diff --git a/package.json b/package.json
index 99e5e248..c72e6724 100644
--- a/package.json
+++ b/package.json
@@ -32,12 +32,7 @@
 		"json"
 	],
 	"devDependencies": {
-		"@sindresorhus/tsconfig": "^0.7.0",
-		"@typescript-eslint/eslint-plugin": "^2.22.0",
-		"@typescript-eslint/parser": "^2.22.0",
-		"eslint-config-xo-typescript": "^0.26.0",
 		"tsd": "^0.7.3",
-		"typescript": "^3.8.3",
 		"xo": "^0.27.2"
 	},
 	"types": "index.d.ts",
diff --git a/source/basic.d.ts b/source/basic.d.ts
index 10c5a7b4..d380c8b9 100644
--- a/source/basic.d.ts
+++ b/source/basic.d.ts
@@ -17,7 +17,7 @@ export type Primitive =
 /**
 Matches a [`class` constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes).
 */
-export type Class<T = unknown, Arguments extends any[] = any[]> = new(...arguments_: Arguments) => T; // eslint-disable-line @typescript-eslint/type-annotation-spacing
+export type Class<T = unknown, Arguments extends any[] = any[]> = new(...arguments_: Arguments) => T;
 
 /**
 Matches any [typed array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray), like `Uint8Array` or `Float64Array`.
diff --git a/tsconfig.json b/tsconfig.json
deleted file mode 100644
index e4928276..00000000
--- a/tsconfig.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-	"extends": "@sindresorhus/tsconfig"
-}