build: reorder imports so debug mode works correctly (#1915)

This commit reorders the import statements os the parseCommandLine import happens
before calling the function. When working in debug mode, the current ordering fails.

Author: atscott

server/src/server.ts

@@ -6,14 +6,15 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+import {generateHelpMessage, parseCommandLine} from './cmdline_utils';
+
 // Parse command line arguments
 const options = parseCommandLine(process.argv);
 if (options.help) {
   console.error(generateHelpMessage(process.argv));
   process.exit(0);
 }
 
-import {generateHelpMessage, parseCommandLine} from './cmdline_utils';
 import {createLogger} from './logger';
 import {ServerHost} from './server_host';
 import {Session} from './session';
@@ -63,4 +64,4 @@ function main() {
   session.listen();
 }
 
-main();
+main();