diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..1b07c39
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,3 @@
+# Ignore artifacts:
+build
+coverage
\ No newline at end of file
diff --git a/.prettierrc b/.prettierrc
index b06ca2e..0967ef4 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -1,6 +1 @@
-{
-  "printWidth": 100,
-  "useTabs": false,
-  "tabWidth": 4,
-  "singleQuote": true
-}
+{}
diff --git a/package-lock.json b/package-lock.json
index b0957af..12b19e0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,7 @@
                 "@types/node": "^20.8.7",
                 "chokidar": "^3.5.3",
                 "jest": "^29.7.0",
+                "prettier": "3.0.3",
                 "rimraf": "^5.0.5",
                 "ts-loader": "^9.5.0",
                 "ts-node": "^10.9.1",
@@ -5422,6 +5423,21 @@
                 "node": ">=8"
             }
         },
+        "node_modules/prettier": {
+            "version": "3.0.3",
+            "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.3.tgz",
+            "integrity": "sha512-L/4pUDMxcNa8R/EthV08Zt42WBO4h1rarVtK0K+QJG0X187OLo7l699jWw0GKuwzkPQ//jMFA/8Xm6Fh3J/DAg==",
+            "dev": true,
+            "bin": {
+                "prettier": "bin/prettier.cjs"
+            },
+            "engines": {
+                "node": ">=14"
+            },
+            "funding": {
+                "url": "https://github.com/prettier/prettier?sponsor=1"
+            }
+        },
         "node_modules/pretty-format": {
             "version": "29.7.0",
             "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-29.7.0.tgz",
@@ -10752,6 +10768,12 @@
                 "find-up": "^4.0.0"
             }
         },
+        "prettier": {
+            "version": "3.0.3",
+            "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.3.tgz",
+            "integrity": "sha512-L/4pUDMxcNa8R/EthV08Zt42WBO4h1rarVtK0K+QJG0X187OLo7l699jWw0GKuwzkPQ//jMFA/8Xm6Fh3J/DAg==",
+            "dev": true
+        },
         "pretty-format": {
             "version": "29.7.0",
             "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-29.7.0.tgz",
diff --git a/package.json b/package.json
index bde4bf9..6bfce2b 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
         "@types/node": "^20.8.7",
         "chokidar": "^3.5.3",
         "jest": "^29.7.0",
+        "prettier": "3.0.3",
         "rimraf": "^5.0.5",
         "ts-loader": "^9.5.0",
         "ts-node": "^10.9.1",
diff --git a/src/getCities.ts b/src/getCities.ts
index a4be6e7..96d96ba 100644
--- a/src/getCities.ts
+++ b/src/getCities.ts
@@ -1,17 +1,19 @@
-import { City } from './types/city';
-import { writeFileSync } from 'fs';
+import { City } from "./types/city";
+import { writeFileSync } from "fs";
 
-const FILE_PATH = 'src/cities.json';
+const FILE_PATH = "src/cities.json";
 export const getCitiesDataToJson = async (): Promise<void> => {
-    const response = await fetch('https://opendata.cbs.nl/ODataApi/OData/85516NED/Woonplaatsen');
-    const json = await response.json();
-    const mappedJson = json.value.map((city: any): City => {
-        return {
-            key: city.Key,
-            title: city.Title,
-            categoryGroupId: city.CategoryGroupID,
-        };
-    }) as City[];
-    writeFileSync(FILE_PATH, JSON.stringify(mappedJson), 'utf8');
+  const response = await fetch(
+    "https://opendata.cbs.nl/ODataApi/OData/85516NED/Woonplaatsen",
+  );
+  const json = await response.json();
+  const mappedJson = json.value.map((city: any): City => {
+    return {
+      key: city.Key,
+      title: city.Title,
+      categoryGroupId: city.CategoryGroupID,
+    };
+  }) as City[];
+  writeFileSync(FILE_PATH, JSON.stringify(mappedJson), "utf8");
 };
 getCitiesDataToJson();
diff --git a/src/index.ts b/src/index.ts
index d580bb8..c86ba9c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,11 +1,15 @@
-import { City } from './types/city';
-import { searchCity } from './search';
+import { City } from "./types/city";
+import { searchCity } from "./search";
 
-import * as cities from './cities.json';
+import * as cities from "./cities.json";
 
-export const searchOne = async (needle: string): Promise<{ item: City; refIndex: number }> => {
-    return searchCity(cities, needle)[0];
+export const searchOne = async (
+  needle: string,
+): Promise<{ item: City; refIndex: number }> => {
+  return searchCity(cities, needle)[0];
 };
-export const search = async (needle: string): Promise<{ item: City; refIndex: number }[]> => {
-    return searchCity(cities, needle);
+export const search = async (
+  needle: string,
+): Promise<{ item: City; refIndex: number }[]> => {
+  return searchCity(cities, needle);
 };
diff --git a/src/search.ts b/src/search.ts
index 91346e8..cafd01c 100644
--- a/src/search.ts
+++ b/src/search.ts
@@ -1,9 +1,9 @@
-import Fuse from 'fuse.js';
-import { City } from './types/city';
+import Fuse from "fuse.js";
+import { City } from "./types/city";
 
 export const searchCity = (cities: City[], input: string) => {
-    const fuse = new Fuse(cities, {
-        keys: ['title'],
-    });
-    return fuse.search(input);
+  const fuse = new Fuse(cities, {
+    keys: ["title"],
+  });
+  return fuse.search(input);
 };