diff --git a/src/index.test.ts b/src/index.test.ts
index 570236b..7b7d27d 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -1275,7 +1275,9 @@ test('doesnt iterate to keys that dont exist', () => {
 test('deserialize in place', () => {
   const serialized = SuperJSON.serialize({ a: new Date() });
   const deserializedCopy = SuperJSON.deserialize(serialized);
-  const deserializedInPlace = SuperJSON.deserialize(serialized, { inPlace: true });
+  const deserializedInPlace = SuperJSON.deserialize(serialized, {
+    inPlace: true,
+  });
   expect(deserializedInPlace).toBe(serialized.json);
   expect(deserializedCopy).not.toBe(serialized.json);
   expect(deserializedCopy).toEqual(deserializedInPlace);
diff --git a/src/index.ts b/src/index.ts
index 9a11ad7..4fcd0bd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -60,10 +60,13 @@ export default class SuperJSON {
     return res;
   }
 
-  deserialize<T = unknown>(payload: SuperJSONResult, options?: { inPlace?: boolean }): T {
+  deserialize<T = unknown>(
+    payload: SuperJSONResult,
+    options?: { inPlace?: boolean }
+  ): T {
     const { json, meta } = payload;
 
-    let result: T = options?.inPlace ? json : copy(json) as any;
+    let result: T = options?.inPlace ? json : (copy(json) as any);
 
     if (meta?.values) {
       result = applyValueAnnotations(result, meta.values, meta.v ?? 0, this);
diff --git a/src/is.test.ts b/src/is.test.ts
index 5f8e5e4..8137630 100644
--- a/src/is.test.ts
+++ b/src/is.test.ts
@@ -92,3 +92,14 @@ test('Regression: null-prototype object', () => {
   expect(isPlainObject(Object.create(null))).toBe(true);
   expect(isPrimitive(Object.create(null))).toBe(false);
 });
+
+test('isURL without URL global', () => {
+  const originalURL = globalThis.URL;
+  // @ts-ignore
+  delete globalThis.URL;
+
+  expect(() => isURL('https://example.com')).not.toThrow();
+  expect(isURL('https://example.com')).toBe(false);
+
+  globalThis.URL = originalURL;
+});
diff --git a/src/is.ts b/src/is.ts
index 438ea49..8d7c5a9 100644
--- a/src/is.ts
+++ b/src/is.ts
@@ -84,4 +84,5 @@ export type TypedArray = InstanceType<TypedArrayConstructor>;
 export const isTypedArray = (payload: any): payload is TypedArray =>
   ArrayBuffer.isView(payload) && !(payload instanceof DataView);
 
-export const isURL = (payload: any): payload is URL => payload instanceof URL;
+export const isURL = (payload: any): payload is URL =>
+  typeof URL !== 'undefined' && payload instanceof URL;
diff --git a/src/pathstringifier.test.ts b/src/pathstringifier.test.ts
index b6ef6e4..e5fcd3e 100644
--- a/src/pathstringifier.test.ts
+++ b/src/pathstringifier.test.ts
@@ -22,12 +22,12 @@ describe('parsePath', () => {
     expect(parsePath(input, false)).toEqual(expectedOutput);
   });
 
-  it.each([
-    'test\\a.b',
-    'foo.bar.baz\\',
-  ])('parsePath(%p) is rejected', (input) => {
-    expect(() => parsePath(input, false)).toThrowError();
-  });
+  it.each(['test\\a.b', 'foo.bar.baz\\'])(
+    'parsePath(%p) is rejected',
+    input => {
+      expect(() => parsePath(input, false)).toThrowError();
+    }
+  );
 });
 
 describe('escapeKey', () => {