问ionic cordova build正在显示lint警告

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$ ionic cordova build --release android

 $ ionic cordova build --release android
    Running app-scripts build: --platform android --target cordova
    [22:57:28]  build dev started ...
    [22:57:28]  clean started ...
    [22:57:28]  clean finished in 9 ms
    [22:57:28]  copy started ...
    [22:57:30]  deeplinks started ...
    [22:57:31]  deeplinks finished in 416 ms
    [22:57:31]  transpile started ...
    [22:57:38]  transpile finished in 7.50 s
    [22:57:38]  preprocess started ...
    [22:57:38]  preprocess finished in less than 1 ms
    [22:57:38]  webpack started ...
    [22:57:40]  copy finished in 11.79 s
    [22:57:57]  webpack finished in 18.34 s
    [22:57:57]  sass started ...
    [22:57:59]  sass finished in 2.21 s
    [22:57:59]  postprocess started ...
    [22:57:59]  postprocess finished in 17 ms
    [22:57:59]  lint started ...
    [22:57:59]  build dev finished in 30.98 s
    > cordova build android --release

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Android Studio project detected

(node:7784) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property 'variables' of undefined
(node:7784) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[22:58:05]  tslint: ...der (8)/App Source Code/App Source Code/src/providers/shared-data/shared-data.ts, line: 71
            Property 'push' is declared but never used.

      L70:  public events: Events,
      L71:  private push: Push,
      L72:  public platform: Platform,

[22:58:05]  tslint: ...der (8)/App Source Code/App Source Code/src/providers/shared-data/shared-data.ts, line: 8
            'PushObject' is declared but never used.

       L7:  import { LoadingProvider } from '../loading/loading';
       L8:  import { Push, PushObject, PushOptions } from '@ionic-native/push';
       L9:  import { Device } from '@ionic-native/device';

[22:58:05]  tslint: ...der (8)/App Source Code/App Source Code/src/providers/shared-data/shared-data.ts, line: 8
            'PushOptions' is declared but never used.

       L7:  import { LoadingProvider } from '../loading/loading';
       L8:  import { Push, PushObject, PushOptions } from '@ionic-native/push';
       L9:  import { Device } from '@ionic-native/device';

[22:58:05]  tslint: ...der (8)/App Source Code/App Source Code/src/providers/shared-data/shared-data.ts, line: 10
            All imports are unused.

       L9:  import { Device } from '@ionic-native/device';
      L10:  import { Facebook } from '@ionic-native/facebook';
      L11:  import { FCM } from '@ionic-native/fcm';

[22:58:05]  tslint: ...zm/Desktop/New folder (8)/App Source Code/App Source Code/src/pages/cart/cart.ts, line: 44
            Property 'storage' is declared but never used.

      L43:  public toast: Toast,
      L44:  private storage: Storage,
      L45:  public events: Events,

[22:58:05]  tslint: ...op/New folder (8)/App Source Code/App Source Code/src/pages/products/products.ts, line: 8
            All imports are unused.

       L7:  import { TranslateService } from '@ngx-translate/core';
       L8:  import { share } from 'rxjs/operator/share';
       L9:  import { CartPage } from '../cart/cart';

[22:58:05]  lint finished in 6.59 s