First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/chevrotain/src/lang/lang_extensions.ts

@@ -0,0 +1,10 @@
+const NAME = "name";
+
+export function defineNameProp(obj: {}, nameValue: string): void {
+  Object.defineProperty(obj, NAME, {
+    enumerable: false,
+    configurable: true,
+    writable: false,
+    value: nameValue,
+  });
+}