fix: Resolve TypeScript errors

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

client/node_modules/levelup/lib/common.js

@@ -0,0 +1,7 @@
+exports.getCallback = function (options, callback) {
+  return typeof options === 'function' ? options : callback
+}
+
+exports.getOptions = function (options) {
+  return typeof options === 'object' && options !== null ? options : {}
+}