Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/@babel/runtime/helpers/esm/classPrivateMethodGet.js

@@ -1,7 +0,0 @@
-export default function _classPrivateMethodGet(receiver, privateSet, fn) {
-  if (!privateSet.has(receiver)) {
-    throw new TypeError("attempted to get private field on non-instance");
-  }
-
-  return fn;
-}