make eslint automatic fixes

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: lukasvice

jestconfig.json

@@ -5,4 +5,4 @@
   },
   "testRegex": "(/__tests?__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
   "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"]
-}
+}

src/index.ts

@@ -1,16 +1,16 @@
 import { IncomingMessage } from 'http'
 import {
-  getCookieFromDocument,
   canUseDOM,
-  setCookie,
+  getCookieFromDocument,
   getCookieFromRequest,
   isEqualCaseInsensitive,
+  setCookie,
 } from './utilities'
 
 class Internationalization<T extends string> {
   private readonly cookieName: string
 
-  supportedLanguages: Array<T>
+  supportedLanguages: T[]
   fallbackLanguage: T
 
   /**
@@ -21,7 +21,7 @@ class Internationalization<T extends string> {
    * @param cookieName { string } - Optional: Set a preferred cookie name
    */
   constructor(
-    supportedLanguages: Array<T>,
+    supportedLanguages: T[],
     fallbackLanguage: T,
     cookieName?: string,
   ) {

src/utilities.ts

@@ -29,7 +29,7 @@ function getCookieFromRequest(
   name: string,
   request: IncomingMessage,
 ): string | undefined {
-  if (request.headers && request.headers.cookie) {
+  if (request.headers?.cookie) {
     const pattern = getCookiePattern(name)
     const matched = request.headers.cookie.match(pattern)
 
@@ -58,10 +58,10 @@ function setCookie(name: string, value: string): void {
  * However, it might be pre-rendered for example on a server.
  */
 function canUseDOM(): boolean {
-  return !!(
-    typeof window != 'undefined' &&
-    window.document &&
-    window.document.createElement
+  return Boolean(
+    typeof window !== 'undefined' &&
+      window.document &&
+      window.document.createElement,
   )
 }
 
@@ -70,9 +70,9 @@ function isEqualCaseInsensitive(a: string, b: string): boolean {
 }
 
 export {
+  canUseDOM,
   getCookieFromDocument,
   getCookieFromRequest,
-  setCookie,
-  canUseDOM,
   isEqualCaseInsensitive,
+  setCookie,
 }