Updating NPM dependencies

node_modules/gensync/index.js

@@ -33,6 +33,11 @@ module.exports = Object.assign(
       async: function(args, resolve, reject) {
         const items = Array.from(args[0]);
 
+        if (items.length === 0) {
+          Promise.resolve().then(() => resolve([]));
+          return;
+        }
+
         let count = 0;
         const results = items.map(() => undefined);
         items.forEach((item, i) => {
@@ -201,7 +206,9 @@ function buildOperation({ name, arity, sync, async }) {
   return setFunctionMetadata(name, arity, function*(...args) {
     const resume = yield GENSYNC_START;
     if (!resume) {
-      return sync.call(this, args);
+      // Break the tail call to avoid a bug in V8 v6.X with --harmony enabled.
+      const res = sync.call(this, args);
+      return res;
     }
 
     let result;