build: compile as esm (#888)

eslint.config.js

@@ -0,0 +1,64 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-argument */
+import eslintConfigPrettier from 'eslint-config-prettier';
+import globals from 'globals';
+import js from '@eslint/js';
+import json from 'eslint-plugin-json';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  {
+    ignores: [
+      '**/.git/',
+      '**/.vscode',
+      '**/build/',
+      '**/dist/',
+      '**/coverage/',
+      '**/LICENSE.md',
+      '**/modules/',
+      '**/node_modules/',
+      '!**/.*',
+    ],
+  },
+  js.configs.recommended,
+  ...tseslint.configs.recommendedTypeChecked.map((config) => ({
+    ...config,
+    files: ['**/*.{ts,js,mjs,cjs}'],
+  })),
+  ...tseslint.configs.stylisticTypeChecked.map((config) => ({
+    ...config,
+    files: ['**/*.{ts,js,mjs,cjs}'],
+  })),
+  {
+    files: ['**/*.{ts,js,mjs,cjs}'],
+
+    linterOptions: {
+      reportUnusedDisableDirectives: true,
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+      },
+      ecmaVersion: 'latest',
+      sourceType: 'module',
+
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+
+    rules: {
+      'sort-imports': 'error',
+    },
+  },
+  json.configs.recommended,
+  {
+    files: ['**/tsconfig.json', '**/tsconfig.*.json'],
+    rules: {
+      'json/*': ['error', { allowComments: true }],
+    },
+  },
+  eslintConfigPrettier,
+);