Convert over jest setup script

Author: kddnewton

jest.setup.js

@@ -0,0 +1,17 @@
+import { RuleTester } from "eslint";
+
+interface JestRuleTester extends RuleTester {
+  describe: (text: string, callback: () => void) => void;
+  it: { title?: string } & ((text: string, callback: () => void) => void);
+}
+
+const ruleTester = RuleTester as unknown as JestRuleTester;
+
+ruleTester.describe = (text: string, callback: () => void) => {
+  ruleTester.it.title = text;
+  return callback.call(this);
+};
+
+ruleTester.it = (text: string, callback: () => void) => {
+  test(`${ruleTester.it.title}: ${text}`, callback);
+};

jest.setup.ts

@@ -69,7 +69,7 @@
   "jest": {
     "preset": "ts-jest",
     "setupFilesAfterEnv": [
-      "./jest.setup.js"
+      "./jest.setup.ts"
     ],
     "testRegex": ".test.ts$"
   },