gulpfile.js

var gulp = require('gulp');
var path = require('path');
var zip = require('gulp-zip');
var minimist = require('minimist');
var fs = require('fs');

var knownOptions = {
	string: 'packageName',
	string: 'packagePath',
	default: {packageName: "Package.zip", packagePath: path.join(__dirname, '_package')}
}

var options = minimist(process.argv.slice(2), knownOptions);

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

	var packagePaths = ['**', 
					'!**/_package/**', 
					'!**/typings/**',
					'!typings', 
					'!_package', 
					'!gulpfile.js']
	
	//add exclusion patterns for all dev dependencies
	var packageJSON = JSON.parse(fs.readFileSync(path.join(__dirname, 'package.json'), 'utf8'));
	var devDeps = packageJSON.devDependencies;

	for(var propName in devDeps)
	{
		var excludePattern1 = "!**/node_modules/" + propName + "/**";
		var excludePattern2 = "!**/node_modules/" + propName;
		packagePaths.push(excludePattern1);
		packagePaths.push(excludePattern2);
	}
	
    return gulp.src(packagePaths)
        .pipe(zip(options.packageName))
        .pipe(gulp.dest(options.packagePath));
});