Migrate linter configuration

eslint.config.mjs

@@ -0,0 +1,43 @@
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import tsParser from "@typescript-eslint/parser";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [
+    ...compat.extends("eslint:recommended", "plugin:@typescript-eslint/recommended"),
+    {
+        plugins: {
+            "@typescript-eslint": typescriptEslint,
+        },
+
+        languageOptions: {
+            parser: tsParser,
+            ecmaVersion: 5,
+            sourceType: "script",
+
+            parserOptions: {
+                project: ["./tsconfig.json"],
+            },
+        },
+
+        rules: {
+            "@typescript-eslint/no-explicit-any": 0,
+            "@typescript-eslint/no-use-before-define": "warn",
+            "@typescript-eslint/no-unused-vars": "warn",
+
+            "@typescript-eslint/quotes": ["warn", "double", {
+                allowTemplateLiterals: true,
+            }],
+        },
+    },
+];