fix: Resolve TypeScript errors

Signed-off-by: Hermes Agent <hermes@nosuchhost>

client/node_modules/eslint/conf/ecma-version.js

@@ -0,0 +1,16 @@
+/**
+ * @fileoverview Configuration related to ECMAScript versions
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+/**
+ * The latest ECMAScript version supported by ESLint.
+ * @type {number} year-based ECMAScript version
+ */
+const LATEST_ECMA_VERSION = 2026;
+
+module.exports = {
+	LATEST_ECMA_VERSION,
+};