diff --git a/package.json b/package.json
index 7abc7ab..7a22231 100644
--- a/package.json
+++ b/package.json
@@ -36,8 +36,8 @@
 	"main": "dist/index.js",
 	"scripts": {
 		"clean": "rm -rf dist coverage",
-		"format": "prettier --write './**/*.{js,json,yml,md}'",
-		"format:check": "prettier --check './**/*.{js,json,yml,md}'",
+		"format": "prettier --write './**/*.{ts,json,yml,md}'",
+		"format:check": "prettier --check './**/*.{ts,json,yml,md}'",
 		"test": "npm run format:check && jest --coverage",
 		"coveralls": "cat coverage/lcov.info | coveralls",
 		"prebuild": "npm run clean",
diff --git a/src/hash.spec.ts b/src/hash.spec.ts
index 3d540cc..c561694 100644
--- a/src/hash.spec.ts
+++ b/src/hash.spec.ts
@@ -1,9 +1,17 @@
 import * as hash from "./hash"
 
 test("hash()", async () => {
-	expect(hash.hash("testing")).toBe("cf80cd8aed482d5d1527d7dc72fceff84e6326592848447d2dc0b0e87dfc9a90")
+	expect(hash.hash("testing")).toBe(
+		"cf80cd8aed482d5d1527d7dc72fceff84e6326592848447d2dc0b0e87dfc9a90",
+	)
 	expect(hash.hash("testing", { algorithm: "md5" })).toBe("ae2b1fca515949e5d54fb22b8ed95575")
-	expect(hash.hash("testing", { salt: "yo-this-is-a-salt" })).toBe("bd3df90288d99583d1c93f00ec00d92c97c3aff241b1beffb819dbd15f68d9f6")
-	expect(hash.hash({ test: "hi" })).toBe("aa6d68a0aab2f834d2bc353d734907e0e0d562e1beaf99432bd665c96f5b4d7b")
-	expect(hash.hash("testing", { rounds: 100 })).toBe("2c66de00e03581e03866d7b62a31a7d5776419f498f479a877270294c2600321")
+	expect(hash.hash("testing", { salt: "yo-this-is-a-salt" })).toBe(
+		"bd3df90288d99583d1c93f00ec00d92c97c3aff241b1beffb819dbd15f68d9f6",
+	)
+	expect(hash.hash({ test: "hi" })).toBe(
+		"aa6d68a0aab2f834d2bc353d734907e0e0d562e1beaf99432bd665c96f5b4d7b",
+	)
+	expect(hash.hash("testing", { rounds: 100 })).toBe(
+		"2c66de00e03581e03866d7b62a31a7d5776419f498f479a877270294c2600321",
+	)
 })
diff --git a/src/utils.spec.ts b/src/utils.spec.ts
index 479f521..e99a601 100644
--- a/src/utils.spec.ts
+++ b/src/utils.spec.ts
@@ -2,5 +2,5 @@ import * as utils from "./utils"
 
 test("stringify()", async () => {
 	expect(utils.stringify(1)).toBe("1")
-	expect(utils.stringify({ hey: "hi" })).toBe("{\"hey\":\"hi\"}")
+	expect(utils.stringify({ hey: "hi" })).toBe('{"hey":"hi"}')
 })
diff --git a/src/utils.ts b/src/utils.ts
index e4ce752..f97123d 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -3,5 +3,5 @@
  * if the value is an object.
  */
 export function stringify(value: any): string {
-	return typeof value === 'object' ? JSON.stringify(value) : String(value)
+	return typeof value === "object" ? JSON.stringify(value) : String(value)
 }