returnPromise

simple to the callbackify functions to promisify:

Install

``
$ npm install --save return-promise
`

Usage

`js
fs = require('fs')
fs.readFile('/etc/hosts', 'utf8', function (err,data) {
if (err) {
return console.log(err);
}
console.log(data);
});
`

=>

`js
require('return-promise');

fs = require('fs');
fs.readFile
.returnPromise('/etc/hosts', 'utf8')
.then(data => console.log(data))
.catch(err => console.log(err));
`

$3

`

const user = {
name: 'zs',
sayHi: function (something, cb) {
cb(null, Hi, ${something}, i'm ${this.name},);
}
};

user.sayHi('world', console.log.bind(console));

it('should can transport this', function () {
user.sayHi.bind(user) // bind to this
.returnPromise('world')
.then(console.log.bind(console))
.catch(console.error.bind(console));
});


``