var Decompress = require('decompress');
var targz = require('decompress-targz');

var decompress = new Decompress()
	.src('foo.tar.gz')
	.dest('dest')
	.use(targz({strip: 1}));

decompress.run(function (err, files) {
	if (err) {
		throw err;
	}

	console.log('Files extracted successfully!'); 
});

var gulp = require('gulp');
var targz = require('decompress-targz');
var vinylAssign = require('vinyl-assign');

gulp.task('default', function () {
	return gulp.src('foo.tar.gz')
		.pipe(vinylAssign({extract: true}))
		.pipe(targz({strip: 1}))
		.pipe(gulp.dest('dest'));
});