Automatically wrapping files in IIFEs

gruntfile.js

grunt.initConfig({
  concat: {
    dist: {
      src: ['src/*.js'],
      dest: 'dist/app.js',
      options: {
        process: wrapInIIFE
      }
    },
  },
});

function wrapInIIFE(src, filepath) {
	var header = '(function() { \n';
	var footer = '\n})();\n';
	return header + src + footer;
}