Add ESLint

web-app/eslint.config.js

@@ -0,0 +1,36 @@
+import js from "@eslint/js";
+import ts from "typescript-eslint";
+import svelte from "eslint-plugin-svelte";
+import prettier from "eslint-config-prettier";
+import globals from "globals";
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  js.configs.recommended,
+  ...ts.configs.recommended,
+  ...svelte.configs["flat/recommended"],
+  prettier,
+  ...svelte.configs["flat/prettier"],
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.node
+      }
+    }
+  },
+  {
+    files: ["**/*.svelte"],
+    languageOptions: {
+      parserOptions: {
+        parser: ts.parser
+      }
+    },
+    rules: {
+      "svelte/no-at-html-tags": "off"
+    }
+  },
+  {
+    ignores: ["build/", ".svelte-kit/", "dist/"]
+  }
+];