Execon [![License][LicenseIMGURL]][LicenseURL] [![NPM version][NPMIMGURL]][NPMURL] [![Dependency Status][DependencyStatusIMGURL]][DependencyStatusURL] [![BuildStatusIMGURL]][BuildStatusURL]

Patterns of function calls.

Install

![NPM_INFO][NPM_INFO_IMG]
``
npm i execon --save

or

bower i execon --save
`

Api

`js
var exec = require('execon');
`

$3

Check is parameter is function, if it's - executes it with given parameters

Was:

`js
function(callback, p1, p2, pN) {
if (typeof callback === 'function')
callback(p1, p2, pN);
}
`

Now

`js
function(callback, p1, p2, pN) {
exec(callback, p1, p2, pN);
}
`

or just

`js
exec.ret(callback, p1, p2, pN);
`

$3

Conditional execution one of two functions

Preconditions:

`js
function one() {
console.log(1);
}

function two(callback) {
setTimeout(callback, 1000);
}
`


Before:

`js
if (2 > 3)
one();
else
two(one);

`

After:

`js
exec.if(2 > 3, one, two);
`

$3

if a you need a couple async operation do same work, and then call callback, this function for you.

Node.js example.

`js
var fs = require('fs'),
Util = require('execon');

exec.parallel([
function(callback) {
fs.readFile('file1', callback);
},
function(callback) {
fs.readFile('file2', callback);
}
], function(error, data1, data2) {
if (error)
console.log(error)
else
console.log(data1, data2);
});
`
Vanilla js example.

`js
var ONE_SECOND = 1000,
TWO_SECONDS = 2000,
func = function(time, str, callback) {
setTimeout(function() {
console.log(str);
callback(null, str);
}, time);
},

func1 = func.bind(null, TWO_SECONDS, 'first'),
func2 = func.bind(null, ONE_SECOND, 'second');

exec.parallel([func1, func2], function(error, str1, str2) {
console.log(str1, str2);
});
`

$3

executes functions one-by-one

`js
function one(callback){
setTimeout(function() {
console.log(1)
callback();
}, 1000);
}

function two(callback) {
console.log(2);
callback();
}

exec.series([one, two], function(error) {
console.log(error || 'done');
});
``

License

MIT

[NPM_INFO_IMG]: https://nodei.co/npm/execon.png?downloads=true&&stars&&downloadRank "npm install rendy"
[NPMIMGURL]: https://img.shields.io/npm/v/execon.svg?style=flat
[DependencyStatusIMGURL]: https://img.shields.io/gemnasium/coderaiser/execon.svg?style=flat
[LicenseIMGURL]: https://img.shields.io/badge/license-MIT-317BF9.svg?style=flat
[NPMURL]: https://npmjs.org/package/execon "npm"
[BuildStatusURL]: https://travis-ci.org/coderaiser/execon "Build Status"
[DependencyStatusURL]: https://gemnasium.com/coderaiser/execon "Dependency Status"
[LicenseURL]: https://tldrlegal.com/license/mit-license "MIT License"
[BuildStatusIMGURL]: https://img.shields.io/travis/coderaiser/execon/master.svg?style=flat
[BuildStatusURL]: https://travis-ci.org/coderaiser/execon "Build Status"