Async/Await syntax support for Q promises



// Drop-in replacement to require('q') 
var Q = require('q-jscex');
var HTTP = require('q-http');
// Define an Async function with a special $await keyword in it 
var fetch = eval(Q.async.$(function(url) {
    // $await takes anything that returns a Q Promise 
    var buf = $await( HTTP.read(url) );
    // ...pauses one second... 
    $await( Q.delay(1000) );
    // ...do something with the returned buffer... 
    return buf;
// Return value of Async functions is always a Q Promise 


This module exports a Q root object (Q) containing an Q.async.$ helper; it compiles a regular function into one that returns a Q Promise object.

Functions defined with Q.async.$ has access to an extra $await keyword, which implicitly waits for other Q Promise objects.

Please see example.js for a sample usage, and type make demo to see it in action.

The source code is in src directory and written in LiveScript. Note that LiveScript is not a runtime dependency of this module; it's only used for development.

The underlying JIT compiler is available as the Q.async.$.Jscex object.

See Also

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This work is published from Taiwan.