Node: "for await" loop throws ​​SyntaxError: Unexpected reserved word

[microsmsm]

• Version: v9.2.0
• Platform: Darwin Osamas-MacBook-Pro.local 17.2.0 Darwin Kernel Version 17.2.0: Fri Sep 29 18:27:05 PDT 2017; root:xnu-4570.20.62~3/RELEASE_X86_64 x86_64

This code does not recognize "await" with Async iterator and throws:

SyntaxError: Unexpected reserved word

async function foo (){
    const promises = [
        fetch(`${API_URL}/api/users/1`),
        fetch(`${API_URL}/api/users/2`),
        fetch(`${API_URL}/api/users/3`),
    ]

    for await (let item of promises){
        console.log(item)
    }
}

While it's working normally with chrome V8 engine

Any ideas why it is not yet supported?

[vsemozhetbyt]

Async iterators are shipped in V8 6.3
To use them you need the last Node.js nightly (has V8 6.3 as of 2017.12.06).
Or you can add --harmony_async_iteration flag with the Node.js 9 (still has V8 6.2 for now).

[evanlucas]

Closing as @vsemozhetbyt has answered the question. Thanks!