Class-validator: fix: error TS2503: Cannot find namespace 'ValidatorJS'.

[cjancsar]

Just installed class-validator into a new Nest.js project, also manually intalled types.

Getting the above error for basically all validators when trying to start app:

node_modules/class-validator/validation/Validator.d.ts:383:38 - error TS2503: Cannot find namespace 'ValidatorJS'.

383     isISSN(value: unknown, options?: ValidatorJS.IsISSNOptions): boolean;

[rubiin]

can you share a repo ? I am not having any problems so I can tr to reproduce and if found , fix the problem

[cjancsar]

Can close this, not sure what happened, but doing a yarn install somehow fixed it...?

[cjancsar]

This is now happening on a new project, so bizarre...

[cjancsar]

This is the cause of the issue https://github.com/DefinitelyTyped/DefinitelyTyped/issues/40477

[iam4x]

I'm using validator itself in my project and I'm running into this issue as well.

• $ yarn add -D @types/[email protected]

Solves the issue in the meantime

[vlapo]

Looks like breaking changes in @types/validator. But why you need @types/validator in your project? validator and @types/validator are only internal class-validator dependencies. I think you can completely remove them from your package.json.

[iam4x]

I'm using import { normalizeEmail } from 'validator'; in my codebase.

  public findByEmail(unsanitizedEmail: string | string[]) {
    const whereCondition = (email: string) => [
      { email },
      { email: normalizeEmail(email) },
      { unsanitizedEmail: email },
      { unsanitizedEmail: normalizeEmail(email) },
    ];

    return this.findOne({
      where: Array.isArray(unsanitizedEmail)
        ? flatten(unsanitizedEmail.map(whereCondition))
        : whereCondition(unsanitizedEmail),
    });
  }

[cjancsar]

@vlapo I need validator and @types/validator because I am using sequelize-typescript (https://www.npmjs.com/package/sequelize-typescript) which also has them as a dependency. They should be made peer depedencies of this lib to avoid conflicts like this.

[zcong1993]

@cjancsar try to add this to your tsconfig.json

{
  "compilerOptions": {
    ...
    "typeRoots": ["./node_modules/*/node_modules/@types/"]
  }
...
}

[vlapo]

Please try [email protected]. It should be fixed

[rafaelwalter]

@vlapo still facing same issue on [email protected]

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