0.13.4 misses @types/validator

[SchroederSteffen]

Did you read the migration guide?

• I have read the whole migration guide (there is none)

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Potential Commit/PR that introduced the regression

PR #72

Versions

0.13.3 -> 0.13.4

Describe the regression

Hi,

We upgraded to @nestjs/class-validator@0.13.4 and receive the following error during nest build:

Could not find a declaration file for module 'validator'.
Try `npm i --save-dev @types/validator` if it exists or add a new declaration (.d.ts) file containing `declare module 'validator';`

I saw that #72 removes the dependency.
Has this been an accidental merge issue or are we expected to install @types/validator ourselves?

Cheers,
Steffen

Minimum reproduction code

No response

Expected behavior

@nestjs/class-validator should work out-of-the-box.

Other

No response

[KeithGillette]

Updating to @nestjs/class-validator causes tsc to generate error TS7016: Could not find a declaration file for module 'validator'. I believe this shares the same root cause (removing @types/validator from package.json dependencies) as issue #1412 & issue #1535 in the original typestack/class-validator library from which this repository was forked.

[SchroederSteffen]

Thanks for the hint @KeithGillette! So, it's an upstream issue. (typestack@70278ab / typestack#1409).
Though, having a @types/ production dependency wouldn't be right anyways, as it's just required for the build. So, I would assume that it's more correct now. Agreed?
Then it's rather a documentation issue: "You need to npm i -D @types/validator yourself."

[kamilmysliwiec]

If someone wants to create a PR to this fork adding the validator declaration files, go for it! Contributions are more than welcome

[KeithGillette]

While installing @types/validator as a project development dependency will fix the transpilation error messages, @SchroederSteffen, since this is a published package that is consumed by other applications, I'm more in agreement with this StackOverflow answer supporting the previous practice of keeping @types/validator in dependencies so that it's available during development without that extra step.