update

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;

node_modules/gensync/package.json

@@ -1,36 +1,39 @@
 {
   "_args": [
     [
-      "gensync@1.0.0-beta.1",
-      "/mnt/Foxconn/Digitalent/Deverloper/liff-push_2series"
+      "gensync@1.0.0-beta.2",
+      "/home/node/nuxt"
     ]
   ],
-  "_from": "gensync@1.0.0-beta.1",
-  "_id": "gensync@1.0.0-beta.1",
+  "_from": "gensync@1.0.0-beta.2",
+  "_id": "gensync@1.0.0-beta.2",
   "_inBundle": false,
-  "_integrity": "sha512-r8EC6NO1sngH/zdD9fiRDLdcgnbayXah+mLgManTaIZJqEC1MZstmnox8KpnI2/fxQwrp5OpCOYWLp4rBl4Jcg==",
+  "_integrity": "sha512-3hN7NaskYvMDLQY55gnW3NQ+mesEAepTqlg+VEbj7zzqEMBVNhzcGYYeqFo/TlYz6eQiFcp1HcsCZO+nGgS8zg==",
   "_location": "/gensync",
   "_phantomChildren": {},
   "_requested": {
     "type": "version",
     "registry": true,
-    "raw": "gensync@1.0.0-beta.1",
+    "raw": "gensync@1.0.0-beta.2",
     "name": "gensync",
     "escapedName": "gensync",
-    "rawSpec": "1.0.0-beta.1",
+    "rawSpec": "1.0.0-beta.2",
     "saveSpec": null,
-    "fetchSpec": "1.0.0-beta.1"
+    "fetchSpec": "1.0.0-beta.2"
   },
   "_requiredBy": [
     "/@babel/core"
   ],
-  "_resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.1.tgz",
-  "_spec": "1.0.0-beta.1",
-  "_where": "/mnt/Foxconn/Digitalent/Deverloper/liff-push_2series",
+  "_resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz",
+  "_spec": "1.0.0-beta.2",
+  "_where": "/home/node/nuxt",
   "author": {
     "name": "Logan Smyth",
     "email": "loganfsmyth@gmail.com"
   },
+  "bugs": {
+    "url": "https://github.com/loganfsmyth/gensync/issues"
+  },
   "description": "Allows users to use generators in order to write common functions that can be both sync or async.",
   "devDependencies": {
     "babel-core": "^6.26.3",
@@ -46,6 +49,7 @@
   "engines": {
     "node": ">=6.9.0"
   },
+  "homepage": "https://github.com/loganfsmyth/gensync",
   "keywords": [
     "async",
     "sync",
@@ -56,8 +60,12 @@
   "license": "MIT",
   "main": "index.js",
   "name": "gensync",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/loganfsmyth/gensync.git"
+  },
   "scripts": {
     "test": "jest"
   },
-  "version": "1.0.0-beta.1"
+  "version": "1.0.0-beta.2"
 }

node_modules/gensync/test/index.test.js

@@ -181,7 +181,9 @@ describe("gensync({})", () => {
     test("default arity", () => {
       expect(
         gensync({
-          sync: function(a, b, c, d, e, f, g){ throwTestError(); },
+          sync: function(a, b, c, d, e, f, g) {
+            throwTestError();
+          },
           async: throwTestError,
         }).length
       ).toBe(7);
@@ -444,6 +446,18 @@ describe("gensync.all()", () => {
       syncErrback: false,
     });
   });
+
+  test("empty list", async () => {
+    const fn = gensync(function*() {
+      yield* gensync.all([]);
+    });
+
+    await expectResult(fn, undefined, {
+      value: undefined,
+      expectSync: true,
+      syncErrback: false,
+    });
+  });
 });
 
 describe("gensync.race()", () => {