var fs = require('fs')
var request = require('request')
var lightco = require('lightco')

lightco.run(function* ($) {
    var [error, data] = yield fs.readFile('index.js', 'utf8', $)
    if (error)
        throw error
    console.log(data)

    var [error, response, body] = yield request('http://www.baidu.com', $)
    if (error)
        throw error
    console.log(response.statusCode)

    var [error, data] = yield query(true)
    if (error)
        throw error
    console.log(data)
})

var immediatelyInvoke = function(cb) {
	cb('hi!')
}
// this will be generate a error (Generator is already running)