gulp-help 
 
 
Adds a default help task to gulp and provides the ability to add custom help messages to your gulp tasks
NOTE: this version only works with gulp 3. For gulp-help that works with gulp 4, see the gulp4 git branch
Install
$ npm install --save-dev gulp-help 
Usage
Before defining any tasks, add gulp help to your gulp instance
// gulpfile.js
var gulp = require('gulp-help')(require('gulp')); 
Next, define help text for each custom task
// gulpfile.js
gulp.task('lint', 'Lints all server side js', function () {
    gulp.src('./lib/**/*.js')
      .pipe(jshint());
}); 
Now show that help via gulp help
New task API
gulp.task(name[, help, deps, fn, taskOptions])
name
Type: string
help
Type: string | boolean
Custom help message as a string.
If you want to hide the task from the help menu, supply false
gulp.task('task-hidden-from-help', false, function () {
  // ...
}); 
However, if the --all flag is provided, even these tasks will be shown. (i.e. gulp help --all)
deps
Type: Array
fn
Type: function
taskOptions.aliases
Type: Array
List of aliases for this task
gulp.task('version', 'prints the version.', [], function() {
  // ...
}, {
  aliases: ['v', 'V']
}); 
which results in
taskOptions.options
Type: Object
Object documenting options which can be passed to your task
gulp.task('version', 'prints the version.', [], function () {
  // ...
}, {
  options: {
    'env=prod': 'description of env, perhaps with available values',
    'key=val': 'description of key & val',
    'key': 'description of key'
  }
}); 
which results in
require('gulp-help')(require('gulp'), options);
These are all the options available to be passed to the gulp-help instance, NOT individual tasks.
description- modifies the default help messagealiases- adds aliases to the default help taskhideEmpty- hide all tasks with no help message defined. Useful when including 3rd party taskshideDepsMessage- hide all task dependenciesafterPrintCallback- a function to run after the default help task runs
License
MIT © Chris Montgomery


