Dependencies for Grunt tasks

I am facing some issues with a grunt task named taskA that was installed via npm. The task has a dependency on grunt-contrib-stylus, which is specified in the package.json file of taskA and installed successfully. However, when I run grunt default from the main Gruntfile.js, an error occurs.


Warning: Task "stylus" not found. Use --force to continue.

The solution to this issue seems to be requiring grunt-contrib-stylus in the main project. But I would prefer to find a way around this. Why is my task not utilizing the grunt-contrib-stylus module present in its node_modules folder?

taskA

module.exports = function(grunt) {
'use strict';

grunt.loadNpmTasks('grunt-contrib-stylus');
...

Main Gruntfile.js

...
grunt.loadNpmTasks('taskA');
...
javascriptnpmgruntjs

Answer №1

grunt.loadNpmTasks will load tasks from 

[cwd]/node_modules/[modulename]/tasks/
. To load a task as a dependency, you can modify the cwd:

taskA

module.exports = function(grunt) {
  var parentDir = process.cwd();
  process.chdir(__dirname);

  grunt.loadNpmTasks('grunt-contrib-stylus');

  process.chdir(parentDir);
};

Remember to reset the cwd to the parent directory at the end.

Answer №2

Recently discovered a clever solution using node techniques. Even with kyle-robinson-young's approach, you may still encounter issues if your task depends on another task through peerDependencies or is nested.

But fear not, there's a workaround!

Inside your taskA:

module.exports = function(grunt) {
  require('grunt-contrib-stylus/tasks/stylus')(grunt);
  // Other tasks to include
}

Interestingly, Grunt doesn't seem to mind if a task is linked via registerMultiTask or registerTask multiple times.

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