How to write a gulp plugin that uses other gulp plugins?

Question

I have a gulp task to precompile descriptor templates, consisting of the following:

gulp.src(['templates/*.hbs'])
    .pipe(handlebars())
    .pipe(declare({
      namespace: 'Template.templates',
      noRedeclare: true
    }))
    .pipe(concat('compiled.js'))
    .pipe(header('Template = {};\nTemplate.render = function(templateName, context) { return Handlebars.template(Template.templates[templateName])(context) };\n'))
    .pipe(gulp.dest('templates'));

I want to create a gulp plugin that wraps this functionality to make it easier to use, for example:

gulp.src(['templates/*.hbs'])
  .pipe(handlebars2())
  .dest('templates')

Or with options:

gulp.src(['templates/*.hbs'])
  .pipe(handlebars2({
    filename: 'compiled.js',
    namespace: 'Template'
  }))
  .dest('templates')

The documentation for writing gulp plugins and the source code of the examples I looked at show only the use of threads, and I'm not sure how to apply this to using other gulp plugins inside my own.

How to write a gulp plugin to execute the functions handlebars2above?

Even if someone just points me in the right direction, I can solve it and post the solution as an answer to others. Thank!

Answer 1

gulp , stream-combiner:

var combine = require('stream-combiner');

function coffeePipe() {
    return combine(
        coffeescript(),
        coffeelint.reporter('fail').on('error', function(){
            gutil.beep();
            gulp.run('lint');
        });
};

//usage:
gulp.src().pipe(coffeePipe());

https://github.com/OverZealous/lazypipe/issues/4#issuecomment-36785601

lazypipe:

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Answer 2

gulp, , :

readable.pipe(writable);

gulp, , . (, ).

, . , , .

, lazypipe:

var lazypipe = require('');

var handlebars2 = lazypipe()  
    .pipe(handlebars)
    .pipe(declare,{
      namespace: 'Template.templates',
      noRedeclare: true
    })
    .pipe(concat,'compiled.js')
    .pipe(header,'Template = {};\nTemplate.render = function(templateName, context) { return Handlebars.template(Template.templates[templateName])(context) };\n');

, , lazypipe .

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