Add dom lib by default

source/lib/config.ts

@@ -34,7 +34,7 @@ export default (pkg: {tsd?: RawConfig}, cwd: string): Config => {
 		compilerOptions: {
 			strict: true,
 			jsx: JsxEmit.React,
-			lib: ['lib.es2017.d.ts'],
+			lib: ['es2017', 'dom'],
 			module: ModuleKind.CommonJS,
 			target: ScriptTarget.ES2017,
 			esModuleInterop: true,

source/test/fixtures/dom/index.d.ts

@@ -0,0 +1 @@
+export default function(parent: HTMLElement, child: HTMLElement): void;

source/test/fixtures/dom/index.js

@@ -0,0 +1,3 @@
+exports.default = (parent, child) => {
+	parent.appendChild(child);
+};

source/test/fixtures/dom/index.test-d.ts

@@ -0,0 +1,7 @@
+import {expectType} from '../../../..';
+import append from '.';
+
+const parent = document.createElement('div');
+const child = document.createElement('p');
+
+expectType<void>(append(parent, child));

source/test/fixtures/dom/package.json

@@ -0,0 +1,8 @@
+{
+	"name": "foo",
+	"tsd": {
+		"compilerOptions": {
+			"lib": ["dom"]
+		}
+	}
+}

source/test/test.ts

@@ -111,6 +111,14 @@ test('add support for esm with esModuleInterop', async t => {
 	verify(t, diagnostics, []);
 });
 
+test('add DOM support by default', async t => {
+	const diagnostics = await tsd({
+		cwd: path.join(__dirname, 'fixtures/dom')
+	});
+
+	verify(t, diagnostics, []);
+});
+
 test('a lib option in package.json overrdides a lib option in tsconfig.json', async t => {
 	const diagnostics = await tsd({cwd: path.join(__dirname, 'fixtures/lib-config/lib-from-package-json-overrides-tsconfig-json')});