[Pkg-javascript-devel] Grunt plugins not found by Grunt

[Ben Finney]

Howdy all,

I am attempting to satisfy the build dependencies for a package using
Grunt as its build system. The Grunt task is not finding the plug-ins
installed by the Debian packages for those plug-ins.

The ‘Gruntfile.js’ (attached to this message)
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 declares these plug-in
dependencies with:

    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-uglify');

which are then referenced in the task definition:

    grunt.registerTask('default', ['connect', 'watch']);
    grunt.registerTask('build', ['concat', 'uglify']);

So, I have these build dependencies in ‘debian/control’ (attached to
this message) 
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:

    Build-Depends:
        grunt,
        node-grunt-contrib-concat,
        node-grunt-contrib-uglify,
        debhelper (>= 10~)

and those packages are installed:

    $ aptitude search 'grunt-contrib' | grep '^i'
    i A node-grunt-contrib-concat - Concatenate files
    i A node-grunt-contrib-uglify - Minify JavaScript files with UglifyJS

Yet, with those packages installed, Grunt complains the libraries are
not installed:

    $ grunt build
    >> Local Npm module "grunt-contrib-concat" not found. Is it installed?
    >> Local Npm module "grunt-contrib-uglify" not found. Is it installed?
    Warning: Task "concat" not found. Use --force to continue.

    Aborted due to warnings.

What have I done wrong? How is the Debian ‘grunt’ package not finding
Grunt libraries installed by other Debian packages?

-- 
 \      “Compulsory unification of opinion achieves only the unanimity |
  `\        of the graveyard.” —Justice Roberts in 319 U.S. 624 (1943) |
_o__)                                                                  |
Ben Finney