fix(sdk): Updates to eslint, and fixes from that

- Use latest eslint and typescript
- Uncovered an error in a unit test for configurations, which should now be more strict
- TS 5.2+ requires 'node' style modules to load node_modules packages

cli/eslint.config.mjs

@@ -0,0 +1,41 @@
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+import pluginChaiFriendly from "eslint-plugin-chai-friendly";
+
+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("plugin:@typescript-eslint/recommended", "plugin:prettier/recommended"), {
+    plugins: {
+        "chai-friendly": pluginChaiFriendly,
+        "@typescript-eslint": typescriptEslint,
+    },
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+            ...globals.node,
+        },
+
+        ecmaVersion: 5,
+        sourceType: "commonjs",
+
+        parserOptions: {
+            project: ["**/tsconfig.json"],
+        },
+
+    },
+    rules: {
+        // See https://www.npmjs.com/package/eslint-plugin-chai-friendly
+        "@typescript-eslint/no-unused-expressions": "off", // disable original rule
+        "chai-friendly/no-unused-expressions": "error"
+    },
+}];