Typescript Args error: Argument of type '{ bucket: string; userId: string; }' is not assignable to parameter of type 'void'

[teddybee]

I would like to put more than one args (or one object with several fields) for the IFileSaver's save method. How can I do that<
Typescript compiler shows error if I do something like this:

 const inputFileName = task.image.save({
      bucket: BUCKET,
      userId: userId,
    });

Argument of type '{ bucket: string; userId: string; }' is not assignable to parameter of type 'void'.ts(2345)

[teddybee]

I may suggest something like this for args type instead of void.

type OptionalSpread<T> =
    T extends undefined
    ? []
    : [T]

The usage is explaned on the bottom of this article.
https://minajevs.medium.com/how-to-make-function-parameters-optional-in-typescript-8cb4fa22171d

[h3llmy]

I may suggest something like this for args type instead of void.

type OptionalSpread<T> =
    T extends undefined
    ? []
    : [T]

The usage is explaned on the bottom of this article. https://minajevs.medium.com/how-to-make-function-parameters-optional-in-typescript-8cb4fa22171d

for custom save method type, you can create your own FileData type on the dto

import { FileData } from 'nestjs-formdata-interceptor';

interface FileSaveMethodPayload {
  bucket: string;
  userId: string;
}
type S3FileData = FileData<Promise<string>, FileSaveMethodPayload>;

export class UploadFileDto {
  image: S3FileData;
}

and then you can add bucket and userId to save method like this

const inputFileName = task.image.save({
      bucket: BUCKET,
      userId: userId,
    });