Update tooling versions

Author: natefaubion

.eslintrc.json

@@ -0,0 +1,53 @@
+import globals from "globals";
+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"), {
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+        },
+
+        ecmaVersion: 6,
+        sourceType: "module",
+    },
+
+    rules: {
+        "block-scoped-var": "error",
+        "consistent-return": "error",
+        eqeqeq: "error",
+        "guard-for-in": "error",
+        "no-bitwise": "error",
+        "no-caller": "error",
+        "no-extra-parens": "off",
+        "no-extend-native": "error",
+        "no-loop-func": "error",
+        "no-new": "error",
+        "no-param-reassign": "error",
+        "no-return-assign": "error",
+        "no-sequences": "error",
+        "no-unused-expressions": "error",
+        "no-use-before-define": "error",
+        "no-undef": "error",
+        "no-eq-null": "error",
+        radix: ["error", "always"],
+
+        indent: ["error", 2, {
+            SwitchCase: 1,
+        }],
+
+        quotes: ["error", "double"],
+        semi: ["error", "always"],
+        strict: ["error", "global"],
+    },
+}];

eslint.config.mjs

@@ -1,4 +1,5 @@
 let upstream =
-      https://raw.githubusercontent.com/purescript/package-sets/prepare-0.15/src/packages.dhall
+      https://github.com/purescript/package-sets/releases/download/psc-0.15.15-20250205/packages.dhall
+        sha256:442220ce62d4f9a353819b28db9a7295cca7acaae7d2fbe814e52c1b25a7a296
 
 in  upstream