diff --git a/packages/grpc-js/src/channel-options.ts b/packages/grpc-js/src/channel-options.ts
index cf310319..1120ab84 100644
--- a/packages/grpc-js/src/channel-options.ts
+++ b/packages/grpc-js/src/channel-options.ts
@@ -90,7 +90,7 @@ export const recognizedOptions = {
   'grpc.max_connection_age_grace_ms': true,
   'grpc-node.max_session_memory': true,
   'grpc.service_config_disable_resolution': true,
-  'grpc.client_idle_timeout_ms': true
+  'grpc.client_idle_timeout_ms': true,
 };
 
 export function channelOptionsEqual(
diff --git a/packages/grpc-js/src/internal-channel.ts b/packages/grpc-js/src/internal-channel.ts
index 6a11028e..1eff3cf2 100644
--- a/packages/grpc-js/src/internal-channel.ts
+++ b/packages/grpc-js/src/internal-channel.ts
@@ -20,7 +20,12 @@ import { ChannelOptions } from './channel-options';
 import { ResolvingLoadBalancer } from './resolving-load-balancer';
 import { SubchannelPool, getSubchannelPool } from './subchannel-pool';
 import { ChannelControlHelper } from './load-balancer';
-import { UnavailablePicker, Picker, PickResultType, QueuePicker } from './picker';
+import {
+  UnavailablePicker,
+  Picker,
+  PickResultType,
+  QueuePicker,
+} from './picker';
 import { Metadata } from './metadata';
 import { Status, LogVerbosity, Propagate } from './constants';
 import { FilterStackFactory } from './filter-stack';
@@ -191,9 +196,10 @@ export class InternalChannel {
   private currentResolutionError: StatusObject | null = null;
   private readonly retryBufferTracker: MessageBufferTracker;
   private keepaliveTime: number;
-  private readonly wrappedSubchannels: Set<ChannelSubchannelWrapper> = new Set();
+  private readonly wrappedSubchannels: Set<ChannelSubchannelWrapper> =
+    new Set();
 
-  private callCount: number = 0;
+  private callCount = 0;
   private idleTimer: NodeJS.Timer | null = null;
   private readonly idleTimeoutMs: number;
 
@@ -274,7 +280,10 @@ export class InternalChannel {
         DEFAULT_PER_RPC_RETRY_BUFFER_SIZE_BYTES
     );
     this.keepaliveTime = options['grpc.keepalive_time_ms'] ?? -1;
-    this.idleTimeoutMs = Math.max(options['grpc.client_idle_timeout_ms'] ?? DEFAULT_IDLE_TIMEOUT_MS, MIN_IDLE_TIMEOUT_MS);
+    this.idleTimeoutMs = Math.max(
+      options['grpc.client_idle_timeout_ms'] ?? DEFAULT_IDLE_TIMEOUT_MS,
+      MIN_IDLE_TIMEOUT_MS
+    );
     const channelControlHelper: ChannelControlHelper = {
       createSubchannel: (
         subchannelAddress: SubchannelAddress,
@@ -567,7 +576,11 @@ export class InternalChannel {
   private maybeStartIdleTimer() {
     if (this.callCount === 0) {
       this.idleTimer = setTimeout(() => {
-        this.trace('Idle timer triggered after ' + this.idleTimeoutMs + 'ms of inactivity');
+        this.trace(
+          'Idle timer triggered after ' +
+            this.idleTimeoutMs +
+            'ms of inactivity'
+        );
         this.enterIdle();
       }, this.idleTimeoutMs);
       this.idleTimer.unref?.();
diff --git a/packages/grpc-js/test/common.ts b/packages/grpc-js/test/common.ts
index 14fec91f..26192d3e 100644
--- a/packages/grpc-js/test/common.ts
+++ b/packages/grpc-js/test/common.ts
@@ -20,7 +20,12 @@ import * as assert2 from './assert2';
 import * as path from 'path';
 import * as grpc from '../src';
 
-import { GrpcObject, ServiceClientConstructor, ServiceClient, loadPackageDefinition } from '../src/make-client';
+import {
+  GrpcObject,
+  ServiceClientConstructor,
+  ServiceClient,
+  loadPackageDefinition,
+} from '../src/make-client';
 import { readFileSync } from 'fs';
 
 const protoLoaderOptions = {
@@ -67,7 +72,9 @@ export class TestServer {
   start(): Promise<void> {
     let credentials: grpc.ServerCredentials;
     if (this.useTls) {
-      credentials = grpc.ServerCredentials.createSsl(null, [{private_key: key, cert_chain: cert}]);
+      credentials = grpc.ServerCredentials.createSsl(null, [
+        { private_key: key, cert_chain: cert },
+      ]);
     } else {
       credentials = grpc.ServerCredentials.createInsecure();
     }
diff --git a/packages/grpc-js/test/test-idle-timer.ts b/packages/grpc-js/test/test-idle-timer.ts
index 646d0e07..3fdeb1f6 100644
--- a/packages/grpc-js/test/test-idle-timer.ts
+++ b/packages/grpc-js/test/test-idle-timer.ts
@@ -17,7 +17,7 @@
 
 import * as assert from 'assert';
 import * as grpc from '../src';
-import { TestClient, TestServer } from "./common";
+import { TestClient, TestServer } from './common';
 
 describe('Channel idle timer', () => {
   let server: TestServer;
@@ -31,30 +31,46 @@ describe('Channel idle timer', () => {
       client.close();
       client = null;
     }
-  })
+  });
   after(() => {
     server.shutdown();
   });
-  it('Should go idle after the specified time after a request ends', function(done) {
+  it('Should go idle after the specified time after a request ends', function (done) {
     this.timeout(5000);
-    client = TestClient.createFromServer(server, {'grpc.client_idle_timeout_ms': 1000});
+    client = TestClient.createFromServer(server, {
+      'grpc.client_idle_timeout_ms': 1000,
+    });
     client.sendRequest(error => {
       assert.ifError(error);
-      assert.strictEqual(client!.getChannelState(), grpc.connectivityState.READY);
+      assert.strictEqual(
+        client!.getChannelState(),
+        grpc.connectivityState.READY
+      );
       setTimeout(() => {
-        assert.strictEqual(client!.getChannelState(), grpc.connectivityState.IDLE);
+        assert.strictEqual(
+          client!.getChannelState(),
+          grpc.connectivityState.IDLE
+        );
         done();
       }, 1100);
     });
   });
-  it('Should be able to make a request after going idle', function(done) {
+  it('Should be able to make a request after going idle', function (done) {
     this.timeout(5000);
-    client = TestClient.createFromServer(server, {'grpc.client_idle_timeout_ms': 1000});
+    client = TestClient.createFromServer(server, {
+      'grpc.client_idle_timeout_ms': 1000,
+    });
     client.sendRequest(error => {
       assert.ifError(error);
-      assert.strictEqual(client!.getChannelState(), grpc.connectivityState.READY);
+      assert.strictEqual(
+        client!.getChannelState(),
+        grpc.connectivityState.READY
+      );
       setTimeout(() => {
-        assert.strictEqual(client!.getChannelState(), grpc.connectivityState.IDLE);
+        assert.strictEqual(
+          client!.getChannelState(),
+          grpc.connectivityState.IDLE
+        );
         client!.sendRequest(error => {
           assert.ifError(error);
           done();
@@ -62,34 +78,53 @@ describe('Channel idle timer', () => {
       }, 1100);
     });
   });
-  it('Should go idle after the specified time after waitForReady ends', function(done) {
+  it('Should go idle after the specified time after waitForReady ends', function (done) {
     this.timeout(5000);
-    client = TestClient.createFromServer(server, {'grpc.client_idle_timeout_ms': 1000});
+    client = TestClient.createFromServer(server, {
+      'grpc.client_idle_timeout_ms': 1000,
+    });
     const deadline = new Date();
     deadline.setSeconds(deadline.getSeconds() + 3);
     client.waitForReady(deadline, error => {
       assert.ifError(error);
-      assert.strictEqual(client!.getChannelState(), grpc.connectivityState.READY);
+      assert.strictEqual(
+        client!.getChannelState(),
+        grpc.connectivityState.READY
+      );
       setTimeout(() => {
-        assert.strictEqual(client!.getChannelState(), grpc.connectivityState.IDLE);
+        assert.strictEqual(
+          client!.getChannelState(),
+          grpc.connectivityState.IDLE
+        );
         done();
       }, 1100);
     });
   });
-  it('Should ensure that the timeout is at least 1 second', function(done) {
-    client = TestClient.createFromServer(server, {'grpc.client_idle_timeout_ms': 50});
+  it('Should ensure that the timeout is at least 1 second', function (done) {
+    client = TestClient.createFromServer(server, {
+      'grpc.client_idle_timeout_ms': 50,
+    });
     client.sendRequest(error => {
       assert.ifError(error);
-      assert.strictEqual(client!.getChannelState(), grpc.connectivityState.READY);
+      assert.strictEqual(
+        client!.getChannelState(),
+        grpc.connectivityState.READY
+      );
       setTimeout(() => {
         // Should still be ready after 100ms
-        assert.strictEqual(client!.getChannelState(), grpc.connectivityState.READY);
+        assert.strictEqual(
+          client!.getChannelState(),
+          grpc.connectivityState.READY
+        );
         setTimeout(() => {
           // Should go IDLE after another second
-          assert.strictEqual(client!.getChannelState(), grpc.connectivityState.IDLE);
+          assert.strictEqual(
+            client!.getChannelState(),
+            grpc.connectivityState.IDLE
+          );
           done();
         }, 1000);
       }, 100);
     });
-  })
-});
\ No newline at end of file
+  });
+});