tasks/lib/javascript.js
function(config, env) {
		return env.grunt.util._.extend({
			banner: '',
			compress: {
				warnings: false
			},
			mangle: {},
			beautify: false,
			report: false
		}, env.task.options(config.uglify || {}));
	}
function(config, env) {
		return env.grunt.util._.extend({
			banner: '',
			compress: {
				warnings: false
			},
			mangle: {},
			beautify: false,
			report: false
		}, env.task.options(config.uglify || {}));
	}
function ( config , env ) { return env . grunt . util . _ . extend ( { banner : '' , compress : { warnings : false } , mangle : { } , beautify : false , report : false } , env . task . options ( config . uglify || { } ) ) ; }
Returns config for UglifyJS
@param {Objecy} config Current config
@param {Objecy} env    Task environment (`grunt` and `task` properties)
@return {Object}
Returns config for UglifyJS