\n  }\n\n  /**\n   * Checks if the cached feature flags are expired based on the fetch interval.\n   *\n   * @returns Whether the cache is expired (`true`) or still valid (`false`).\n   */\n  #isCacheExpired(): boolean {\n    return Date.now() - this.state.cacheTimestamp > this.#fetchInterval;\n  }\n\n  /**\n   * Retrieves the remote feature flags, fetching from the API if necessary.\n   * Uses caching to prevent redundant API calls and handles concurrent fetches.\n   *\n   * @returns A promise that resolves to the current set of feature flags.\n   */\n  async updateRemoteFeatureFlags(): Promise<void> {\n    if (this.#disabled || !this.#isCacheExpired()) {\n      return;\n    }\n\n    let serverData;\n\n    if (this.#inProgressFlagUpdate) {\n      await this.#inProgressFlagUpdate;\n      return;\n    }\n\n    try {\n      this.#inProgressFlagUpdate =\n        this.#clientConfigApiService.fetchRemoteFeatureFlags();\n\n      serverData = await this.#inProgressFlagUpdate;\n    } finally {\n      this.#inProgressFlagUpdate = undefined;\n    }\n\n    await this.#updateCache(serverData.remoteFeatureFlags);\n  }\n\n  /**\n   * Updates the controller's state with new feature flags and resets the cache timestamp.\n   *\n   * @param remoteFeatureFlags - The new feature flags to cache.\n   */\n  async #updateCache(remoteFeatureFlags: FeatureFlags): Promise<void> {\n    const { processedFlags, thresholdCacheUpdates } =\n      await this.#processRemoteFeatureFlags(remoteFeatureFlags);\n\n    const metaMetricsId = this.#getMetaMetricsId();\n    const currentFlagNames = Object.keys(remoteFeatureFlags);\n\n    // Build updated threshold cache\n    const updatedThresholdCache = { ...(this.state.thresholdCache ?? {}) };\n\n    // Apply new thresholds\n    for (const [cacheKey, threshold] of Object.entries(thresholdCacheUpdates)) {\n      updatedThresholdCache[cacheKey] = threshold;\n    }\n\n    // Clean up stale entries\n    for (const cacheKey of Object.keys(updatedThresholdCache)) {\n      const [cachedMetaMetricsId, ...cachedFlagNameParts] = cacheKey.split(':');\n      const cachedFlagName = cachedFlagNameParts.join(':');\n      if (\n        cachedMetaMetricsId === metaMetricsId &&\n        !currentFlagNames.includes(cachedFlagName)\n      ) {\n        delete updatedThresholdCache[cacheKey];\n      }\n    }\n\n    // Single state update with all changes batched together\n    this.update(() => {\n      return {\n        ...this.state,\n        remoteFeatureFlags: processedFlags,\n        rawRemoteFeatureFlags: remoteFeatureFlags,\n        cacheTimestamp: Date.now(),\n        thresholdCache: updatedThresholdCache,\n      };\n    });\n  }\n\n  /**\n   * Processes a version-based feature flag to get the appropriate value for the current client version.\n   *\n   * @param flagValue - The feature flag value to process\n   * @returns The processed value, or null if no version qualifies (skip this flag)\n   */\n  #processVersionBasedFlag(flagValue: Json): Json | null {\n    if (!isVersionFeatureFlag(flagValue)) {\n      return flagValue;\n    }\n\n    return getVersionData(flagValue, this.#clientVersion);\n  }\n\n  async #processRemoteFeatureFlags(remoteFeatureFlags: FeatureFlags): Promise<{\n    processedFlags: FeatureFlags;\n    thresholdCacheUpdates: Record<string, number>;\n  }> {\n    const processedFlags: FeatureFlags = {};\n    const metaMetricsId = this.#getMetaMetricsId();\n    const thresholdCacheUpdates: Record<string, number> = {};\n\n    for (const [\n      remoteFeatureFlagName,\n      remoteFeatureFlagValue,\n    ] of Object.entries(remoteFeatureFlags)) {\n      let processedValue = this.#processVersionBasedFlag(\n        remoteFeatureFlagValue,\n      );\n      if (processedValue === null) {\n        continue;\n      }\n\n      if (Array.isArray(processedValue)) {\n        // Validate array has valid threshold items before doing expensive crypto operation\n        const hasValidThresholds = processedValue.some(\n          isFeatureFlagWithScopeValue,\n        );\n\n        if (!hasValidThresholds) {\n          // Not a threshold array - preserve as-is\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Skip threshold processing if metaMetricsId is not available\n        if (!metaMetricsId) {\n          // Preserve array as-is when user hasn't opted into MetaMetrics\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Check cache first, calculate only if needed\n        const cacheKey = `${metaMetricsId}:${remoteFeatureFlagName}` as const;\n        let thresholdValue = this.state.thresholdCache?.[cacheKey];\n\n        if (thresholdValue === undefined) {\n          thresholdValue = await calculateThresholdForFlag(\n            metaMetricsId,\n            remoteFeatureFlagName,\n          );\n\n          // Collect new threshold for batched state update\n          thresholdCacheUpdates[cacheKey] = thresholdValue;\n        }\n\n        const threshold = thresholdValue;\n        const selectedGroup = processedValue.find(\n          (featureFlag): featureFlag is FeatureFlagScopeValue => {\n            if (!isFeatureFlagWithScopeValue(featureFlag)) {\n              return false;\n            }\n\n            return threshold <= featureFlag.scope.value;\n          },\n        );\n        if (selectedGroup) {\n          processedValue = {\n            name: selectedGroup.name,\n            value: selectedGroup.value,\n          };\n        }\n      }\n\n      processedFlags[remoteFeatureFlagName] = processedValue;\n    }\n\n    return { processedFlags, thresholdCacheUpdates };\n  }\n\n  /**\n   * Enables the controller, allowing it to make network requests.\n   */\n  enable(): void {\n    this.#disabled = false;\n  }\n\n  /**\n   * Disables the controller, preventing it from making network requests.\n   */\n  disable(): void {\n    this.#disabled = true;\n  }\n\n  /**\n   * Sets a local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to override.\n   * @param value - The override value for the feature flag.\n   */\n  setFlagOverride(flagName: string, value: Json): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {\n          ...this.state.localOverrides,\n          [flagName]: value,\n        },\n      };\n    });\n  }\n\n  /**\n   * Clears the local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to clear.\n   */\n  removeFlagOverride(flagName: string): void {\n    const newLocalOverrides = { ...this.state.localOverrides };\n    delete newLocalOverrides[flagName];\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: newLocalOverrides,\n      };\n    });\n  }\n\n  /**\n   * Clears all local feature flag overrides.\n   */\n  clearAllFlagOverrides(): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {},\n      };\n    });\n  }\n}\n"]}
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{\n  BaseController,\n  ControllerGetStateAction,\n} from '@metamask/base-controller';\nimport type { ControllerStateChangeEvent } from '@metamask/base-controller';\nimport type { Messenger } from '@metamask/messenger';\nimport { isValidSemVerVersion } from '@metamask/utils';\nimport type { Json, SemVerVersion } from '@metamask/utils';\n\nimport type { AbstractClientConfigApiService } from './client-config-api-service/abstract-client-config-api-service';\nimport type { RemoteFeatureFlagControllerMethodActions } from './remote-feature-flag-controller-method-action-types';\nimport type {\n  FeatureFlags,\n  ServiceResponse,\n  FeatureFlagScopeValue,\n} from './remote-feature-flag-controller-types';\nimport {\n  calculateThresholdForFlag,\n  isFeatureFlagWithScopeValue,\n} from './utils/user-segmentation-utils';\nimport { isVersionFeatureFlag, getVersionData } from './utils/version';\n\n// === GENERAL ===\n\nexport const controllerName = 'RemoteFeatureFlagController';\nexport const DEFAULT_CACHE_DURATION = 24 * 60 * 60 * 1000; // 1 day\n\n// === STATE ===\n\nexport type RemoteFeatureFlagControllerState = {\n  remoteFeatureFlags: FeatureFlags;\n  localOverrides?: FeatureFlags;\n  rawRemoteFeatureFlags?: FeatureFlags;\n  cacheTimestamp: number;\n  thresholdCache?: Record<string, number>;\n};\n\nconst remoteFeatureFlagControllerMetadata = {\n  remoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  localOverrides: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  rawRemoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  cacheTimestamp: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  thresholdCache: {\n    includeInStateLogs: false,\n    persist: true,\n    includeInDebugSnapshot: false,\n    usedInUi: false,\n  },\n};\n\n// === MESSENGER ===\n\nconst MESSENGER_EXPOSED_METHODS = [\n  'clearAllFlagOverrides',\n  'disable',\n  'enable',\n  'removeFlagOverride',\n  'setFlagOverride',\n  'updateRemoteFeatureFlags',\n] as const;\n\nexport type RemoteFeatureFlagControllerGetStateAction =\n  ControllerGetStateAction<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerActions =\n  | RemoteFeatureFlagControllerGetStateAction\n  | RemoteFeatureFlagControllerMethodActions;\n\nexport type RemoteFeatureFlagControllerStateChangeEvent =\n  ControllerStateChangeEvent<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerEvents =\n  RemoteFeatureFlagControllerStateChangeEvent;\n\nexport type RemoteFeatureFlagControllerMessenger = Messenger<\n  typeof controllerName,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerEvents\n>;\n\n/**\n * Returns the default state for the RemoteFeatureFlagController.\n *\n * @returns The default controller state.\n */\nexport function getDefaultRemoteFeatureFlagControllerState(): RemoteFeatureFlagControllerState {\n  return {\n    remoteFeatureFlags: {},\n    localOverrides: {},\n    rawRemoteFeatureFlags: {},\n    cacheTimestamp: 0,\n  };\n}\n\n/**\n * The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags.\n * It fetches feature flags from a remote API, caches them, and provides methods to access\n * and manage these flags. The controller ensures that feature flags are refreshed based on\n * a specified interval and handles cases where the controller is disabled or the network is unavailable.\n */\nexport class RemoteFeatureFlagController extends BaseController<\n  typeof controllerName,\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger\n> {\n  readonly #fetchInterval: number;\n\n  #disabled: boolean;\n\n  readonly #clientConfigApiService: AbstractClientConfigApiService;\n\n  #inProgressFlagUpdate?: Promise<ServiceResponse>;\n\n  readonly #getMetaMetricsId: () => string;\n\n  readonly #clientVersion: SemVerVersion;\n\n  /**\n   * Constructs a new RemoteFeatureFlagController instance.\n   *\n   * @param options - The controller options.\n   * @param options.messenger - The messenger used for communication.\n   * @param options.state - The initial state of the controller.\n   * @param options.clientConfigApiService - The service instance to fetch remote feature flags.\n   * @param options.fetchInterval - The interval in milliseconds before cached flags expire. Defaults to 1 day.\n   * @param options.disabled - Determines if the controller should be disabled initially. Defaults to false.\n   * @param options.getMetaMetricsId - Returns metaMetricsId.\n   * @param options.clientVersion - The current client version for version-based feature flag filtering. Must be a valid 3-part SemVer version string.\n   * @param options.prevClientVersion - The previous client version for feature flag cache invalidation.\n   */\n  constructor({\n    messenger,\n    state,\n    clientConfigApiService,\n    fetchInterval = DEFAULT_CACHE_DURATION,\n    disabled = false,\n    getMetaMetricsId,\n    clientVersion,\n    prevClientVersion,\n  }: {\n    messenger: RemoteFeatureFlagControllerMessenger;\n    state?: Partial<RemoteFeatureFlagControllerState>;\n    clientConfigApiService: AbstractClientConfigApiService;\n    getMetaMetricsId: () => string;\n    fetchInterval?: number;\n    disabled?: boolean;\n    clientVersion: string;\n    prevClientVersion?: string;\n  }) {\n    if (!isValidSemVerVersion(clientVersion)) {\n      throw new Error(\n        `Invalid clientVersion: \"${clientVersion}\". Must be a valid 3-part SemVer version string`,\n      );\n    }\n\n    const initialState: RemoteFeatureFlagControllerState = {\n      ...getDefaultRemoteFeatureFlagControllerState(),\n      ...state,\n    };\n\n    const hasClientVersionChanged =\n      isValidSemVerVersion(prevClientVersion) &&\n      prevClientVersion !== clientVersion;\n\n    super({\n      name: controllerName,\n      metadata: remoteFeatureFlagControllerMetadata,\n      messenger,\n      state: {\n        ...initialState,\n        cacheTimestamp: hasClientVersionChanged\n          ? 0\n          : initialState.cacheTimestamp,\n      },\n    });\n\n    this.#fetchInterval = fetchInterval;\n    this.#disabled = disabled;\n    this.#clientConfigApiService = clientConfigApiService;\n    this.#getMetaMetricsId = getMetaMetricsId;\n    this.#clientVersion = clientVersion;\n\n    this.messenger.registerMethodActionHandlers(\n      this,\n      MESSENGER_EXPOSED_METHODS,\n    );\n  }\n\n  /**\n   * Checks if the cached feature flags are expired based on the fetch interval.\n   *\n   * @returns Whether the cache is expired (`true`) or still valid (`false`).\n   */\n  #isCacheExpired(): boolean {\n    return Date.now() - this.state.cacheTimestamp > this.#fetchInterval;\n  }\n\n  /**\n   * Retrieves the remote feature flags, fetching from the API if necessary.\n   * Uses caching to prevent redundant API calls and handles concurrent fetches.\n   *\n   * @returns A promise that resolves to the current set of feature flags.\n   */\n  async updateRemoteFeatureFlags(): Promise<void> {\n    if (this.#disabled || !this.#isCacheExpired()) {\n      return;\n    }\n\n    let serverData;\n\n    if (this.#inProgressFlagUpdate) {\n      await this.#inProgressFlagUpdate;\n      return;\n    }\n\n    try {\n      this.#inProgressFlagUpdate =\n        this.#clientConfigApiService.fetchRemoteFeatureFlags();\n\n      serverData = await this.#inProgressFlagUpdate;\n    } finally {\n      this.#inProgressFlagUpdate = undefined;\n    }\n\n    await this.#updateCache(serverData.remoteFeatureFlags);\n  }\n\n  /**\n   * Updates the controller's state with new feature flags and resets the cache timestamp.\n   *\n   * @param remoteFeatureFlags - The new feature flags to cache.\n   */\n  async #updateCache(remoteFeatureFlags: FeatureFlags): Promise<void> {\n    const { processedFlags, thresholdCacheUpdates } =\n      await this.#processRemoteFeatureFlags(remoteFeatureFlags);\n\n    const metaMetricsId = this.#getMetaMetricsId();\n    const currentFlagNames = Object.keys(remoteFeatureFlags);\n\n    // Build updated threshold cache\n    const updatedThresholdCache = { ...(this.state.thresholdCache ?? {}) };\n\n    // Apply new thresholds\n    for (const [cacheKey, threshold] of Object.entries(thresholdCacheUpdates)) {\n      updatedThresholdCache[cacheKey] = threshold;\n    }\n\n    // Clean up stale entries\n    for (const cacheKey of Object.keys(updatedThresholdCache)) {\n      const [cachedMetaMetricsId, ...cachedFlagNameParts] = cacheKey.split(':');\n      const cachedFlagName = cachedFlagNameParts.join(':');\n      if (\n        cachedMetaMetricsId === metaMetricsId &&\n        !currentFlagNames.includes(cachedFlagName)\n      ) {\n        delete updatedThresholdCache[cacheKey];\n      }\n    }\n\n    // Single state update with all changes batched together\n    this.update(() => {\n      return {\n        ...this.state,\n        remoteFeatureFlags: processedFlags,\n        rawRemoteFeatureFlags: remoteFeatureFlags,\n        cacheTimestamp: Date.now(),\n        thresholdCache: updatedThresholdCache,\n      };\n    });\n  }\n\n  /**\n   * Processes a version-based feature flag to get the appropriate value for the current client version.\n   *\n   * @param flagValue - The feature flag value to process\n   * @returns The processed value, or null if no version qualifies (skip this flag)\n   */\n  #processVersionBasedFlag(flagValue: Json): Json | null {\n    if (!isVersionFeatureFlag(flagValue)) {\n      return flagValue;\n    }\n\n    return getVersionData(flagValue, this.#clientVersion);\n  }\n\n  async #processRemoteFeatureFlags(remoteFeatureFlags: FeatureFlags): Promise<{\n    processedFlags: FeatureFlags;\n    thresholdCacheUpdates: Record<string, number>;\n  }> {\n    const processedFlags: FeatureFlags = {};\n    const metaMetricsId = this.#getMetaMetricsId();\n    const thresholdCacheUpdates: Record<string, number> = {};\n\n    for (const [\n      remoteFeatureFlagName,\n      remoteFeatureFlagValue,\n    ] of Object.entries(remoteFeatureFlags)) {\n      let processedValue = this.#processVersionBasedFlag(\n        remoteFeatureFlagValue,\n      );\n      if (processedValue === null) {\n        continue;\n      }\n\n      if (Array.isArray(processedValue)) {\n        // Validate array has valid threshold items before doing expensive crypto operation\n        const hasValidThresholds = processedValue.some(\n          isFeatureFlagWithScopeValue,\n        );\n\n        if (!hasValidThresholds) {\n          // Not a threshold array - preserve as-is\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Skip threshold processing if metaMetricsId is not available\n        if (!metaMetricsId) {\n          // Preserve array as-is when user hasn't opted into MetaMetrics\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Check cache first, calculate only if needed\n        const cacheKey = `${metaMetricsId}:${remoteFeatureFlagName}` as const;\n        let thresholdValue = this.state.thresholdCache?.[cacheKey];\n\n        if (thresholdValue === undefined) {\n          thresholdValue = await calculateThresholdForFlag(\n            metaMetricsId,\n            remoteFeatureFlagName,\n          );\n\n          // Collect new threshold for batched state update\n          thresholdCacheUpdates[cacheKey] = thresholdValue;\n        }\n\n        const threshold = thresholdValue;\n        const selectedGroup = processedValue.find(\n          (featureFlag): featureFlag is FeatureFlagScopeValue => {\n            if (!isFeatureFlagWithScopeValue(featureFlag)) {\n              return false;\n            }\n\n            return threshold <= featureFlag.scope.value;\n          },\n        );\n        if (selectedGroup) {\n          processedValue = {\n            name: selectedGroup.name,\n            value: selectedGroup.value,\n          };\n        }\n      }\n\n      processedFlags[remoteFeatureFlagName] = processedValue;\n    }\n\n    return { processedFlags, thresholdCacheUpdates };\n  }\n\n  /**\n   * Enables the controller, allowing it to make network requests.\n   */\n  enable(): void {\n    this.#disabled = false;\n  }\n\n  /**\n   * Disables the controller, preventing it from making network requests.\n   */\n  disable(): void {\n    this.#disabled = true;\n  }\n\n  /**\n   * Sets a local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to override.\n   * @param value - The override value for the feature flag.\n   */\n  setFlagOverride(flagName: string, value: Json): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {\n          ...this.state.localOverrides,\n          [flagName]: value,\n        },\n      };\n    });\n  }\n\n  /**\n   * Clears the local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to clear.\n   */\n  removeFlagOverride(flagName: string): void {\n    const newLocalOverrides = { ...this.state.localOverrides };\n    delete newLocalOverrides[flagName];\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: newLocalOverrides,\n      };\n    });\n  }\n\n  /**\n   * Clears all local feature flag overrides.\n   */\n  clearAllFlagOverrides(): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {},\n      };\n    });\n  }\n}\n"]}

dist/remote-feature-flag-controller.d.cts

@@ -1,6 +0,7 @@
-import { BaseController } from "@metamask/base-controller";
-import type { ControllerGetStateAction, ControllerStateChangeEvent } from "@metamask/base-controller";
+import { BaseController, ControllerGetStateAction } from "@metamask/base-controller";
+import type { ControllerStateChangeEvent } from "@metamask/base-controller";
 import type { Messenger } from "@metamask/messenger";
 import type { Json } from "@metamask/utils";
 import type { AbstractClientConfigApiService } from "./client-config-api-service/abstract-client-config-api-service.cjs";
+import type { RemoteFeatureFlagControllerMethodActions } from "./remote-feature-flag-controller-method-action-types.cjs";
 import type { FeatureFlags } from "./remote-feature-flag-controller-types.cjs";
@@ -16,23 +17,4 @@ export declare const controllerName = "RemoteFeatureFlagController";
 };
-/**
- * The action to retrieve the state of the {@link RemoteFeatureFlagController}.
- */
 export type RemoteFeatureFlagControllerGetStateAction = ControllerGetStateAction<typeof controllerName, RemoteFeatureFlagControllerState>;
-export type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {
-    type: `${typeof controllerName}:updateRemoteFeatureFlags`;
-    handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];
-};
-export type RemoteFeatureFlagControllerSetFlagOverrideAction = {
-    type: `${typeof controllerName}:setFlagOverride`;
-    handler: RemoteFeatureFlagController['setFlagOverride'];
-};
-export type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {
-    type: `${typeof controllerName}:removeFlagOverride`;
-    handler: RemoteFeatureFlagController['removeFlagOverride'];
-};
-export type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {
-    type: `${typeof controllerName}:clearAllFlagOverrides`;
-    handler: RemoteFeatureFlagController['clearAllFlagOverrides'];
-};
-export type RemoteFeatureFlagControllerActions = RemoteFeatureFlagControllerGetStateAction | RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction | RemoteFeatureFlagControllerSetFlagOverrideAction | RemoteFeatureFlagControllerRemoveFlagOverrideAction | RemoteFeatureFlagControllerClearAllFlagOverridesAction;
+export type RemoteFeatureFlagControllerActions = RemoteFeatureFlagControllerGetStateAction | RemoteFeatureFlagControllerMethodActions;
 export type RemoteFeatureFlagControllerStateChangeEvent = ControllerStateChangeEvent<typeof controllerName, RemoteFeatureFlagControllerState>;
@@ -39,0 +21,0 @@ export type RemoteFeatureFlagControllerEvents = RemoteFeatureFlagControllerStateChangeEvent;

dist/remote-feature-flag-controller.d.cts.map

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dist/remote-feature-flag-controller.d.mts

@@ -1,6 +0,7 @@
-import { BaseController } from "@metamask/base-controller";
-import type { ControllerGetStateAction, ControllerStateChangeEvent } from "@metamask/base-controller";
+import { BaseController, ControllerGetStateAction } from "@metamask/base-controller";
+import type { ControllerStateChangeEvent } from "@metamask/base-controller";
 import type { Messenger } from "@metamask/messenger";
 import type { Json } from "@metamask/utils";
 import type { AbstractClientConfigApiService } from "./client-config-api-service/abstract-client-config-api-service.mjs";
+import type { RemoteFeatureFlagControllerMethodActions } from "./remote-feature-flag-controller-method-action-types.mjs";
 import type { FeatureFlags } from "./remote-feature-flag-controller-types.mjs";
@@ -16,23 +17,4 @@ export declare const controllerName = "RemoteFeatureFlagController";
 };
-/**
- * The action to retrieve the state of the {@link RemoteFeatureFlagController}.
- */
 export type RemoteFeatureFlagControllerGetStateAction = ControllerGetStateAction<typeof controllerName, RemoteFeatureFlagControllerState>;
-export type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {
-    type: `${typeof controllerName}:updateRemoteFeatureFlags`;
-    handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];
-};
-export type RemoteFeatureFlagControllerSetFlagOverrideAction = {
-    type: `${typeof controllerName}:setFlagOverride`;
-    handler: RemoteFeatureFlagController['setFlagOverride'];
-};
-export type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {
-    type: `${typeof controllerName}:removeFlagOverride`;
-    handler: RemoteFeatureFlagController['removeFlagOverride'];
-};
-export type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {
-    type: `${typeof controllerName}:clearAllFlagOverrides`;
-    handler: RemoteFeatureFlagController['clearAllFlagOverrides'];
-};
-export type RemoteFeatureFlagControllerActions = RemoteFeatureFlagControllerGetStateAction | RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction | RemoteFeatureFlagControllerSetFlagOverrideAction | RemoteFeatureFlagControllerRemoveFlagOverrideAction | RemoteFeatureFlagControllerClearAllFlagOverridesAction;
+export type RemoteFeatureFlagControllerActions = RemoteFeatureFlagControllerGetStateAction | RemoteFeatureFlagControllerMethodActions;
 export type RemoteFeatureFlagControllerStateChangeEvent = ControllerStateChangeEvent<typeof controllerName, RemoteFeatureFlagControllerState>;
@@ -39,0 +21,0 @@ export type RemoteFeatureFlagControllerEvents = RemoteFeatureFlagControllerStateChangeEvent;

dist/remote-feature-flag-controller.d.mts.map

@@ -1,1 +0,1 @@
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dist/remote-feature-flag-controller.mjs

@@ -52,2 +52,11 @@ var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
 };
+// === MESSENGER ===
+const MESSENGER_EXPOSED_METHODS = [
+    'clearAllFlagOverrides',
+    'disable',
+    'enable',
+    'removeFlagOverride',
+    'setFlagOverride',
+    'updateRemoteFeatureFlags',
+];
 /**
@@ -119,2 +128,3 @@ * Returns the default state for the RemoteFeatureFlagController.
         __classPrivateFieldSet(this, _RemoteFeatureFlagController_clientVersion, clientVersion, "f");
+        this.messenger.registerMethodActionHandlers(this, MESSENGER_EXPOSED_METHODS);
     }
@@ -121,0 +131,0 @@ /**

dist/remote-feature-flag-controller.mjs.map

@@ -1,1 +0,1 @@
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{ BaseController } from '@metamask/base-controller';\nimport type {\n  ControllerGetStateAction,\n  ControllerStateChangeEvent,\n} from '@metamask/base-controller';\nimport type { Messenger } from '@metamask/messenger';\nimport { isValidSemVerVersion } from '@metamask/utils';\nimport type { Json, SemVerVersion } from '@metamask/utils';\n\nimport type { AbstractClientConfigApiService } from './client-config-api-service/abstract-client-config-api-service';\nimport type {\n  FeatureFlags,\n  ServiceResponse,\n  FeatureFlagScopeValue,\n} from './remote-feature-flag-controller-types';\nimport {\n  calculateThresholdForFlag,\n  isFeatureFlagWithScopeValue,\n} from './utils/user-segmentation-utils';\nimport { isVersionFeatureFlag, getVersionData } from './utils/version';\n\n// === GENERAL ===\n\nexport const controllerName = 'RemoteFeatureFlagController';\nexport const DEFAULT_CACHE_DURATION = 24 * 60 * 60 * 1000; // 1 day\n\n// === STATE ===\n\nexport type RemoteFeatureFlagControllerState = {\n  remoteFeatureFlags: FeatureFlags;\n  localOverrides?: FeatureFlags;\n  rawRemoteFeatureFlags?: FeatureFlags;\n  cacheTimestamp: number;\n  thresholdCache?: Record<string, number>;\n};\n\nconst remoteFeatureFlagControllerMetadata = {\n  remoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  localOverrides: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  rawRemoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  cacheTimestamp: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  thresholdCache: {\n    includeInStateLogs: false,\n    persist: true,\n    includeInDebugSnapshot: false,\n    usedInUi: false,\n  },\n};\n\n// === MESSENGER ===\n\n/**\n * The action to retrieve the state of the {@link RemoteFeatureFlagController}.\n */\nexport type RemoteFeatureFlagControllerGetStateAction =\n  ControllerGetStateAction<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction = {\n  type: `${typeof controllerName}:updateRemoteFeatureFlags`;\n  handler: RemoteFeatureFlagController['updateRemoteFeatureFlags'];\n};\n\nexport type RemoteFeatureFlagControllerSetFlagOverrideAction = {\n  type: `${typeof controllerName}:setFlagOverride`;\n  handler: RemoteFeatureFlagController['setFlagOverride'];\n};\n\nexport type RemoteFeatureFlagControllerRemoveFlagOverrideAction = {\n  type: `${typeof controllerName}:removeFlagOverride`;\n  handler: RemoteFeatureFlagController['removeFlagOverride'];\n};\n\nexport type RemoteFeatureFlagControllerClearAllFlagOverridesAction = {\n  type: `${typeof controllerName}:clearAllFlagOverrides`;\n  handler: RemoteFeatureFlagController['clearAllFlagOverrides'];\n};\n\nexport type RemoteFeatureFlagControllerActions =\n  | RemoteFeatureFlagControllerGetStateAction\n  | RemoteFeatureFlagControllerUpdateRemoteFeatureFlagsAction\n  | RemoteFeatureFlagControllerSetFlagOverrideAction\n  | RemoteFeatureFlagControllerRemoveFlagOverrideAction\n  | RemoteFeatureFlagControllerClearAllFlagOverridesAction;\n\nexport type RemoteFeatureFlagControllerStateChangeEvent =\n  ControllerStateChangeEvent<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerEvents =\n  RemoteFeatureFlagControllerStateChangeEvent;\n\nexport type RemoteFeatureFlagControllerMessenger = Messenger<\n  typeof controllerName,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerEvents\n>;\n\n/**\n * Returns the default state for the RemoteFeatureFlagController.\n *\n * @returns The default controller state.\n */\nexport function getDefaultRemoteFeatureFlagControllerState(): RemoteFeatureFlagControllerState {\n  return {\n    remoteFeatureFlags: {},\n    localOverrides: {},\n    rawRemoteFeatureFlags: {},\n    cacheTimestamp: 0,\n  };\n}\n\n/**\n * The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags.\n * It fetches feature flags from a remote API, caches them, and provides methods to access\n * and manage these flags. The controller ensures that feature flags are refreshed based on\n * a specified interval and handles cases where the controller is disabled or the network is unavailable.\n */\nexport class RemoteFeatureFlagController extends BaseController<\n  typeof controllerName,\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger\n> {\n  readonly #fetchInterval: number;\n\n  #disabled: boolean;\n\n  readonly #clientConfigApiService: AbstractClientConfigApiService;\n\n  #inProgressFlagUpdate?: Promise<ServiceResponse>;\n\n  readonly #getMetaMetricsId: () => string;\n\n  readonly #clientVersion: SemVerVersion;\n\n  /**\n   * Constructs a new RemoteFeatureFlagController instance.\n   *\n   * @param options - The controller options.\n   * @param options.messenger - The messenger used for communication.\n   * @param options.state - The initial state of the controller.\n   * @param options.clientConfigApiService - The service instance to fetch remote feature flags.\n   * @param options.fetchInterval - The interval in milliseconds before cached flags expire. Defaults to 1 day.\n   * @param options.disabled - Determines if the controller should be disabled initially. Defaults to false.\n   * @param options.getMetaMetricsId - Returns metaMetricsId.\n   * @param options.clientVersion - The current client version for version-based feature flag filtering. Must be a valid 3-part SemVer version string.\n   * @param options.prevClientVersion - The previous client version for feature flag cache invalidation.\n   */\n  constructor({\n    messenger,\n    state,\n    clientConfigApiService,\n    fetchInterval = DEFAULT_CACHE_DURATION,\n    disabled = false,\n    getMetaMetricsId,\n    clientVersion,\n    prevClientVersion,\n  }: {\n    messenger: RemoteFeatureFlagControllerMessenger;\n    state?: Partial<RemoteFeatureFlagControllerState>;\n    clientConfigApiService: AbstractClientConfigApiService;\n    getMetaMetricsId: () => string;\n    fetchInterval?: number;\n    disabled?: boolean;\n    clientVersion: string;\n    prevClientVersion?: string;\n  }) {\n    if (!isValidSemVerVersion(clientVersion)) {\n      throw new Error(\n        `Invalid clientVersion: \"${clientVersion}\". Must be a valid 3-part SemVer version string`,\n      );\n    }\n\n    const initialState: RemoteFeatureFlagControllerState = {\n      ...getDefaultRemoteFeatureFlagControllerState(),\n      ...state,\n    };\n\n    const hasClientVersionChanged =\n      isValidSemVerVersion(prevClientVersion) &&\n      prevClientVersion !== clientVersion;\n\n    super({\n      name: controllerName,\n      metadata: remoteFeatureFlagControllerMetadata,\n      messenger,\n      state: {\n        ...initialState,\n        cacheTimestamp: hasClientVersionChanged\n          ? 0\n          : initialState.cacheTimestamp,\n      },\n    });\n\n    this.#fetchInterval = fetchInterval;\n    this.#disabled = disabled;\n    this.#clientConfigApiService = clientConfigApiService;\n    this.#getMetaMetricsId = getMetaMetricsId;\n    this.#clientVersion = clientVersion;\n  }\n\n  /**\n   * Checks if the cached feature flags are expired based on the fetch interval.\n   *\n   * @returns Whether the cache is expired (`true`) or still valid (`false`).\n   */\n  #isCacheExpired(): boolean {\n    return Date.now() - this.state.cacheTimestamp > this.#fetchInterval;\n  }\n\n  /**\n   * Retrieves the remote feature flags, fetching from the API if necessary.\n   * Uses caching to prevent redundant API calls and handles concurrent fetches.\n   *\n   * @returns A promise that resolves to the current set of feature flags.\n   */\n  async updateRemoteFeatureFlags(): Promise<void> {\n    if (this.#disabled || !this.#isCacheExpired()) {\n      return;\n    }\n\n    let serverData;\n\n    if (this.#inProgressFlagUpdate) {\n      await this.#inProgressFlagUpdate;\n      return;\n    }\n\n    try {\n      this.#inProgressFlagUpdate =\n        this.#clientConfigApiService.fetchRemoteFeatureFlags();\n\n      serverData = await this.#inProgressFlagUpdate;\n    } finally {\n      this.#inProgressFlagUpdate = undefined;\n    }\n\n    await this.#updateCache(serverData.remoteFeatureFlags);\n  }\n\n  /**\n   * Updates the controller's state with new feature flags and resets the cache timestamp.\n   *\n   * @param remoteFeatureFlags - The new feature flags to cache.\n   */\n  async #updateCache(remoteFeatureFlags: FeatureFlags): Promise<void> {\n    const { processedFlags, thresholdCacheUpdates } =\n      await this.#processRemoteFeatureFlags(remoteFeatureFlags);\n\n    const metaMetricsId = this.#getMetaMetricsId();\n    const currentFlagNames = Object.keys(remoteFeatureFlags);\n\n    // Build updated threshold cache\n    const updatedThresholdCache = { ...(this.state.thresholdCache ?? {}) };\n\n    // Apply new thresholds\n    for (const [cacheKey, threshold] of Object.entries(thresholdCacheUpdates)) {\n      updatedThresholdCache[cacheKey] = threshold;\n    }\n\n    // Clean up stale entries\n    for (const cacheKey of Object.keys(updatedThresholdCache)) {\n      const [cachedMetaMetricsId, ...cachedFlagNameParts] = cacheKey.split(':');\n      const cachedFlagName = cachedFlagNameParts.join(':');\n      if (\n        cachedMetaMetricsId === metaMetricsId &&\n        !currentFlagNames.includes(cachedFlagName)\n      ) {\n        delete updatedThresholdCache[cacheKey];\n      }\n    }\n\n    // Single state update with all changes batched together\n    this.update(() => {\n      return {\n        ...this.state,\n        remoteFeatureFlags: processedFlags,\n        rawRemoteFeatureFlags: remoteFeatureFlags,\n        cacheTimestamp: Date.now(),\n        thresholdCache: updatedThresholdCache,\n      };\n    });\n  }\n\n  /**\n   * Processes a version-based feature flag to get the appropriate value for the current client version.\n   *\n   * @param flagValue - The feature flag value to process\n   * @returns The processed value, or null if no version qualifies (skip this flag)\n   */\n  #processVersionBasedFlag(flagValue: Json): Json | null {\n    if (!isVersionFeatureFlag(flagValue)) {\n      return flagValue;\n    }\n\n    return getVersionData(flagValue, this.#clientVersion);\n  }\n\n  async #processRemoteFeatureFlags(remoteFeatureFlags: FeatureFlags): Promise<{\n    processedFlags: FeatureFlags;\n    thresholdCacheUpdates: Record<string, number>;\n  }> {\n    const processedFlags: FeatureFlags = {};\n    const metaMetricsId = this.#getMetaMetricsId();\n    const thresholdCacheUpdates: Record<string, number> = {};\n\n    for (const [\n      remoteFeatureFlagName,\n      remoteFeatureFlagValue,\n    ] of Object.entries(remoteFeatureFlags)) {\n      let processedValue = this.#processVersionBasedFlag(\n        remoteFeatureFlagValue,\n      );\n      if (processedValue === null) {\n        continue;\n      }\n\n      if (Array.isArray(processedValue)) {\n        // Validate array has valid threshold items before doing expensive crypto operation\n        const hasValidThresholds = processedValue.some(\n          isFeatureFlagWithScopeValue,\n        );\n\n        if (!hasValidThresholds) {\n          // Not a threshold array - preserve as-is\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Skip threshold processing if metaMetricsId is not available\n        if (!metaMetricsId) {\n          // Preserve array as-is when user hasn't opted into MetaMetrics\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Check cache first, calculate only if needed\n        const cacheKey = `${metaMetricsId}:${remoteFeatureFlagName}` as const;\n        let thresholdValue = this.state.thresholdCache?.[cacheKey];\n\n        if (thresholdValue === undefined) {\n          thresholdValue = await calculateThresholdForFlag(\n            metaMetricsId,\n            remoteFeatureFlagName,\n          );\n\n          // Collect new threshold for batched state update\n          thresholdCacheUpdates[cacheKey] = thresholdValue;\n        }\n\n        const threshold = thresholdValue;\n        const selectedGroup = processedValue.find(\n          (featureFlag): featureFlag is FeatureFlagScopeValue => {\n            if (!isFeatureFlagWithScopeValue(featureFlag)) {\n              return false;\n            }\n\n            return threshold <= featureFlag.scope.value;\n          },\n        );\n        if (selectedGroup) {\n          processedValue = {\n            name: selectedGroup.name,\n            value: selectedGroup.value,\n          };\n        }\n      }\n\n      processedFlags[remoteFeatureFlagName] = processedValue;\n    }\n\n    return { processedFlags, thresholdCacheUpdates };\n  }\n\n  /**\n   * Enables the controller, allowing it to make network requests.\n   */\n  enable(): void {\n    this.#disabled = false;\n  }\n\n  /**\n   * Disables the controller, preventing it from making network requests.\n   */\n  disable(): void {\n    this.#disabled = true;\n  }\n\n  /**\n   * Sets a local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to override.\n   * @param value - The override value for the feature flag.\n   */\n  setFlagOverride(flagName: string, value: Json): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {\n          ...this.state.localOverrides,\n          [flagName]: value,\n        },\n      };\n    });\n  }\n\n  /**\n   * Clears the local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to clear.\n   */\n  removeFlagOverride(flagName: string): void {\n    const newLocalOverrides = { ...this.state.localOverrides };\n    delete newLocalOverrides[flagName];\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: newLocalOverrides,\n      };\n    });\n  }\n\n  /**\n   * Clears all local feature flag overrides.\n   */\n  clearAllFlagOverrides(): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {},\n      };\n    });\n  }\n}\n"]}
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{\n  BaseController,\n  ControllerGetStateAction,\n} from '@metamask/base-controller';\nimport type { ControllerStateChangeEvent } from '@metamask/base-controller';\nimport type { Messenger } from '@metamask/messenger';\nimport { isValidSemVerVersion } from '@metamask/utils';\nimport type { Json, SemVerVersion } from '@metamask/utils';\n\nimport type { AbstractClientConfigApiService } from './client-config-api-service/abstract-client-config-api-service';\nimport type { RemoteFeatureFlagControllerMethodActions } from './remote-feature-flag-controller-method-action-types';\nimport type {\n  FeatureFlags,\n  ServiceResponse,\n  FeatureFlagScopeValue,\n} from './remote-feature-flag-controller-types';\nimport {\n  calculateThresholdForFlag,\n  isFeatureFlagWithScopeValue,\n} from './utils/user-segmentation-utils';\nimport { isVersionFeatureFlag, getVersionData } from './utils/version';\n\n// === GENERAL ===\n\nexport const controllerName = 'RemoteFeatureFlagController';\nexport const DEFAULT_CACHE_DURATION = 24 * 60 * 60 * 1000; // 1 day\n\n// === STATE ===\n\nexport type RemoteFeatureFlagControllerState = {\n  remoteFeatureFlags: FeatureFlags;\n  localOverrides?: FeatureFlags;\n  rawRemoteFeatureFlags?: FeatureFlags;\n  cacheTimestamp: number;\n  thresholdCache?: Record<string, number>;\n};\n\nconst remoteFeatureFlagControllerMetadata = {\n  remoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  localOverrides: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: true,\n  },\n  rawRemoteFeatureFlags: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  cacheTimestamp: {\n    includeInStateLogs: true,\n    persist: true,\n    includeInDebugSnapshot: true,\n    usedInUi: false,\n  },\n  thresholdCache: {\n    includeInStateLogs: false,\n    persist: true,\n    includeInDebugSnapshot: false,\n    usedInUi: false,\n  },\n};\n\n// === MESSENGER ===\n\nconst MESSENGER_EXPOSED_METHODS = [\n  'clearAllFlagOverrides',\n  'disable',\n  'enable',\n  'removeFlagOverride',\n  'setFlagOverride',\n  'updateRemoteFeatureFlags',\n] as const;\n\nexport type RemoteFeatureFlagControllerGetStateAction =\n  ControllerGetStateAction<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerActions =\n  | RemoteFeatureFlagControllerGetStateAction\n  | RemoteFeatureFlagControllerMethodActions;\n\nexport type RemoteFeatureFlagControllerStateChangeEvent =\n  ControllerStateChangeEvent<\n    typeof controllerName,\n    RemoteFeatureFlagControllerState\n  >;\n\nexport type RemoteFeatureFlagControllerEvents =\n  RemoteFeatureFlagControllerStateChangeEvent;\n\nexport type RemoteFeatureFlagControllerMessenger = Messenger<\n  typeof controllerName,\n  RemoteFeatureFlagControllerActions,\n  RemoteFeatureFlagControllerEvents\n>;\n\n/**\n * Returns the default state for the RemoteFeatureFlagController.\n *\n * @returns The default controller state.\n */\nexport function getDefaultRemoteFeatureFlagControllerState(): RemoteFeatureFlagControllerState {\n  return {\n    remoteFeatureFlags: {},\n    localOverrides: {},\n    rawRemoteFeatureFlags: {},\n    cacheTimestamp: 0,\n  };\n}\n\n/**\n * The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags.\n * It fetches feature flags from a remote API, caches them, and provides methods to access\n * and manage these flags. The controller ensures that feature flags are refreshed based on\n * a specified interval and handles cases where the controller is disabled or the network is unavailable.\n */\nexport class RemoteFeatureFlagController extends BaseController<\n  typeof controllerName,\n  RemoteFeatureFlagControllerState,\n  RemoteFeatureFlagControllerMessenger\n> {\n  readonly #fetchInterval: number;\n\n  #disabled: boolean;\n\n  readonly #clientConfigApiService: AbstractClientConfigApiService;\n\n  #inProgressFlagUpdate?: Promise<ServiceResponse>;\n\n  readonly #getMetaMetricsId: () => string;\n\n  readonly #clientVersion: SemVerVersion;\n\n  /**\n   * Constructs a new RemoteFeatureFlagController instance.\n   *\n   * @param options - The controller options.\n   * @param options.messenger - The messenger used for communication.\n   * @param options.state - The initial state of the controller.\n   * @param options.clientConfigApiService - The service instance to fetch remote feature flags.\n   * @param options.fetchInterval - The interval in milliseconds before cached flags expire. Defaults to 1 day.\n   * @param options.disabled - Determines if the controller should be disabled initially. Defaults to false.\n   * @param options.getMetaMetricsId - Returns metaMetricsId.\n   * @param options.clientVersion - The current client version for version-based feature flag filtering. Must be a valid 3-part SemVer version string.\n   * @param options.prevClientVersion - The previous client version for feature flag cache invalidation.\n   */\n  constructor({\n    messenger,\n    state,\n    clientConfigApiService,\n    fetchInterval = DEFAULT_CACHE_DURATION,\n    disabled = false,\n    getMetaMetricsId,\n    clientVersion,\n    prevClientVersion,\n  }: {\n    messenger: RemoteFeatureFlagControllerMessenger;\n    state?: Partial<RemoteFeatureFlagControllerState>;\n    clientConfigApiService: AbstractClientConfigApiService;\n    getMetaMetricsId: () => string;\n    fetchInterval?: number;\n    disabled?: boolean;\n    clientVersion: string;\n    prevClientVersion?: string;\n  }) {\n    if (!isValidSemVerVersion(clientVersion)) {\n      throw new Error(\n        `Invalid clientVersion: \"${clientVersion}\". Must be a valid 3-part SemVer version string`,\n      );\n    }\n\n    const initialState: RemoteFeatureFlagControllerState = {\n      ...getDefaultRemoteFeatureFlagControllerState(),\n      ...state,\n    };\n\n    const hasClientVersionChanged =\n      isValidSemVerVersion(prevClientVersion) &&\n      prevClientVersion !== clientVersion;\n\n    super({\n      name: controllerName,\n      metadata: remoteFeatureFlagControllerMetadata,\n      messenger,\n      state: {\n        ...initialState,\n        cacheTimestamp: hasClientVersionChanged\n          ? 0\n          : initialState.cacheTimestamp,\n      },\n    });\n\n    this.#fetchInterval = fetchInterval;\n    this.#disabled = disabled;\n    this.#clientConfigApiService = clientConfigApiService;\n    this.#getMetaMetricsId = getMetaMetricsId;\n    this.#clientVersion = clientVersion;\n\n    this.messenger.registerMethodActionHandlers(\n      this,\n      MESSENGER_EXPOSED_METHODS,\n    );\n  }\n\n  /**\n   * Checks if the cached feature flags are expired based on the fetch interval.\n   *\n   * @returns Whether the cache is expired (`true`) or still valid (`false`).\n   */\n  #isCacheExpired(): boolean {\n    return Date.now() - this.state.cacheTimestamp > this.#fetchInterval;\n  }\n\n  /**\n   * Retrieves the remote feature flags, fetching from the API if necessary.\n   * Uses caching to prevent redundant API calls and handles concurrent fetches.\n   *\n   * @returns A promise that resolves to the current set of feature flags.\n   */\n  async updateRemoteFeatureFlags(): Promise<void> {\n    if (this.#disabled || !this.#isCacheExpired()) {\n      return;\n    }\n\n    let serverData;\n\n    if (this.#inProgressFlagUpdate) {\n      await this.#inProgressFlagUpdate;\n      return;\n    }\n\n    try {\n      this.#inProgressFlagUpdate =\n        this.#clientConfigApiService.fetchRemoteFeatureFlags();\n\n      serverData = await this.#inProgressFlagUpdate;\n    } finally {\n      this.#inProgressFlagUpdate = undefined;\n    }\n\n    await this.#updateCache(serverData.remoteFeatureFlags);\n  }\n\n  /**\n   * Updates the controller's state with new feature flags and resets the cache timestamp.\n   *\n   * @param remoteFeatureFlags - The new feature flags to cache.\n   */\n  async #updateCache(remoteFeatureFlags: FeatureFlags): Promise<void> {\n    const { processedFlags, thresholdCacheUpdates } =\n      await this.#processRemoteFeatureFlags(remoteFeatureFlags);\n\n    const metaMetricsId = this.#getMetaMetricsId();\n    const currentFlagNames = Object.keys(remoteFeatureFlags);\n\n    // Build updated threshold cache\n    const updatedThresholdCache = { ...(this.state.thresholdCache ?? {}) };\n\n    // Apply new thresholds\n    for (const [cacheKey, threshold] of Object.entries(thresholdCacheUpdates)) {\n      updatedThresholdCache[cacheKey] = threshold;\n    }\n\n    // Clean up stale entries\n    for (const cacheKey of Object.keys(updatedThresholdCache)) {\n      const [cachedMetaMetricsId, ...cachedFlagNameParts] = cacheKey.split(':');\n      const cachedFlagName = cachedFlagNameParts.join(':');\n      if (\n        cachedMetaMetricsId === metaMetricsId &&\n        !currentFlagNames.includes(cachedFlagName)\n      ) {\n        delete updatedThresholdCache[cacheKey];\n      }\n    }\n\n    // Single state update with all changes batched together\n    this.update(() => {\n      return {\n        ...this.state,\n        remoteFeatureFlags: processedFlags,\n        rawRemoteFeatureFlags: remoteFeatureFlags,\n        cacheTimestamp: Date.now(),\n        thresholdCache: updatedThresholdCache,\n      };\n    });\n  }\n\n  /**\n   * Processes a version-based feature flag to get the appropriate value for the current client version.\n   *\n   * @param flagValue - The feature flag value to process\n   * @returns The processed value, or null if no version qualifies (skip this flag)\n   */\n  #processVersionBasedFlag(flagValue: Json): Json | null {\n    if (!isVersionFeatureFlag(flagValue)) {\n      return flagValue;\n    }\n\n    return getVersionData(flagValue, this.#clientVersion);\n  }\n\n  async #processRemoteFeatureFlags(remoteFeatureFlags: FeatureFlags): Promise<{\n    processedFlags: FeatureFlags;\n    thresholdCacheUpdates: Record<string, number>;\n  }> {\n    const processedFlags: FeatureFlags = {};\n    const metaMetricsId = this.#getMetaMetricsId();\n    const thresholdCacheUpdates: Record<string, number> = {};\n\n    for (const [\n      remoteFeatureFlagName,\n      remoteFeatureFlagValue,\n    ] of Object.entries(remoteFeatureFlags)) {\n      let processedValue = this.#processVersionBasedFlag(\n        remoteFeatureFlagValue,\n      );\n      if (processedValue === null) {\n        continue;\n      }\n\n      if (Array.isArray(processedValue)) {\n        // Validate array has valid threshold items before doing expensive crypto operation\n        const hasValidThresholds = processedValue.some(\n          isFeatureFlagWithScopeValue,\n        );\n\n        if (!hasValidThresholds) {\n          // Not a threshold array - preserve as-is\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Skip threshold processing if metaMetricsId is not available\n        if (!metaMetricsId) {\n          // Preserve array as-is when user hasn't opted into MetaMetrics\n          processedFlags[remoteFeatureFlagName] = processedValue;\n          continue;\n        }\n\n        // Check cache first, calculate only if needed\n        const cacheKey = `${metaMetricsId}:${remoteFeatureFlagName}` as const;\n        let thresholdValue = this.state.thresholdCache?.[cacheKey];\n\n        if (thresholdValue === undefined) {\n          thresholdValue = await calculateThresholdForFlag(\n            metaMetricsId,\n            remoteFeatureFlagName,\n          );\n\n          // Collect new threshold for batched state update\n          thresholdCacheUpdates[cacheKey] = thresholdValue;\n        }\n\n        const threshold = thresholdValue;\n        const selectedGroup = processedValue.find(\n          (featureFlag): featureFlag is FeatureFlagScopeValue => {\n            if (!isFeatureFlagWithScopeValue(featureFlag)) {\n              return false;\n            }\n\n            return threshold <= featureFlag.scope.value;\n          },\n        );\n        if (selectedGroup) {\n          processedValue = {\n            name: selectedGroup.name,\n            value: selectedGroup.value,\n          };\n        }\n      }\n\n      processedFlags[remoteFeatureFlagName] = processedValue;\n    }\n\n    return { processedFlags, thresholdCacheUpdates };\n  }\n\n  /**\n   * Enables the controller, allowing it to make network requests.\n   */\n  enable(): void {\n    this.#disabled = false;\n  }\n\n  /**\n   * Disables the controller, preventing it from making network requests.\n   */\n  disable(): void {\n    this.#disabled = true;\n  }\n\n  /**\n   * Sets a local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to override.\n   * @param value - The override value for the feature flag.\n   */\n  setFlagOverride(flagName: string, value: Json): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {\n          ...this.state.localOverrides,\n          [flagName]: value,\n        },\n      };\n    });\n  }\n\n  /**\n   * Clears the local override for a specific feature flag.\n   *\n   * @param flagName - The name of the feature flag to clear.\n   */\n  removeFlagOverride(flagName: string): void {\n    const newLocalOverrides = { ...this.state.localOverrides };\n    delete newLocalOverrides[flagName];\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: newLocalOverrides,\n      };\n    });\n  }\n\n  /**\n   * Clears all local feature flag overrides.\n   */\n  clearAllFlagOverrides(): void {\n    this.update(() => {\n      return {\n        ...this.state,\n        localOverrides: {},\n      };\n    });\n  }\n}\n"]}

package.json

 {
   "name": "@metamask/remote-feature-flag-controller",
-  "version": "4.1.0",
+  "version": "4.2.0",
   "description": "The RemoteFeatureFlagController manages the retrieval and caching of remote feature flags",
@@ -43,2 +43,3 @@ "keywords": [
     "changelog:validate": "../../scripts/validate-changelog.sh @metamask/remote-feature-flag-controller",
+    "generate-method-action-types": "tsx ../../scripts/generate-method-action-types.ts",
     "since-latest-release": "../../scripts/since-latest-release.sh",
@@ -51,5 +52,5 @@ "test": "NODE_OPTIONS=--experimental-vm-modules jest --reporters=jest-silent-reporter",
   "dependencies": {
-    "@metamask/base-controller": "^9.0.0",
+    "@metamask/base-controller": "^9.0.1",
     "@metamask/controller-utils": "^11.19.0",
-    "@metamask/messenger": "^0.3.0",
+    "@metamask/messenger": "^1.0.0",
     "@metamask/utils": "^11.9.0",
@@ -67,2 +68,3 @@ "uuid": "^8.3.2"
     "ts-jest": "^29.2.5",
+    "tsx": "^4.20.5",
     "typedoc": "^0.25.13",
@@ -69,0 +71,0 @@ "typedoc-plugin-missing-exports": "^2.0.0",

No alert changes

Improved metrics

Total package byte prevSize

245579

5.02%

Number of package files

78

11.43%

Lines of code

1242

2.56%

Worsened metrics

Dev dependency count

12

9.09%

Dependency changes

• - Removed

  @metamask/messenger@0.3.0
  (transitive)

• Updated

  @metamask/base-controller@^9.0.1

• Updated

  @metamask/messenger@^1.0.0