Add client shard eval/client property fetching, and improve existing shard stuff

src/util/MakeError.js

@@ -0,0 +1,7 @@
+module.exports = function makeError(obj) {
+  const err = new Error(obj.message, obj.fileName, obj.lineNumber);
+  err.name = obj.name;
+  err.columnNumber = obj.columnNumber;
+  err.stack = obj.stack;
+  return err;
+};