Grunt: sending array of sourceFiles to grunt task uglify - gruntjs

Question

I can't seem to find the answer in the documentation. I want to send an array of sourceFiles from my package.json to the grunt task.
Here is my config.json
{
"sourceFiles": ["src/js/d3js/d3.js", "src/js/testingGrunt.js"]
}
and here is my gruntfile.js
module.exports = function(grunt) {
// Project configuration.
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
config: grunt.file.readJSON('config.json')
});
// Load the plugin that provides the concat tasks.
grunt.loadNpmTasks('grunt-contrib-concat');
// defining my concat task
grunt.config('concat', {
dist: {
//src: ['src/js/testingGrunt.js', 'src/js/d3js/d3.js'],
src: '<%config.sourceFiles%>',
dest: 'build/<%= pkg.name %>-build.js'
}
});
// Load the plugin that provides the uglify tasks.
grunt.loadNpmTasks('grunt-contrib-uglify');
// defining my uglify task
grunt.config('uglify', {
options: {
banner: '/*\n* ©<%= pkg.author%>\n* <%= pkg.name %>\n* <%= grunt.template.today("yyyy-mm-dd HH:mm:ss") %> \n*/\n'
},
build: {
src: 'build/<%= pkg.name %>-build.js',
dest: 'build/<%= pkg.name %>-build.min.js'
}
});
// Default task(s).
var defaultTasks;
defaultTasks = ['concat', 'uglify']
grunt.registerTask('default', defaultTasks);
};
The commented out line inside the grunt.config('concat',... works just fine. However I want to set up my gruntfile to read the files from the config file.
Eventually I'm going to be doing other things in this grunt task and I want to set it up so that I never need to edit the grunt file.

Answer 1

Looks like the template syntax is off try replacing:
src: '<%config.sourceFiles%>',
with the following:
src: '<%= config.sourceFiles %>',