diff --git a/packages/grpc-js/prettier.config.js b/packages/grpc-js/prettier.config.js
new file mode 100644
index 00000000..92747c8c
--- /dev/null
+++ b/packages/grpc-js/prettier.config.js
@@ -0,0 +1,5 @@
+module.exports = {
+  proseWrap: 'always',
+  singleQuote: true,
+  trailingComma: 'es5',
+};
diff --git a/packages/grpc-js/src/load-balancer-round-robin.ts b/packages/grpc-js/src/load-balancer-round-robin.ts
index 72af705d..9faf872f 100644
--- a/packages/grpc-js/src/load-balancer-round-robin.ts
+++ b/packages/grpc-js/src/load-balancer-round-robin.ts
@@ -107,7 +107,7 @@ export class RoundRobinLoadBalancer implements LoadBalancer {
   private calculateAndUpdateState() {
     if (this.subchannelStateCounts[ConnectivityState.READY] > 0) {
       const readySubchannels = this.subchannels.filter(subchannel => subchannel.getConnectivityState() === ConnectivityState.READY);
-      let index: number = 0;
+      let index = 0;
       if (this.currentReadyPicker !== null) {
         index = readySubchannels.indexOf(this.currentReadyPicker.peekNextSubchannel());
         if (index < 0) {
diff --git a/packages/grpc-js/src/make-client.ts b/packages/grpc-js/src/make-client.ts
index fc44c674..5e9d6711 100644
--- a/packages/grpc-js/src/make-client.ts
+++ b/packages/grpc-js/src/make-client.ts
@@ -39,6 +39,7 @@ export interface MethodDefinition<RequestType, ResponseType> {
 }
 
 export interface ServiceDefinition {
+  // tslint:disable-next-line no-any
   [index: string]: MethodDefinition<any, any>;
 }
 
diff --git a/packages/grpc-js/src/subchannel.ts b/packages/grpc-js/src/subchannel.ts
index a52c3477..3ca2aa3f 100644
--- a/packages/grpc-js/src/subchannel.ts
+++ b/packages/grpc-js/src/subchannel.ts
@@ -100,7 +100,7 @@ export class Subchannel {
    * socket disconnects. Used for ending active calls with an UNAVAILABLE
    * status.
    */
-  private disconnectListeners: (() => void)[] = [];
+  private disconnectListeners: Array<() => void> = [];
 
   private backoffTimeout: BackoffTimeout;
 
diff --git a/packages/grpc-js/test/test-resolver.ts b/packages/grpc-js/test/test-resolver.ts
index 790cd459..aca2152c 100644
--- a/packages/grpc-js/test/test-resolver.ts
+++ b/packages/grpc-js/test/test-resolver.ts
@@ -22,14 +22,14 @@ import * as resolverManager from '../src/resolver';
 import { ServiceConfig } from '../src/service-config';
 import { StatusObject } from '../src/call-stream';
 
-describe('Name Resolver', function() {
+describe('Name Resolver', () => {
   describe('DNS Names', function() {
     // For some reason DNS queries sometimes take a long time on Windows
     this.timeout(4000);
-    before(function() {
+    before(() => {
       resolverManager.registerAll();
     });
-    it('Should resolve localhost properly', function(done) {
+    it('Should resolve localhost properly', (done) => {
       const target = 'localhost:50051';
       const listener: resolverManager.ResolverListener = {
         onSuccessfulResolution: (
@@ -48,7 +48,7 @@ describe('Name Resolver', function() {
       const resolver = resolverManager.createResolver(target, listener);
       resolver.updateResolution();
     });
-    it('Should default to port 443', function(done) {
+    it('Should default to port 443', (done) => {
       const target = 'localhost';
       const listener: resolverManager.ResolverListener = {
         onSuccessfulResolution: (
@@ -67,7 +67,7 @@ describe('Name Resolver', function() {
       const resolver = resolverManager.createResolver(target, listener);
       resolver.updateResolution();
     });
-    it('Should resolve a public address', function(done) {
+    it('Should resolve a public address', (done) => {
       const target = 'example.com';
       const listener: resolverManager.ResolverListener = {
         onSuccessfulResolution: (
@@ -85,7 +85,7 @@ describe('Name Resolver', function() {
       const resolver = resolverManager.createResolver(target, listener);
       resolver.updateResolution();
     });
-    it('Should resolve a name with multiple dots', function(done) {
+    it('Should resolve a name with multiple dots', (done) => {
       const target = 'loopback4.unittest.grpc.io';
       const listener: resolverManager.ResolverListener = {
         onSuccessfulResolution: (
@@ -103,7 +103,7 @@ describe('Name Resolver', function() {
       const resolver = resolverManager.createResolver(target, listener);
       resolver.updateResolution();
     });
-    it('Should resolve a name with a hyphen', function(done) {
+    it('Should resolve a name with a hyphen', (done) => {
       /* TODO(murgatroid99): Find or create a better domain name to test this with.
        * This is just the first one I found with a hyphen. */
       const target = 'network-tools.com';
@@ -123,7 +123,7 @@ describe('Name Resolver', function() {
       const resolver = resolverManager.createResolver(target, listener);
       resolver.updateResolution();
     });
-    it('Should resolve gRPC interop servers', function(done) {
+    it('Should resolve gRPC interop servers', (done) => {
       let completeCount = 0;
       function done2(error?: Error) {
         if (error) {
@@ -156,7 +156,7 @@ describe('Name Resolver', function() {
       resolver2.updateResolution();
     })
   });
-  describe('UDS Names', function() {
+  describe('UDS Names', () => {
     it('Should handle a relative Unix Domain Socket name', done => {
       const target = 'unix:socket';
       const listener: resolverManager.ResolverListener = {
diff --git a/packages/grpc-js/tsconfig.json b/packages/grpc-js/tsconfig.json
index e47c5eea..f60cbdc0 100644
--- a/packages/grpc-js/tsconfig.json
+++ b/packages/grpc-js/tsconfig.json
@@ -2,19 +2,13 @@
   "extends": "./node_modules/gts/tsconfig-google.json",
   "compilerOptions": {
     "lib": ["es2017"],
-    "rootDir": ".",
     "outDir": "build",
     "target": "es2017",
     "module": "commonjs",
     "incremental": true
   },
   "include": [
-    "src/*.ts",
     "src/**/*.ts",
-    "test/*.ts",
     "test/**/*.ts"
-  ],
-  "exclude": [
-    "node_modules"
   ]
 }
diff --git a/packages/grpc-js/tslint.json b/packages/grpc-js/tslint.json
new file mode 100644
index 00000000..27872a13
--- /dev/null
+++ b/packages/grpc-js/tslint.json
@@ -0,0 +1,8 @@
+{
+  "extends": "gts/tslint.json",
+  "linterOptions": {
+    "exclude": [
+      "**/*.json"
+    ]
+  }
+}