diff --git a/package.json b/package.json
index 7127221..aae0592 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "build": "rimraf lib && rollup -c --bundleConfigAsCjs",
     "preparemetadata": "rimraf resources && node tools/prepare.js && rimraf resources/libphonenumber",
     "prepublishOnly": "yarn build",
+    "prettier": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
     "test": "jest",
     "watch": "rimraf lib && rollup -cw"
   },
diff --git a/src/locales.ts b/src/locales.ts
index 9d4412e..0eaf57f 100644
--- a/src/locales.ts
+++ b/src/locales.ts
@@ -1,3 +1,45 @@
 /* THIS FILE IS AUTOGENERATED. */
-export type GeocoderLocale = 'ar' | 'be' | 'bg' | 'bs' | 'de' | 'el' | 'en' | 'es' | 'fa' | 'fi' | 'fr' | 'hr' | 'hu' | 'hy' | 'id' | 'it' | 'iw' | 'ja' | 'ko' | 'nl' | 'pl' | 'pt' | 'ro' | 'ru' | 'sq' | 'sr' | 'sv' | 'th' | 'tr' | 'uk' | 'vi' | 'zh' | 'zh_Hant';
-export type CarrierLocale = 'ar' | 'be' | 'en' | 'fa' | 'ko' | 'ru' | 'uk' | 'zh' | 'zh_Hant';
+export type GeocoderLocale =
+  | 'ar'
+  | 'be'
+  | 'bg'
+  | 'bs'
+  | 'de'
+  | 'el'
+  | 'en'
+  | 'es'
+  | 'fa'
+  | 'fi'
+  | 'fr'
+  | 'hr'
+  | 'hu'
+  | 'hy'
+  | 'id'
+  | 'it'
+  | 'iw'
+  | 'ja'
+  | 'ko'
+  | 'nl'
+  | 'pl'
+  | 'pt'
+  | 'ro'
+  | 'ru'
+  | 'sq'
+  | 'sr'
+  | 'sv'
+  | 'th'
+  | 'tr'
+  | 'uk'
+  | 'vi'
+  | 'zh'
+  | 'zh_Hant'
+export type CarrierLocale =
+  | 'ar'
+  | 'be'
+  | 'en'
+  | 'fa'
+  | 'ko'
+  | 'ru'
+  | 'uk'
+  | 'zh'
+  | 'zh_Hant'
diff --git a/test/carrier.test.ts b/test/carrier.test.ts
new file mode 100644
index 0000000..fea2110
--- /dev/null
+++ b/test/carrier.test.ts
@@ -0,0 +1,10 @@
+import { carrier } from '../src'
+import parsePhoneNumber from 'libphonenumber-js'
+
+describe('Phone Number Lookup', () => {
+  it('should return carrier', async () => {
+    const phoneNumber = parsePhoneNumber('+14158586273')
+    const res = carrier(phoneNumber)
+    expect(res).toEqual(null)
+  })
+})
diff --git a/src/index.test.ts b/test/index.test.ts
similarity index 99%
rename from src/index.test.ts
rename to test/index.test.ts
index daa3551..7d29a72 100644
--- a/src/index.test.ts
+++ b/test/index.test.ts
@@ -3,7 +3,7 @@ import {
   geocoder,
   parsePhoneNumberFromString,
   timezones,
-} from './index'
+} from '../src'
 
 it('geocodes with default locale en', async () => {
   const phoneNr = parsePhoneNumberFromString('+41431234567')