Nest: [PackageLoader] The "class-transformer" error reopen issue for nest 6.2.2

[NikitaIT]

https://github.com/nestjs/nest/issues/1386

[kamilmysliwiec]

It's not an issue. class-transformer is and will always be required if you use ValidationPipe

[NikitaIT]

@kamilmysliwiec I think should specify this clearly here https://docs.nestjs.com/techniques/validation

[guizoxxv]

I'm using NestJs 6.0.0 and importing ValidationPipe on main.ts as
import { ValidationPipe } from '@nestjs/common';

I receive the following error:
The "class-transformer" package is missing. Please, make sure to install this library ($ npm install class-transformer) to take advantage of ValidationPipe.

On the documentation page there is only mention that the class-validator package is used so I believe that this package is installed by default with NestJS.

The class-transformer package is an extension mentioned by class-validator GitHub page and after installing it npm install class-transformer the error was fixed.

Since ValidationPipe requires the class-transformer package I believe it should be listed as a dependency of NestJS or at least mentioned on the validation documentation page.

[lock[bot]]

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