Error require --harmony in command

[nguyenchilong]

throw new Error ('AppJS requires Node is run with the --harmony command line flag'); ^
Error: AppJS requires Node is run with the --harmony command line flag
at Object. (/var/www/tutorial/app/node_modules/appjs/lib/index.js:2:9)
at Module._compile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Module.require (module.js:366:17)
at require (module.js:385:17)
at Object. (/var/www/tutorial/app/app.js:3:11)
at Module._compile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)

Please help me fix it, so I just start with node js and AppJS for new project alternative for java.

[bnoordhuis]

Have you tried node --harmony app/app.js?

[Trott]

Ref: nodejs/node#4070

[nguyenchilong]

bnoordhuis: "Have you tried node --harmony app/app.js?"
I tried with it but the same error.
and I use node v4.2.2

[Trott]

You might have better luck with --harmony-proxies in addition to --harmony.

That said, instead of AppJS, you might want to look at a more current project that does the same thing like Electron.

As noted by @ChALkeR in nodejs/node#4070 (comment):

---

...AppJS itself looks deprecated and unsupported, from their GitHub page:

(Deprecated!) SDK on top of nodejs to build desktop apps using HTML5/CSS/JS http://appjs.com

And the last commit was about a year ago with a typo fix in the Readme, the previous to that commit was more than two years ago.

---

In short, AppJS doesn't look like a good choice for a new project and should be expected to have all sorts of problems. Even appjs.com says it's a work in progress and has a 2012 copyright.

[ChALkeR]

Copy-pasting my answer here from nodejs/node#4070 (comment):

AppJS checks for Proxy and WeakMap. WeakMap is present without --harmony, Proxy requires --harmony-proxies and is not enabled by just --harmony.
Ref: https://github.com/appjs/appjs/blob/master/lib/index.js#L1.
Also check https://nodejs.org/en/docs/es6/.

Note this part about «in progress» features (as --harmony-proxies) :

this is highly discouraged unless for testing purposes.

Also note that AppJS itself looks deprecated and unsupported, from their GitHub page:

(Deprecated!) SDK on top of nodejs to build desktop apps using HTML5/CSS/JS http://appjs.com

And the last commit was about a year ago with a typo fix in the Readme, the previous to that commit was more than two years ago.