How to Guarantee NSwag & Extension Code is Positioned at the Beginning of the File

In my project, I am using an ASP.Net Core 3.1 backend and a Typescript 3.8 front end.

I have been trying to configure NSwag to include authorization headers by following the guidelines provided in this documentation: https://github.com/RicoSuter/NSwag/wiki/TypeScriptClientGenerator#inject-an-authorization-header

(I've used the exact code snippet from the extensionCode file as suggested)

However, after NSwag generates the TypeScript output file, the extensionCode is placed at the bottom of the file. This causes issues with referencing the classes generated above it, resulting in TypeScript compilation errors. Manually moving the code to the top resolves the issue.

I noticed in the NSwag code that there may be a way to ensure that the extension code renders at the top using 'extendedClasses', but despite my attempts, I haven't been successful. I also tried adding 'extends generated.[Class Name]' as recommended in some sources, but that didn't work either (or perhaps I was implementing it incorrectly).

Can anyone provide suggestions on how I can resolve this issue and get the setup working smoothly?

Edit: Before I forget, here's a link to my nswag.json file: https://gist.github.com/mattgrande/075f05177191bf8daffbf51609e40267

c#typescriptnswag

Answer №1

After some investigation, I finally cracked the code. It turns out that I encountered two main issues:

  1. The configurationClass I was using was mistakenly defined as an interface.
  2. It seems that having comments above my base class caused unexpected problems.

Answer №2

I recently encountered the same issue and unfortunately, Matt Grande's solution did not work for me either. After some troubleshooting, I discovered a few key things that were causing the problem in my case.

  1. Interestingly, any comment containing the word "class" above the base class appeared to be causing issues.
  2. It is crucial to ensure that there is no indentation before the start of your class declaration. This could result in the generator placing your code at the bottom or generating export export class BaseClass. (I noticed that copying from the documentation introduces unnecessary indentation)
  3. Using an interface as your configurationClass seems to be a valid workaround, although it generates the configuration interface at the end of the file.

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