Catch unhandled rejection on fire-and-forget AsyncStorage.setItem

.github/actions/setup/action.yml

@@ -7,7 +7,7 @@ runs:
     - name: Setup Node.js
       uses: actions/setup-node@v3
       with:
-        node-version: '18.x'  # Specify the Node.js version directly here
+        node-version: '20.x'  # Specify the Node.js version directly here
 
     - name: Cache dependencies
       id: yarn-cache

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18'
+          node-version: '20'
 
       - name: Setup
         uses: ./.github/actions/setup
@@ -68,7 +68,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18'
+          node-version: '20'
 
       - name: Setup
         uses: ./.github/actions/setup
@@ -91,7 +91,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '18'
+          node-version: '20'
 
       - name: Setup
         uses: ./.github/actions/setup

.github/workflows/publish.yaml

@@ -33,7 +33,7 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: '18.x'
+          node-version: '20.x'
       - run: yarn install
       - run: yarn test
       - run: yarn prepack

.nvmrc

@@ -1 +1 @@
-16.20.2
+20

babel.config.js

@@ -1,3 +1,3 @@
 module.exports = {
-  presets: ['module:metro-react-native-babel-preset'],
+  presets: ['module:@react-native/babel-preset'],
 };

example/package.json

@@ -15,7 +15,7 @@
     "@react-navigation/bottom-tabs": "^7.4.0",
     "@react-navigation/elements": "^2.6.3",
     "@react-navigation/native": "^7.1.8",
-    "expo": "~54.0.31",
+    "expo": "~54.0.34",
     "expo-constants": "~18.0.13",
     "expo-font": "~14.0.10",
     "expo-haptics": "~15.0.8",
@@ -31,17 +31,21 @@
     "react-dom": "19.1.0",
     "react-native": "0.81.5",
     "react-native-gesture-handler": "~2.28.0",
-    "react-native-worklets": "0.5.1",
     "react-native-reanimated": "~4.1.1",
     "react-native-safe-area-context": "~5.6.0",
     "react-native-screens": "~4.16.0",
-    "react-native-web": "~0.21.0"
+    "react-native-web": "~0.21.0",
+    "react-native-worklets": "0.5.1"
   },
   "devDependencies": {
     "@types/react": "~19.1.0",
-    "typescript": "~5.9.2",
     "eslint": "^9.25.0",
-    "eslint-config-expo": "~10.0.0"
+    "eslint-config-expo": "~10.0.0",
+    "typescript": "~5.9.2"
+  },
+  "resolutions": {
+    "postcss": "^8.5.10",
+    "uuid": "^11.1.1"
   },
   "private": true
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@eppo/react-native-sdk",
-  "version": "3.8.0",
+  "version": "4.0.0",
   "description": "Eppo React Native SDK",
   "main": "lib/commonjs/index",
   "module": "lib/module/index",
@@ -51,45 +51,40 @@
     "registry": "https://registry.npmjs.org/"
   },
   "dependencies": {
-    "@eppo/js-client-sdk-common": "4.15.1",
-    "@react-native-async-storage/async-storage": "^1.18.0",
+    "@eppo/js-client-sdk-common": "5.0.0",
+    "@react-native-async-storage/async-storage": "^2.2.0",
     "spark-md5": "^3.0.2"
   },
   "devDependencies": {
-    "@evilmartians/lefthook": "^1.2.2",
-    "@react-native-community/eslint-config": "^3.0.2",
-    "@types/express": "^4.17.13",
-    "@types/jest": "^28.1.2",
-    "@types/react": "~17.0.21",
-    "@types/react-native": "0.70.0",
+    "@evilmartians/lefthook": "^1.13.6",
+    "@types/jest": "^30.0.0",
+    "@types/react": "^19.2.0",
     "@types/spark-md5": "^3.0.5",
-    "del-cli": "^5.0.0",
-    "eslint": "^8.4.1",
-    "eslint-config-prettier": "^8.5.0",
-    "eslint-plugin-prettier": "^4.0.0",
-    "express": "^4.18.0",
-    "jest": "^29.7.0",
-    "pod-install": "^0.1.0",
-    "prettier": "^2.0.5",
-    "react": "18.2.0",
-    "react-native": "0.71.3",
-    "react-native-builder-bob": "^0.20.0",
-    "testdouble": "^3.16.4",
-    "typescript": "^4.5.2"
-  },
-  "resolutions": {
-    "@types/react": "17.0.21",
-    "micromatch": "4.0.8"
+    "@typescript-eslint/eslint-plugin": "^8.59.1",
+    "@typescript-eslint/parser": "^8.59.1",
+    "@babel/core": "^7.29.0",
+    "@react-native/babel-preset": "0.85.3",
+    "@react-native/jest-preset": "0.85.3",
+    "eslint": "^8.57.1",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-prettier": "^5.5.5",
+    "jest": "^30.4.0",
+    "prettier": "^3.8.0",
+    "react": "19.2.3",
+    "react-native": "0.85.3",
+    "react-native-builder-bob": "^0.41.0",
+    "testdouble": "^3.20.0",
+    "typescript": "^5.9.2"
   },
   "peerDependencies": {
     "react": "*",
     "react-native": "*"
   },
   "engines": {
-    "node": ">= 18.0.0"
+    "node": ">= 20.0.0"
   },
   "jest": {
-    "preset": "react-native",
+    "preset": "@react-native/jest-preset",
     "testMatch": [
       "<rootDir>/src/__tests__/**/*.(spec|test).[jt]s?(x)"
     ],
@@ -103,8 +98,14 @@
   },
   "eslintConfig": {
     "root": true,
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+      "@typescript-eslint",
+      "prettier"
+    ],
     "extends": [
-      "@react-native-community",
+      "eslint:recommended",
+      "plugin:@typescript-eslint/recommended",
       "prettier"
     ],
     "rules": {
@@ -117,15 +118,27 @@
           "trailingComma": "es5",
           "useTabs": false
         }
+      ],
+      "@typescript-eslint/no-require-imports": "off",
+      "@typescript-eslint/no-explicit-any": "off",
+      "@typescript-eslint/no-unused-vars": [
+        "error",
+        {
+          "argsIgnorePattern": "^_",
+          "varsIgnorePattern": "^_"
+        }
       ]
     },
     "env": {
-      "jest": true
+      "jest": true,
+      "node": true,
+      "es2022": true
     }
   },
   "eslintIgnore": [
     "node_modules/",
-    "lib/"
+    "lib/",
+    "example/"
   ],
   "prettier": {
     "quoteProps": "consistent",

src/__tests__/index.test.tsx

@@ -1,11 +1,11 @@
 import * as td from 'testdouble';
 
 import type { EppoAsyncStorage } from 'src/async-storage';
-import {
-  VariationType,
+import { VariationType } from '@eppo/js-client-sdk-common';
+import type {
   Flag,
   IAssignmentLogger,
-  type IAssignmentEvent,
+  IAssignmentEvent,
   IPrecomputedConfigurationResponse,
 } from '@eppo/js-client-sdk-common';
 import {

src/async-storage.ts

@@ -40,18 +40,20 @@ class AsyncStorageStore<T> implements ISyncStore<T> {
   }
 
   public setEntries(entries: Record<string, T>): void {
-    for (var key in entries) {
+    for (const key in entries) {
       this.cache[key] = entries[key];
     }
 
-    AsyncStorage.setItem(STORAGE_KEY, JSON.stringify(this.cache));
+    AsyncStorage.setItem(STORAGE_KEY, JSON.stringify(this.cache)).catch(
+      console.error
+    );
     this._isInitialized = true;
   }
 }
 
-export class EppoAsyncStorage
-  implements IConfigurationStore<Flag | ObfuscatedFlag>
-{
+export class EppoAsyncStorage implements IConfigurationStore<
+  Flag | ObfuscatedFlag
+> {
   servingStore: ISyncStore<Flag | ObfuscatedFlag>;
   persistentStore: IAsyncStore<Flag | ObfuscatedFlag> | null;
   private initialized: boolean;

src/cache/async-storage-assignment-shim.ts

@@ -45,19 +45,19 @@ export class AsyncStorageAssignmentShim implements Map<string, string> {
     return this.cache.size;
   }
 
-  entries(): IterableIterator<[string, string]> {
+  entries() {
     return this.cache.entries();
   }
 
-  keys(): IterableIterator<string> {
+  keys() {
     return this.cache.keys();
   }
 
-  values(): IterableIterator<string> {
+  values() {
     return this.cache.values();
   }
 
-  [Symbol.iterator](): IterableIterator<[string, string]> {
+  [Symbol.iterator]() {
     return this.cache[Symbol.iterator]();
   }
 

src/cache/simple-assignment-cache.ts

@@ -1,8 +1,8 @@
 import {
   AbstractAssignmentCache,
   NonExpiringInMemoryAssignmentCache,
-  AssignmentCacheEntry,
 } from '@eppo/js-client-sdk-common';
+import type { AssignmentCacheEntry } from '@eppo/js-client-sdk-common';
 
 import type {
   BulkReadAssignmentCache,

src/index.tsx

@@ -1,15 +1,17 @@
 import {
-  IAssignmentLogger,
-  IAssignmentEvent,
   validation,
   EppoClient,
+  EppoPrecomputedClient,
+  MemoryOnlyConfigurationStore,
+} from '@eppo/js-client-sdk-common';
+import type {
+  IAssignmentLogger,
+  IAssignmentEvent,
   FlagConfigurationRequestParameters,
   IAssignmentDetails,
-  EppoPrecomputedClient,
   IConfigurationStore,
   IObfuscatedPrecomputedBandit,
   PrecomputedFlag,
-  MemoryOnlyConfigurationStore,
   PrecomputedFlagsRequestParameters,
   Subject,
   AttributeType,
@@ -32,11 +34,11 @@ import HybridAssignmentCache from './cache/hybrid-assignment-cache';
 
 import SparkMD5 from 'spark-md5';
 
-export {
+export { EppoClient };
+export type {
   IAssignmentDetails,
   IAssignmentLogger,
   IAssignmentEvent,
-  EppoClient,
   IClientConfig,
   IPrecomputedClientConfig,
 

tsconfig.json

@@ -7,7 +7,7 @@
     "allowUnreachableCode": false,
     "allowUnusedLabels": false,
     "esModuleInterop": true,
-    "importsNotUsedAsValues": "error",
+    "verbatimModuleSyntax": true,
     "forceConsistentCasingInFileNames": true,
     "jsx": "react",
     "lib": ["esnext"],