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q-jscex

v0.0.2

Published

Async/Await syntax support for Q promises

Downloads

4

Readme

q-jscex

Synopsis

// 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
fetch('http://.../').done(...).fail(...).fin(...);

Description

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

  • Jscex: http://jscex.info/
  • Q: https://github.com/kriskowal/q
  • LiveScript: https://gkz.github.com/LiveScript

CC0 1.0 Universal

To the extent possible under law, 唐鳳 has waived all copyright and related or neighboring rights to q-jscex.

This work is published from Taiwan.

http://creativecommons.org/publicdomain/zero/1.0