bug:

_Original issue by @JessimZ on [2019-08-27T15:37:12Z](https://github.com/ionic-team/ionic/issues/19201)_

Hello,

We use Ionic for our company, KoZi Technology, my colleague is having a problem that I don't personally have.
He can't launch our application via the command "ionic serve", there is a problem with the npm library. Despite the fact that it has uninstalled and reinstalled it, the problem persists.

He used the command "ionic doctor check" and this is what appears :

[ERROR] Error while checking default-cordova-bundle-id-used:

Error
at new BaseError (/usr/local/lib/node_modules/ionic/node_modules/@ionic/cli-framework/errors.js:13:23)
at new BaseException (/usr/local/lib/node_modules/ionic/lib/errors.js:6:9)
at new FatalException (/usr/local/lib/node_modules/ionic/lib/errors.js:13:9)
⠏ Detecting issues: 8 / 9 complete
[ERROR] Error while checking unsaved-cordova-platforms:

Error
at new BaseError (/usr/local/lib/node_modules/ionic/node_modules/@ionic/cli-framework/errors.js:13:23)
at new BaseException (/usr/local/lib/node_modules/ionic/lib/errors.js:6:9)
at new FatalException (/usr/local/lib/node_modules/ionic/lib/errors.js:13:9)

Thank you in advance for helping us, we remain available by email.

jesszitouni@gmail.com
jessim.zitouni@kozitechnology.com

首先使用 `ionic serve` 和 `ionic doctor check` 重現故障，並以 `@ionic/cli-framework/errors.js` 和 `ionic/lib/errors.js` 中回報的錯誤作為切入點。檢查觸發 `default-cordova-bundle-id-used` 和 `unsaved-cordova-platforms` 所需的環境與專案詳細資訊；當檢查在沒有這些錯誤的情況下完成，且 `ionic serve` 啟動時，即表示完成。

由索引模型根據 Issue 內容生成。