SyntaxError: Unexpected token: punc ({)

[hypery2k]

[at-loader] Ok, 0.671 sec.
   [1] ./~/@angular/core/index.js 2.5 kB {0} [built]
  [12] ./~/rxjs/Subject.js 5.33 kB {0} [built]
  [13] ./~/rxjs/Subscription.js 5.99 kB {0} [built]
 [103] ./~/@angular/platform-browser/index.js 635 bytes {0} [built]
 [261] ./~/@angular/http/index.js 734 bytes {0} [built]
 [262] ./~/@angular/platform-browser-dynamic/index.js 395 bytes {0} [built]
 [263] ./test/app/app.ts 1.15 kB {0} [built]
 [264] ./~/rxjs/Rx.js 9.58 kB {0} [built]
 [265] ./~/zone.js/dist/long-stack-trace-zone.js 5.49 kB {0} [built]
 [266] ./~/zone.js/dist/zone.js 67 kB {0} [built]
 [267] ./test/~/reflect-metadata/Reflect.js 40.1 kB {0} [built] [1 warning]
 [489] ./~/rxjs/add/operator/windowCount.js 235 bytes {0} [built]
 [490] ./~/rxjs/add/operator/windowTime.js 229 bytes {0} [built]
 [641] ./test/app/main.browser.ts 2.46 kB {0} [built]
 [642] ./test/app/polyfills.browser.ts 27 bytes {1} [built]
    + 628 hidden modules

ERROR in main.338e45771fa54c6184a9.bundle.js from UglifyJs
SyntaxError: Unexpected token: punc ({) [main.338e45771fa54c6184a9.bundle.js:33286,7]