Set up eslint

gdn-app/eslint.config.js

@@ -0,0 +1,21 @@
+// https://eslint.org/docs/latest/use/configure/
+// https://eslint.vuejs.org/user-guide/
+
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+import pluginVue from "eslint-plugin-vue";
+import configPrettier from "eslint-config-prettier";
+
+export default tseslint.config(
+  { ignores: ["dist/", "src/vite-env.d.ts"] },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  ...tseslint.configs.stylistic,
+  ...pluginVue.configs["flat/recommended"],
+
+  // We don't want prettier's formatting decisions being second-guessed by eslint.
+  configPrettier,
+
+  // We need to tell the vue parser that it should use the ts parser instead of the js parser.
+  { files: ["**/*.vue"], languageOptions: { parserOptions: { parser: tseslint.parser } } },
+);