Fix TypeScript 5.9 compatibility and bump @openfeature/core

- Remove explicit IterableIterator return types (TS 5.9 MapIterator change)
- Bump @openfeature/core from ^1.8.1 to ^1.9.0 for web-sdk compatibility
- Add hookData property to test mock (required in @openfeature/core 1.9)

Author: leoromanovsky

packages/browser/package.json

@@ -49,11 +49,11 @@
     "@types/chrome": "^0.1.18"
   },
   "peerDependencies": {
-    "@openfeature/core": "^1.8.0",
+    "@openfeature/core": "^1.9.0",
     "@openfeature/web-sdk": "^1.5.0"
   },
   "devDependencies": {
-    "@openfeature/core": "^1.8.1",
+    "@openfeature/core": "^1.9.0",
     "@openfeature/web-sdk": "^1.5.0",
     "@types/jest": "^30.0.0",
     "@types/node": "^18.0.0",

packages/browser/src/cache/local-storage-assignment-shim.ts

@@ -30,19 +30,19 @@ export class LocalStorageAssignmentShim implements Map<string, string> {
 
   size: number = this.getCache().size
 
-  entries(): IterableIterator<[string, string]> {
+  entries() {
     return this.getCache().entries()
   }
 
-  keys(): IterableIterator<string> {
+  keys() {
     return this.getCache().keys()
   }
 
-  values(): IterableIterator<string> {
+  values() {
     return this.getCache().values()
   }
 
-  [Symbol.iterator](): IterableIterator<[string, string]> {
+  [Symbol.iterator]() {
     return this.getCache()[Symbol.iterator]()
   }
 

packages/browser/test/openfeature/flagEvaluations.spec.ts

@@ -70,6 +70,7 @@ describe('createFlagEvaluationTrackingHook', () => {
         warn: jest.fn(),
         error: jest.fn(),
       } as any,
+      hookData: new Map(),
     }
 
     const mockDetails: EvaluationDetails<boolean> = {

packages/core/package.json

@@ -41,7 +41,7 @@
     "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
-    "@openfeature/core": "^1.8.1",
+    "@openfeature/core": "^1.9.0",
     "@types/jest": "^30.0.0",
     "@types/node": "^18.0.0",
     "@types/spark-md5": "^3.0.5",

packages/core/src/cache/lru-cache.ts

@@ -19,7 +19,7 @@ export class LRUCache implements Map<string, string> {
 
   constructor(protected readonly capacity: number) {}
 
-  [Symbol.iterator](): IterableIterator<[string, string]> {
+  [Symbol.iterator]() {
     return this.cache[Symbol.iterator]()
   }
 
@@ -29,7 +29,7 @@ export class LRUCache implements Map<string, string> {
 
   readonly size: number = this.cache.size
 
-  entries(): IterableIterator<[string, string]> {
+  entries() {
     return this.cache.entries()
   }
 
@@ -41,11 +41,11 @@ export class LRUCache implements Map<string, string> {
     return this.cache.delete(key)
   }
 
-  keys(): IterableIterator<string> {
+  keys() {
     return this.cache.keys()
   }
 
-  values(): IterableIterator<string> {
+  values() {
     return this.cache.values()
   }
 

yarn.lock

@@ -561,7 +561,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@datadog/flagging-core@workspace:packages/core"
   dependencies:
-    "@openfeature/core": "npm:^1.8.1"
+    "@openfeature/core": "npm:^1.9.0"
     "@types/jest": "npm:^30.0.0"
     "@types/node": "npm:^18.0.0"
     "@types/spark-md5": "npm:^3.0.5"
@@ -580,7 +580,7 @@ __metadata:
   dependencies:
     "@datadog/browser-core": "npm:^6.19.0"
     "@datadog/flagging-core": "npm:0.3.3"
-    "@openfeature/core": "npm:^1.8.1"
+    "@openfeature/core": "npm:^1.9.0"
     "@openfeature/web-sdk": "npm:^1.5.0"
     "@types/chrome": "npm:^0.1.18"
     "@types/jest": "npm:^30.0.0"
@@ -594,7 +594,7 @@ __metadata:
     ts-loader: "npm:^9.5.2"
     typescript: "npm:^5.5.0"
   peerDependencies:
-    "@openfeature/core": ^1.8.0
+    "@openfeature/core": ^1.9.0
     "@openfeature/web-sdk": ^1.5.0
   languageName: unknown
   linkType: soft
@@ -1967,20 +1967,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@openfeature/core@npm:1.9.1":
+"@openfeature/core@npm:1.9.1, @openfeature/core@npm:^1.9.0":
   version: 1.9.1
   resolution: "@openfeature/core@npm:1.9.1"
   checksum: 10c0/983c651484621e6e5a3b4bf83fce5398a1adc2ace6162ff5a13a8eaf6d285b7c6b15f5c0a477ece9010ca88b28799985d810047ea0c18324d7a51ac4d04e18d6
   languageName: node
   linkType: hard
 
-"@openfeature/core@npm:^1.8.1":
-  version: 1.8.1
-  resolution: "@openfeature/core@npm:1.8.1"
-  checksum: 10c0/534396e8890858e8aba4ca73062a657b6078f0c94d6f3a041100026ed005183e617c2b6e7076c06cb55d96c9edb296b40653bbb495cf42d036a6a62364b256ea
-  languageName: node
-  linkType: hard
-
 "@openfeature/server-sdk@npm:1.20.1":
   version: 1.20.1
   resolution: "@openfeature/server-sdk@npm:1.20.1"