test: remove @ts-ignore and add TypeScript declaration files

Author: remarkablemark

test/cases/index.d.ts

@@ -0,0 +1,11 @@
+export interface TestCase {
+  name: string;
+  data: string;
+}
+
+declare const TestCases: {
+  html: TestCase[];
+  svg: TestCase[];
+};
+
+export default TestCases;

test/helpers/index.d.ts

@@ -0,0 +1,21 @@
+import type { TestCase } from '../cases';
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type Parser = any;
+
+export function runTests(
+  assert: Chai.AssertStatic,
+  actualParser: Parser,
+  expectedParser: Parser,
+  testCases: TestCase[],
+): void;
+
+export function testCaseSensitiveTags(
+  assert: Chai.AssertStatic,
+  parser: Parser,
+): void;
+
+export function throwErrors(
+  assert: Chai.AssertStatic,
+  expectedParser: Parser,
+): void;

test/server/server.test.ts

@@ -4,9 +4,7 @@ import * as htmlparser from 'htmlparser2';
 import jsdomify from 'jsdomify';
 
 import serverParser from '../../src';
-// @ts-ignore
 import cases from '../cases';
-// @ts-ignore
 import { runTests, testCaseSensitiveTags, throwErrors } from '../helpers';
 
 describe('server parser', () => {