Don't use uglify compress

src/meta/minifier.js

@@ -206,6 +206,7 @@ function minifyJS_batch(data, callback) {
 						url: filename + '.map',
 						includeSources: true,
 					},
+					compress: false,
 				});
 
 				async.parallel([
@@ -257,9 +258,7 @@ function minifyJS(data, callback) {
 					url: data.filename + '.map',
 					includeSources: true,
 				},
-				compress: {
-					hoist_funs: false,
-				},
+				compress: false,
 			});
 
 			async.parallel([

test/build.js

@@ -70,7 +70,7 @@ describe('minifier', function () {
 
 			assert.strictEqual(
 				fs.readFileSync(destPath).toString(),
-				'!function(n,o){n.doStuff=function(){o.body.innerHTML="Stuff has been done"}}(window,document);function foo(n,o){return\'The person known as "\'+n+\'" is \'+o+" years old"}' +
+				'(function(n,o){n.doStuff=function(){o.body.innerHTML="Stuff has been done"}})(window,document);function foo(n,o){return\'The person known as "\'+n+\'" is \'+o+" years old"}' +
 				'\n//# sourceMappingURL=minified.js.map'
 			);
 			done();
@@ -88,7 +88,7 @@ describe('minifier', function () {
 				assert.ifError(err);
 				assert.strictEqual(
 					buffer.toString(),
-					'!function(n,o){n.doStuff=function(){o.body.innerHTML="Stuff has been done"}}(window,document);' +
+					'(function(n,o){n.doStuff=function(){o.body.innerHTML="Stuff has been done"}})(window,document);' +
 					'\n//# sourceMappingURL=1.js.map'
 				);
 				done();