feat: add shared ESLint config package (@repo/eslint-config)

packages/eslint-config/base.js

@@ -0,0 +1,17 @@
+import js from "@eslint/js";
+import eslintConfigPrettier from "eslint-config-prettier";
+import tseslint from "typescript-eslint";
+import turboPlugin from "eslint-plugin-turbo";
+
+export default [
+  { ignores: ["dist/**", "node_modules/**"] },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  eslintConfigPrettier,
+  {
+    plugins: { turbo: turboPlugin },
+    rules: {
+      "turbo/no-undeclared-env-vars": "warn",
+    },
+  },
+];