Update ESLint to use Flat Config (#130)

* Add eslint mjs

* Cleanup

__tests__/mocks.test.ts

@@ -1,5 +1,3 @@
-import {Project} from '../src/models/project'
-
 export const PATCH = {
   SINGLE_MODULE: {
     COVERAGE:
@@ -240,7 +238,7 @@ export const PROJECT = {
       missed: 21,
       percentage: 38.24,
     },
-  } as Project,
+  },
   MULTI_MODULE: {
     modules: [
       {
@@ -442,7 +440,7 @@ export const PROJECT = {
       missed: 38,
       percentage: 7.32,
     },
-  } as Project,
+  },
 }
 
 it('Empty test', function () {

eslint.config.mjs

@@ -0,0 +1,93 @@
+import jest from 'eslint-plugin-jest'
+import typescriptEslint from '@typescript-eslint/eslint-plugin'
+import tsParser from '@typescript-eslint/parser'
+import tseslint from 'typescript-eslint'
+
+const languageOptions = {
+  ecmaVersion: 9,
+  sourceType: 'module',
+  parser: tsParser,
+  parserOptions: {
+    project: './tsconfig.json',
+  },
+}
+
+const typescriptConfig = {
+  plugins: {jest, '@typescript-eslint': typescriptEslint},
+  languageOptions,
+  rules: {
+    'i18n-text/no-en': 'off',
+    'eslint-comments/no-use': 'off',
+    'import/no-namespace': 'off',
+    'no-unused-vars': 'off',
+    '@typescript-eslint/no-unused-vars': 'error',
+
+    '@typescript-eslint/explicit-member-accessibility': [
+      'error',
+      {
+        accessibility: 'no-public',
+      },
+    ],
+
+    '@typescript-eslint/no-require-imports': 'error',
+    '@typescript-eslint/array-type': 'error',
+    '@typescript-eslint/await-thenable': 'error',
+    '@typescript-eslint/ban-ts-comment': 'error',
+    camelcase: 'off',
+    '@typescript-eslint/consistent-type-assertions': [
+      'error',
+      {
+        assertionStyle: 'as',
+        objectLiteralTypeAssertions: 'never',
+      },
+    ],
+    '@typescript-eslint/explicit-function-return-type': [
+      'error',
+      {
+        allowExpressions: true,
+      },
+    ],
+
+    'filenames/match-regex': 'off',
+    '@typescript-eslint/no-array-constructor': 'error',
+    '@typescript-eslint/no-empty-interface': 'error',
+    '@typescript-eslint/no-explicit-any': 'error',
+    '@typescript-eslint/no-extraneous-class': 'error',
+    '@typescript-eslint/no-for-in-array': 'error',
+    '@typescript-eslint/no-inferrable-types': 'error',
+    '@typescript-eslint/no-misused-new': 'error',
+    '@typescript-eslint/no-namespace': 'error',
+    '@typescript-eslint/no-non-null-assertion': 'error',
+    '@typescript-eslint/no-unnecessary-qualifier': 'error',
+    '@typescript-eslint/no-unnecessary-type-assertion': 'error',
+    '@typescript-eslint/no-useless-constructor': 'error',
+    '@typescript-eslint/no-var-requires': 'error',
+    '@typescript-eslint/prefer-for-of': 'error',
+    '@typescript-eslint/prefer-function-type': 'error',
+    '@typescript-eslint/prefer-includes': 'error',
+    '@typescript-eslint/prefer-string-starts-ends-with': 'error',
+    '@typescript-eslint/promise-function-async': 'error',
+    '@typescript-eslint/require-array-sort-compare': 'error',
+    '@typescript-eslint/restrict-plus-operands': 'error',
+    '@typescript-eslint/unbound-method': 'error',
+    '@typescript-eslint/prefer-nullish-coalescing': 'error',
+    '@typescript-eslint/prefer-ts-expect-error': 'off',
+  },
+}
+
+// noinspection JSUnusedGlobalSymbols
+export default [
+  {
+    ignores: [
+      '**/dist/',
+      '**/node_modules/',
+      '**/jest.config.js',
+      '**/lib/',
+      '**/coverage/',
+    ],
+  },
+  ...tseslint.configs.recommended,
+  ...tseslint.configs.strict,
+  ...tseslint.configs.stylistic,
+  typescriptConfig,
+]