diff --git a/test/datetime/proto.test.js b/test/datetime/proto.test.js
index 71fba90f..e3c7bd03 100644
--- a/test/datetime/proto.test.js
+++ b/test/datetime/proto.test.js
@@ -4,6 +4,8 @@ import { DateTime } from "../../src/luxon";
 test("DateTime prototype properties should not throw when accessed", () => {
   const d = DateTime.now();
   expect(() =>
-    Object.getOwnPropertyNames(Object.getPrototypeOf(d)).forEach((name) => Object.getPrototypeOf(d)[name])
+    Object.getOwnPropertyNames(Object.getPrototypeOf(d)).forEach(
+      (name) => Object.getPrototypeOf(d)[name]
+    )
   ).not.toThrow();
 });
diff --git a/test/duration/proto.test.js b/test/duration/proto.test.js
index 40132ac9..2b424db0 100644
--- a/test/duration/proto.test.js
+++ b/test/duration/proto.test.js
@@ -3,6 +3,8 @@ import { Duration } from "../../src/luxon";
 test("Duration prototype properties should not throw when addressed", () => {
   const d = Duration.fromObject({ hours: 1 });
   expect(() =>
-    Object.getOwnPropertyNames(Object.getPrototypeOf(d)).forEach((name) => Object.getPrototypeOf(d)[name])
+    Object.getOwnPropertyNames(Object.getPrototypeOf(d)).forEach(
+      (name) => Object.getPrototypeOf(d)[name]
+    )
   ).not.toThrow();
 });
diff --git a/test/interval/proto.test.js b/test/interval/proto.test.js
index ddf873ac..831d86ef 100644
--- a/test/interval/proto.test.js
+++ b/test/interval/proto.test.js
@@ -4,6 +4,8 @@ import { DateTime } from "../../src/luxon";
 test("Interval prototype properties should not throw when addressed", () => {
   const i = DateTime.fromISO("2018-01-01").until(DateTime.fromISO("2018-01-02"));
   expect(() =>
-    Object.getOwnPropertyNames(Object.getPrototypeOf(i)).forEach((name) => Object.getPrototypeOf(i)[name])
+    Object.getOwnPropertyNames(Object.getPrototypeOf(i)).forEach(
+      (name) => Object.getPrototypeOf(i)[name]
+    )
   ).not.toThrow();
 });