Add test for compatibility with @typescript-eslint/no-unsafe-call rule

.eslintrc

@@ -1,4 +1,5 @@
 {
+	"root": true,
 	"extends": ["xo", "xo-typescript"],
 	"parserOptions": {
 		"project": "tsconfig.tsd.json"

source/test/eslint-compatibility.ts

@@ -0,0 +1,29 @@
+import * as path from 'path';
+import test from 'ava';
+import * as execa from 'execa';
+
+test('`expectType` is compatible with eslint @typescript-eslint/no-unsafe-call rule', t => {
+	try {
+		execa.sync(
+			'node_modules/.bin/eslint',
+			['source/test/fixtures/eslint-compatibility', '--no-ignore'],
+			{
+				cwd: path.join(__dirname, '../../')
+			}
+		);
+
+		t.fail('eslint should have found an error!');
+	} catch (e: unknown) {
+		if (!e) {
+			t.fail('Thrown error is falsy!');
+		}
+
+		const error = e as execa.ExecaError;
+
+		const outLines = error.stdout.trim().split('\n');
+
+		t.regex(outLines[0], /fixtures[/\\]eslint-compatibility[/\\]index.test-d.ts$/, 'Lint error found in unexpected file');
+		t.is(outLines[1], '  9:1  error  Unsafe call of an `any` typed value  @typescript-eslint/no-unsafe-call');
+		t.is(outLines[3], '✖ 1 problem (1 error, 0 warnings)');
+	}
+});

source/test/fixtures/eslint-compatibility/.eslintrc

@@ -0,0 +1,9 @@
+{
+	"root": false,
+	"parserOptions": {
+		"project": "source/test/fixtures/eslint-compatibility/tsconfig.json"
+	},
+	"rules": {
+		"@typescript-eslint/no-unsafe-call": "error"
+	}
+}

source/test/fixtures/eslint-compatibility/index.d.ts

@@ -0,0 +1,6 @@
+declare const one: {
+	(foo: string, bar: string): string;
+	(foo: number, bar: number): number;
+};
+
+export default one;

source/test/fixtures/eslint-compatibility/index.js

@@ -0,0 +1,4 @@
+module.exports.default = (foo, bar) => {
+	// eslint-disable-next-line @typescript-eslint/no-unsafe-return,@typescript-eslint/restrict-plus-operands
+	return foo + bar;
+};

source/test/fixtures/eslint-compatibility/index.test-d.ts

@@ -0,0 +1,9 @@
+import {expectType} from '../../..';
+import one from '.';
+
+expectType<string>(one('foo', 'bar'));
+expectType<number>(one(1, 2));
+
+declare const anyVar: any;
+
+anyVar();

source/test/fixtures/eslint-compatibility/package.json

@@ -0,0 +1,3 @@
+{
+	"name": "foo"
+}

source/test/fixtures/eslint-compatibility/tsconfig.json

@@ -0,0 +1 @@
+{}