forced require of non-existant buffer

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 6.8.0
• Cross-platform modules: 6.5.15
• Android Runtime: 6.5.3
• iOS Runtime: 6.5.2

Describe the bug
After updating the node_modules in my project including js-base64, starting the app resulted in an exception on trying to require the module buffer, which was never anywhere explicitly required.

According to the author (https://github.com/dankogai/js-base64/issues/126#issuecomment-674838031) the new version does check for existence of the Buffer object to maybe use it if available.

Expected behavior

Either do not add the require('buffer') or add buffer to the dependencies if not already there.

首先，使用列出的 NativeScript 版本重現應用程式啟動，並檢查從 js-base64 到無法使用的 buffer 模組的相依性路徑。檢查 CLI 的相依性宣告和啟動處理；當應用程式不再嘗試執行無法使用的 require 時即完成，無論是因為相依性可用，還是因為未引入 require。