diff --git a/package.json b/package.json
index c3d360423..8236920ef 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "publish-all": "npm run publish-if-not-exists --workspace=packages/shared --workspace=packages/server --workspace=packages/client --workspace=packages/react",
     "docs": "typedoc",
     "core-version": "npm run version --workspace=packages/shared",
-    "update-core-peers": "export OPENFEATURE_CORE_VERSION=$(npm run --silent core-version) && npm run update-core-peer --workspace=packages/server --workspace=packages/client --workspace=packages/react"
+    "update-core-peers": "export OPENFEATURE_CORE_VERSION=$(npm run --silent core-version) && npm run update-core-peer --workspace=packages/server --workspace=packages/client"
   },
   "repository": {
     "type": "git",
diff --git a/packages/react/package.json b/packages/react/package.json
index f36974368..c8c737965 100644
--- a/packages/react/package.json
+++ b/packages/react/package.json
@@ -24,8 +24,7 @@
     "postbuild": "shx cp ./../../package.esm.json ./dist/esm/package.json",
     "current-version": "echo $npm_package_version",
     "prepack": "shx cp ./../../LICENSE ./LICENSE",
-    "publish-if-not-exists": "cp $NPM_CONFIG_USERCONFIG .npmrc && if [ \"$(npm show $npm_package_name@$npm_package_version version)\" = \"$(npm run current-version -s)\" ]; then echo 'already published, skipping'; else npm publish --access public; fi",
-    "update-core-peer": "npm install --save-peer --save-exact @openfeature/core@$OPENFEATURE_CORE_VERSION"
+    "publish-if-not-exists": "cp $NPM_CONFIG_USERCONFIG .npmrc && if [ \"$(npm show $npm_package_name@$npm_package_version version)\" = \"$(npm run current-version -s)\" ]; then echo 'already published, skipping'; else npm publish --access public; fi"
   },
   "repository": {
     "type": "git",
@@ -47,12 +46,11 @@
   },
   "homepage": "https://github.com/open-feature/js-sdk#readme",
   "peerDependencies": {
-    "@openfeature/core": "0.0.19",
     "@openfeature/web-sdk": ">=0.4.0",
     "react": ">=18.0.0"
   },
   "devDependencies": {
-    "@openfeature/core": "0.0.19",
+    "@openfeature/core": "*",
     "@openfeature/web-sdk": "*"
   }
 }
diff --git a/packages/shared/src/events/generic-event-emitter.ts b/packages/shared/src/events/generic-event-emitter.ts
index dbeaf889a..6c30b1d7c 100644
--- a/packages/shared/src/events/generic-event-emitter.ts
+++ b/packages/shared/src/events/generic-event-emitter.ts
@@ -9,7 +9,7 @@ import { ProviderEvents } from './events';
 export abstract class GenericEventEmitter<AdditionalContext extends Record<string, unknown> = Record<string, unknown>>
   implements ManageLogger<GenericEventEmitter<AdditionalContext>>
 {
-  protected abstract readonly eventEmitter: NodeJS.EventEmitter;
+  protected abstract readonly eventEmitter: PlatformEventEmitter;
 
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   private readonly _handlers = new WeakMap<EventHandler<any>, EventHandler<any>>();
@@ -64,4 +64,29 @@ export abstract class GenericEventEmitter<AdditionalContext extends Record<strin
   protected get _logger() {
     return this._eventLogger ?? this.globalLogger?.();
   }
+}
+
+/**
+ * This is an un-exported type that corresponds to NodeJS.EventEmitter.
+ * We can't use that type here, because this module is used in both the browser, and the server.
+ * In the server, node (or whatever server runtime) provides an implementation for this.
+ * In the browser, we bundle in the popular 'events' package, which is a polyfill of NodeJS.EventEmitter.
+ */
+/* eslint-disable */
+interface PlatformEventEmitter {
+  addListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  on(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  removeListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  off(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  removeAllListeners(event?: string | symbol): this;
+  setMaxListeners(n: number): this;
+  getMaxListeners(): number;
+  listeners(eventName: string | symbol): Function[];
+  rawListeners(eventName: string | symbol): Function[];
+  emit(eventName: string | symbol, ...args: any[]): boolean;
+  listenerCount(eventName: string | symbol, listener?: Function): number;
+  prependListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  prependOnceListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+  eventNames(): Array<string | symbol>;
 }
\ No newline at end of file