Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/@babel/runtime/helpers/defineProperty.js

@@ -1,16 +0,0 @@
-function _defineProperty(obj, key, value) {
-  if (key in obj) {
-    Object.defineProperty(obj, key, {
-      value: value,
-      enumerable: true,
-      configurable: true,
-      writable: true
-    });
-  } else {
-    obj[key] = value;
-  }
-
-  return obj;
-}
-
-module.exports = _defineProperty;