Advantages of incorporating types through imports versus relying solely on declaration files in Typescript

We are currently in the process of switching from plain JavaScript to TypeScript. One aspect that I personally find frustrating is the need to import types. In my opinion, importing types serves no real purpose other than cluttering up the import section. Instead, I have discovered that by defining my types in a declaration file, I can avoid the need to import them altogether. However, many of my colleagues argue that importing types is superior to using a "global" declaration. I remain unconvinced... Can anyone provide insights into the advantages of importing types as opposed to defining them in a declarations file? Thanks in advance.

Answer №1

When you import types from files, it eliminates the possibility of duplicates, which is especially beneficial for large codebases where type names could potentially clash.

Ultimately, the choice between importing types and using a global type file comes down to personal preference. Both approaches are valid, but it's important to be aware that a global type file can quickly become overcrowded.

Check out what others have said on this topic: reddit

Best of luck with your transition!

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