diff --git a/src/guards.ts b/src/guards.ts
index fb4a6c5a..a70621af 100644
--- a/src/guards.ts
+++ b/src/guards.ts
@@ -18,9 +18,8 @@ export type TypeGuard<T> = PartialTypeGuard<unknown, T>;
  *
  * @public
  */
-export type GuardedType<T extends PartialTypeGuard<any, unknown>> = T extends PartialTypeGuard<any, infer U>
-	? U
-	: never;
+export type GuardedType<T extends PartialTypeGuard<any, unknown>> =
+	T extends PartialTypeGuard<any, infer U> ? U : never;
 
 /**
  * An object of type guards based on the input type.
diff --git a/src/utils.spec.ts b/src/utils.spec.ts
index 525cadd4..29556919 100644
--- a/src/utils.spec.ts
+++ b/src/utils.spec.ts
@@ -2,7 +2,7 @@ import { assert, AssertionError, combine } from './utils';
 import { isNumber, isObject } from './primitives';
 import { expect } from 'chai';
 import { hasProperties } from './objects';
-import td from 'testdouble';
+import { reset } from 'testdouble';
 
 /* eslint-disable @typescript-eslint/no-magic-numbers */
 
@@ -13,7 +13,7 @@ describe('utils', function (this: Mocha.Suite): void {
 	this.slow(5).timeout(300);
 
 	afterEach(() => {
-		td.reset();
+		reset();
 	});
 
 	describe('AssertionError', () => {