chore: Configureer linter (ESLint)

eslint.config.ts

@@ -0,0 +1,82 @@
+import pluginJs from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import prettierConfig from 'eslint-config-prettier';
+
+import { includeIgnoreFile } from '@eslint/compat';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const gitignorePath = path.resolve(__dirname, '.gitignore');
+
+export default [
+    pluginJs.configs.recommended,
+    ...tseslint.configs.recommended,
+    prettierConfig,
+    includeIgnoreFile(gitignorePath),
+    {
+        ignores: ['**/dist/**', '**/.node_modules/**', '**/coverage/**'],
+    },
+    {
+        languageOptions: {
+            ecmaVersion: 'latest',
+            sourceType: 'module',
+        },
+        linterOptions: {
+            reportUnusedInlineConfigs: 'error',
+        },
+        rules: {
+            'no-await-in-loop': 'warn',
+            'no-constructor-return': 'error',
+            'no-duplicate-imports': 'error',
+            'no-inner-declarations': 'error',
+            'no-self-compare': 'error',
+            'no-template-curly-in-string': 'error',
+            'no-unmodified-loop-condition': 'warn',
+            'no-unreachable-loop': 'warn',
+            'no-use-before-define': 'error',
+            'no-useless-assignment': 'error',
+
+            'arrow-body-style': ['warn', 'always'],
+            'block-scoped-var': 'warn',
+            camelcase: 'warn',
+            'capitalized-comments': 'warn',
+            'consistent-return': 'warn',
+            'consistent-this': 'error',
+            curly: 'error',
+            'default-case': 'error',
+            'default-case-last': 'error',
+            'default-param-last': 'error',
+            'dot-notation': 'warn',
+            eqeqeq: 'error',
+            'func-names': 'warn',
+            'func-style': ['warn', 'declaration'],
+            'grouped-accessor-pairs': ['warn', 'getBeforeSet'],
+            'guard-for-in': 'warn',
+            'logical-assignment-operators': 'warn',
+            'max-classes-per-file': 'warn',
+            'no-alert': 'error',
+            'no-array-constructor': 'warn',
+            'no-bitwise': 'warn',
+            'no-console': 'warn',
+            'no-continue': 'warn',
+            'no-else-return': 'warn',
+            'no-empty-function': 'warn',
+            'no-eq-null': 'error',
+            'no-eval': 'error',
+            'no-extend-native': 'error',
+            'no-extra-label': 'error',
+            'no-implicit-coercion': 'warn',
+            'no-implied-eval': 'error',
+            'no-invalid-this': 'error',
+            'no-iterator': 'error',
+            'no-label-var': 'warn',
+            'no-labels': 'warn',
+            'no-loop-func': 'error',
+            'no-multi-assign': 'error',
+            'no-nested-ternary': 'error',
+            'no-object-constructor': 'error',
+        },
+    },
+];