Using promises in gulp (requires node 0.11)

gulp-promise.js

'use strict';

var gulp = require('gulp');
var fs = require('fs');

// Make readfile return a promise
function fs_readFile(file, encoding) {
    return new Promise(function(resolve, reject) {
        fs.readFile(file, encoding, function(err, data) {
            if (err) reject(err)
            else resolve(data)
        })
    })
}

gulp.task('default', function() {

    fs_readFile('./path/to/file.json')
        .then(JSON.parse)
        .then(console.log.bind(console))
        .catch(function(error) {
            console.log('failed!', error)
        })
})