chore: add 'ban-types' eslint rule

Author: SimenB

.eslintrc.js

@@ -28,6 +28,7 @@ module.exports = {
     '@typescript-eslint/array-type': ['error', 'array-simple'],
     '@typescript-eslint/no-require-imports': 'error',
     '@typescript-eslint/ban-ts-ignore': 'warn',
+    '@typescript-eslint/ban-types': 'error',
     'no-else-return': 'error',
     eqeqeq: ['error', 'smart'],
     strict: 'error',

src/rules/no-identical-title.ts

@@ -10,7 +10,7 @@ import {
 
 interface DescribeContext {
   describeTitles: string[];
-  testTitles: String[];
+  testTitles: string[];
 }
 
 const newDescribeContext = (): DescribeContext => ({