config.system.js

System.config({
            defaultJSExtensions: true,
            map: {
                "app": './src',
                "angular2": 'node_modules/angular2',
                "ng-semantic": 'node_modules/ng-semantic/semantic.js',
                'rxjs/operator/*' : 'node_modules/rxjs/add/operator/*',
                "rxjs": 'node_modules/rxjs',
                "reflect-metadata": 'node_modules/reflect-metadata/temp/Reflect.js',
                "zone.js": 'node_modules/zone.js/dist/zone.js'
            },
            paths: {
                // CHANGE PATHS
                'semantic/*': 'public/dist/components/*.js'
            },
            packages: {
                app: {
                    defaultExtension: 'js',
                    format: 'register'
                },
                angular2: {
                    defaultExtension: 'js',
                },
                rxjs: {
                    defaultExtension: 'js'
                },
                'reflect-metadata': {
                    format: 'global'
                }
            }
        });