在不同情況下寫宣告檔案的幾種方式

[Yu-Jack]

1. JS + JSDoc with TS server typing check in VSCode
2. pure TS only for runtime use
3. pure TS library for other people usage as third-party library
4. pure TS for extending third-party library use

參考資料

• https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-9.html#import-types
• https://willh.gitbook.io/typescript-tutorial/basics/declaration-files
• https://stackoverflow.com/questions/39040108/import-class-in-definition-file-d-ts