bower is the easiest to get started with

just do

sudo npm install bower -g

Now, do

bower init
//Now answer to the questions that will b asked...

to install the libraries just so

bower install angular#1.3.0 --save

Now, this angular#1.3.0 will be added in your bower.json file

Note: For node we have package.json but to get started do npm init and rest will be easy.

Gulp

Getting started with is also easy.

Step-1

npm install --save-dev gulp

touch gulpfile.js

Step-2

Create and open gulpfile.js and follow.


var gulp = require('gulp');

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

 	console.log("Hye this is task: two");
});


 gulp.task('one', function one_task (argument) {
 	console.log("This is one task");
});


 //Create `default` task that will be called when we invoke `gulp`.

 gulp.task('default',function(cb){
 	console.log('Hey this is default function');
 });

Now one, two will be called.


gulp.task('default',['one', 'two']);

Note: what comes last will over write the perv. task.

Added some real work with the gulp.. For this gulp has rich Plugin store. link

var gulp = require('gulp'),
	uglify = require('gulp-uglify');

//Note: before using please install uglify.
//using

// `npm install --save-dev gulp-uglify`
// This will install the package in project specific folder only

gulp.task('asset:uglify',function(){
	return gulp.src('js/*js')
	.pipe(uglify())
	.pipe(gulp.dest('public/'));
});

hmm… that is good. Now i can uglify my js files using gulp task. It would be nicer if gulp do it when there is change a in any file. For this we have watches to do that for us.


gulp.task('watch:asset', function(){
	gulp.watch('js/*js',['asset:uglify']);
});

Call this is in terminal and it will be watching for changes in the specified files and will be running asset:unglify for it. Yahoo! we are good but wait lets check if there is any error in the process then what we get. I have made a mistake in one my js file and gulp stops. see-image

What we do now.


gulp.task('asset:uglify',function(){
	//note don't user `return` keyword that may break this code.
	gulp.src('js/*js')
		.pipe(uglify())
		.on('error',console.log.bind(console)) //Error handling and 
		.pipe(gulp.dest('public/'));
});

Now every thing works as expected. see-this

You may get some errors. See this link.

Alternate solution will be like using plumber

Pass command line argument to the gulp task.

currently i was on project that required me to pass command line argument to the gulp task. i find gulp-util very easy to use with.

function to create dynamically folder and structure for the project.


gulp.task("local:module", function() {
    console.log(util.env); // used to get command line arguments. Other solution wil be [gulp-prompt](https://www.npmjs.com/package/gulp-prompt)
    var inputs = util.env;
    var base_path = 'app/modules/rl.reachsign/';
    var folder_to_build = ['js', 'css', 'html', 'lang'];
    if (util.env.new) {
        var module_name = util.env.new;
        //create module folder
        fs.mkdir(base_path+module_name,function(err){
         console.log(err);return;  
        });
        //create child folder for module
        folder_to_build.map(function(folder){
          fs.mkdir(base_path+module_name+"/"+folder,function(err){
            console.log(err);
          });
          //create child files
          if(folder !== 'lang'){
             fs.writeFile(base_path+module_name+"/"+folder+"/"+module_name+"."+folder, function(){}); 
          }else{
             fs.writeFile(base_path+module_name+"/"+folder+"/"+module_name+".json", function(){}); 
          }

        });
        

    } else {
       console.log('Please use --new <module-name> to create skeleton....'); 
    }

});