diff --git a/js/js-flipper/src/connection.ts b/js/js-flipper/src/connection.ts
index 8f9a1f48c..ecc5cca26 100644
--- a/js/js-flipper/src/connection.ts
+++ b/js/js-flipper/src/connection.ts
@@ -8,11 +8,18 @@
  */
 
 import {FlipperErrorMessage, FlipperMessageBus} from './message';
-import {FlipperPluginConnection, FlipperPluginReceiver} from './plugin';
+import {
+  FlipperPluginConnection,
+  FlipperPluginReceiver,
+  FlipperPluginReceiverRes,
+} from './plugin';
 import {FlipperResponder} from './responder';
 import {isPromise, safeJSONStringify} from './util';
 
-type FlipperReceiver = (data: unknown, responder: FlipperResponder) => void;
+type FlipperReceiver = (
+  data: FlipperPluginReceiverRes,
+  responder: FlipperResponder,
+) => void;
 
 export class FlipperConnection implements FlipperPluginConnection {
   pluginId: string;
@@ -36,7 +43,10 @@ export class FlipperConnection implements FlipperPluginConnection {
   }
 
   receive(method: string, receiver: FlipperPluginReceiver) {
-    const wrappedReceiver: FlipperReceiver = (data, responder) => {
+    const wrappedReceiver: FlipperReceiver = (
+      data: FlipperPluginReceiverRes,
+      responder,
+    ) => {
       const handleError = (e: unknown) => {
         const errorMessage: FlipperErrorMessage =
           e instanceof Error
@@ -47,7 +57,9 @@ export class FlipperConnection implements FlipperPluginConnection {
       try {
         const response = receiver(data);
         if (isPromise(response)) {
-          response.then((data) => responder.success(data)).catch(handleError);
+          response
+            .then((data: FlipperPluginReceiverRes) => responder.success(data))
+            .catch(handleError);
           return;
         }
         responder.success(response);
diff --git a/js/js-flipper/yarn.lock b/js/js-flipper/yarn.lock
index 9d8108522..bb39505c8 100644
--- a/js/js-flipper/yarn.lock
+++ b/js/js-flipper/yarn.lock
@@ -3635,9 +3635,9 @@ type-fest@^0.21.3:
   integrity sha512-t0rzBq87m3fVcduHDUFhKmyyX+9eo6WQjZvf51Ea/M0Q7+T374Jp1aUiyUl0GKxp8M/OETVHSDvmkyPgvX+X2w==
 
 typescript@^4.7.3:
-  version "4.7.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.7.4.tgz#1a88596d1cf47d59507a1bcdfb5b9dfe4d488235"
-  integrity sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==
+  version "4.8.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.8.4.tgz#c464abca159669597be5f96b8943500b238e60e6"
+  integrity sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==
 
 unbox-primitive@^1.0.2:
   version "1.0.2"