diff --git a/test/test.ts b/test/test.ts
index 37b321b..f9334ee 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -340,7 +340,7 @@ const types = new Map<string, Test>([
 		is: is.weakRef,
 		assert: assert.weakRef,
 		fixtures: window.WeakRef ? [new window.WeakRef({})] : [],
-		typename: 'WeakRef'
+		typename: 'WeakRef',
 	}],
 	['weakMap', {
 		is: is.weakMap,
diff --git a/tsconfig.json b/tsconfig.json
index 8dcddfa..e1c05ee 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,8 +1,7 @@
 {
 	"extends": "@sindresorhus/tsconfig",
 	"compilerOptions": {
-		"outDir": "dist",
-	    "lib": ["ESNext"]
+		"outDir": "dist"
 	},
 	"include": [
 		"source"