Use arrow functions

test/playwright/CharWidth.test.ts

@@ -15,7 +15,7 @@ test.afterAll(async () => await ctx.page.close());
 
 test.beforeEach(async () => await ctx.proxy.reset());
 
-test.describe('CharWidth Integration Tests', function(): void {
+test.describe('CharWidth Integration Tests', () => {
   test.describe('getStringCellWidth', () => {
     test('ASCII chars', async () => {
       await ctx.proxy.write('This is just ASCII text.#');

test/playwright/InputHandler.test.ts

@@ -15,7 +15,7 @@ test.beforeAll(async ({ browser }) => {
 test.afterAll(async () => await ctx.page.close());
 
 
-test.describe('InputHandler Integration Tests', function (): void {
+test.describe('InputHandler Integration Tests', () => {
 
   test.describe('CSI', () => {
     test.beforeEach(async () => await ctx.proxy.reset());

test/playwright/MouseTracking.test.ts

@@ -164,8 +164,8 @@ function parseReport(encoding: string, msg: number[]): { state: any, row: number
   }
 }
 
-test.describe('Mouse Tracking Tests', function (): void {
-  test.beforeAll(async function(): Promise<void> {
+test.describe('Mouse Tracking Tests', () => {
+  test.beforeAll(async () => {
     await ctx.page.setViewportSize({ width, height });
     // patch terminal to get the onData calls
     // we encode the msg here to an array of codes to not lose bytes

test/playwright/Parser.test.ts

@@ -26,7 +26,7 @@ declare global {
   }
 }
 
-test.describe('Parser Integration Tests', function (): void {
+test.describe('Parser Integration Tests', () => {
   test.beforeEach(async () => await ctx.proxy.reset());
   test.afterEach(async () => {
     await ctx.page.evaluate(() => {

test/playwright/Terminal.test.ts

@@ -378,7 +378,7 @@ test.describe('API Integration Tests', () => {
       await pollFor(ctx.page, `window.callCount`, 2);
     });
 
-    test('onRender', async function(): Promise<void> {
+    test('onRender', async () => {
       await openTerminal(ctx);
       await timeout(20); // Ensure all init events are fired
       await ctx.page.evaluate(`