node package manager

gulp-require-tasks

gulp-require-tasks

npm version

This convenient module allows you to load Gulp tasks from the multiple individual files and directory hierarchy.

Features

  • Loads individual task files recursively from the specified directory
  • The name of the task is inferred from the directory structure, e.g. styles:preprocess:clean
  • Easily integrates into the gulpfile.js without breaking your existing tasks
  • Gulp instance and task callback are automatically passed to your task function
  • Very flexible: almost all aspects of the module is configurable
  • Each task is stored in it's own local node module to completely separate concerns

Installation

Install library with yarn

yarn add -D gulp-require-tasks

Usage

Create a directory alongside your gulpfile.js to store your individual task modules, e.g. ./gulp-tasks. Place your tasks into this directory. One task per JavaScript file. Use sub-directories to structure your tasks.

Load tasks from your gulpfile.js:

 
// gulpfile.js: 
 
// Require the module. 
const gulpRequireTasks = require('gulp-require-tasks');
 
// Invoke the module with options. 
gulpRequireTasks({
  
  // Specify path to your tasks directory. 
  path: process.cwd() + '/gulp-tasks' // This is default! 
  
  // Additionally pass any options to it from the table below. 
  // ... 
  
});
 
// Or, use minimal invocation possible with all options set to defaults. 
gulpRequireTasks();
 

Minimal Gulp file possible

// gulpfile.js: 
require('gulp-require-tasks')();

Or with options:

// gulpfile.js: 
require('gulp-require-tasks')({
  separator: '.'
});

Options

Property Default Value Description
path './gulp-tasks' Path to directory from which to load your tasks modules
separator : Task name separator, your tasks would be named, e.g. foo:bar:baz for ./tasks/foo/bar/baz.js
passGulp true Whether to pass Gulp instance as a first argument to your task function
passCallback true Whether to pass task callback function as a last argument to your task function
gulp require('gulp') You could pass your existing Gulp instance if you have one, or it will be required automatically

Task module format

Consider you have the following task module: gulp-tasks/styles/build.js.

Module as a function

You could define module as a task function. Gulp instance and callback function would be passed to it, if not configured otherwise.

You could configure the library to pass additional arguments as well.

 
// gulp-tasks/styles/build.js: 
 
const compass = require('compass');
 
module.exports = function (gulp, callback) {
  return gulp.src('...')
    .pipe(compass())
    .pipe(gulp.dest('...'))
  ;
};

Module as an object

Also, you could define your task module as an object. This will allow you to provide additional configuration.

 
// gulp-tasks/styles/build.js: 
 
const compass = require('compass');
 
module.exports = {
  deps: ['styles:clean', 'icons:build'],
  fn: function (gulp, callback) {
    return gulp.src('...')
      .pipe(compass())
      .pipe(gulp.dest('...'))
    ;
  }
};

You will have to define your task function as fn parameter. You could use deps parameter to define your task dependencies.

Also, you could use nativeTask instead of fn property to make your task function executed by Gulp directly. That way, additional arguments will not be passed to it. This feature is useful when using, e.g. gulp-sequence plugin or for synchronous tasks.

Task function return value

To make sure, that task is finished correctly you must either:

  • Return a proper Gulp stream from the task function, e.g.: return gulp.src().pipe(gulp.dest());
  • Return a valid Promise (thenable object), e.g.: return del(); or return new Promise();
  • Call a callback function passed to it, e.g.: callback();

WARNING: If your task function is synchronous — please read the section below!

Using root directory tasks

Starting from version 1.1.0 you can place index.js inside of the task directories. The actual task, registered with Gulp will have the name of the directory itself, e.g.: scripts/build/index.js will become: scripts:build.

The index.js, placed in the root of tasks directory, will be registered as a default task.

Passing data to the task function

If you need to pass something to the task function from your gulpfile you can use globals.

Define your custom properties on the global object:

// gulpfile.js 
 
global.SOURCES_BASE_PATH = __dirname + '/src';

And then use it in your task module:

// gulp/tasks/styles/build.js 
module.exports = gulp => 
  gulp.src(global.SOURCES_BASE_PATH + '/styles/*.scss')
    .pipe(compass())
    .pipe(gulp.dest(''))
;

Synchronous tasks

If you are using synchronous tasks, i.e. tasks which execute synchronously without returning streams, promises or accepting callbacks, you will have to use one of the workarounds specified below:

1). The simplest method is to use nativeTask functionality, here's the example of the module with native task synchronous function:

module.exports = {
  nativeTask: function () {
    console.log('This is the synchronous native task without a callback!');
  }
};

2). You should call a callback explicitly:

module.exports = function (gulp, callback) {
  console.log('This is the synchronous native task with explicit callback!');
  callback(); // Don't forget this, otherwise task will never finish! 
};

However, if config.passCallback == false you won't be able to use the second method.

These workarounds must be used due to architectural limitation of this module integration with orchestrator. Please see the issue #9: Synchronous tasks without callback don't finish for more technical details.

Changelog

Please see the changelog for list of changes.

Feedback

If you have found a bug or have another issue with the library — please create an issue.

If you have a question regarding the library or it's integration with your project — consider asking a question at StackOverflow and sending me a link via E-Mail. I will be glad to help.

Have any ideas or propositions? Feel free to contact me by E-Mail.

Cheers!

Support

If you like this library consider to add star on GitHub repository.

Thank you!

License

The MIT License (MIT)

Copyright (c) 2016-2017 Slava Fomin II, BETTER SOLUTIONS

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.