feat: env config

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+[*]
+charset = utf-8
+insert_final_newline = true
+end_of_line = lf
+indent_style = space
+indent_size = 2
+max_line_length = 150

eslint.config.js

@@ -0,0 +1,52 @@
+import comments from "@eslint-community/eslint-plugin-eslint-comments/configs";
+import js from "@eslint/js";
+import prettier from "eslint-config-prettier/flat";
+import { defineConfig, globalIgnores } from "eslint/config";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+export default defineConfig([
+  {
+    files: ["**/*.{js,mjs,cjs,ts,mts,cts}"],
+    plugins: { js },
+    extends: ["js/recommended"],
+    languageOptions: { globals: globals.browser },
+  },
+  prettier,
+  comments.recommended,
+  globalIgnores(["coverage/"]),
+
+  tseslint.configs.recommendedTypeChecked.map((config) => ({ ...config, files: config.files ?? ["**/*.{ts,tsx}"] })),
+  {
+    files: ["**/*.{ts,tsx}"],
+    languageOptions: { parserOptions: { projectService: true } },
+  },
+  {
+    files: ["**/*.{ts,tsx}"],
+    rules: {
+      "@typescript-eslint/no-unused-vars": [
+        "error",
+        {
+          args: "after-used",
+          argsIgnorePattern: "^_",
+          caughtErrors: "all",
+          caughtErrorsIgnorePattern: "^_",
+          destructuredArrayIgnorePattern: "^_",
+          varsIgnorePattern: "^_",
+          ignoreRestSiblings: true,
+        },
+      ],
+      "@typescript-eslint/unbound-method": "off",
+      "@typescript-eslint/no-unsafe-declaration-merging": "off",
+      "@typescript-eslint/no-empty-object-type": ["error", { allowInterfaces: "with-single-extends" }],
+      "@typescript-eslint/consistent-type-imports": ["warn"],
+      "@typescript-eslint/only-throw-error": "off",
+    },
+  },
+  {
+    files: ["**/*.{test,spec}-d.{ts,tsx}"],
+    rules: {
+      "@typescript-eslint/no-unused-vars": "off",
+    },
+  },
+]);

package.json

@@ -9,7 +9,15 @@
     "preview": "vite preview"
   },
   "devDependencies": {
+    "@eslint-community/eslint-plugin-eslint-comments": "^4.5.0",
+    "@eslint/js": "^9.39.1",
+    "eslint": "^9.39.1",
+    "eslint-config-prettier": "^10.1.8",
+    "globals": "^16.5.0",
+    "jiti": "^2.6.1",
+    "prettier": "^3.7.4",
     "typescript": "~5.9.3",
+    "typescript-eslint": "^8.48.1",
     "vite": "npm:rolldown-vite@7.2.5"
   },
   "overrides": {