Definitelytyped: [@types/validator] Circular definition of import alias 'Validator'.

[esetnik]

If you know how to fix the issue, make a pull request instead.

• [x] I tried using the @types/xxxx package and had problems.
• [x] I tried using the latest stable version of tsc. https://www.npmjs.com/package/typescript
• [x] I have a question that is inappropriate for StackOverflow. (Please ask any appropriate questions there).
• [x] [Mention](https://github.com/blog/821-mention-somebody-they-re-notified) the authors (see Definitions by: in index.d.ts) so they can respond.
  
  
  
  • Authors: @MunifTanjim @samuelneff @CodeAnimal @drinchev @babolivier @kukoo1 @oktapodia @MorpheusXAUT @TitaneBoy @zjy01 @nidzov @Raigen @todd @nrschultz @Thomas-B @Antoine38660 @smff @truongkhanhduy95 @emmanuelgautier @dancrumb @lalayueh @rohitsud @Torhal @tgfjt @chrootsu @IOAyman @louy @kacepe @deptno @builtinnya @qqilihq @keatz55
  
  

Example:

import validator from 'validator';

5:11:26 PM: ERROR in /opt/build/repo/node_modules/@types/validator/index.d.ts
5:11:26 PM: ERROR in /opt/build/repo/node_modules/@types/validator/index.d.ts(1247,8):
5:11:26 PM: TS2303: Circular definition of import alias 'Validator'.

It is caused by the release of @types/[email protected] (https://github.com/DefinitelyTyped/DefinitelyTyped/pull/40192)

[topwood]

mark

[topwood]

node_modules/_@[email protected]@@types/sequelize/index.d.ts:6296:33 - error TS2503: Cannot find namespace 'ValidatorJS'.

[oktapodia]

Related to https://github.com/DefinitelyTyped/DefinitelyTyped/pull/40192, I don't have time to do a PR right now unfortunately

[louy]

@topwood are you using an older version of sequelize types? I think that might be your issue, which is different to the other one

I’ll try to take a look later today. Strange how CI didn’t catch that circular reference

[topwood]

In my package.json

"sequelize": "^4.43.1",
"sequelize-typescript": "^0.6.9"

How to slove this? @louy Thank you !

[topwood]

[louy]

@topwood Can you try updating both packages to the latest?

npm i -S @types/sequelize@latest @types/validator@latest

[topwood]

It still do not work for me..sad

[louy]

@topwood yeah actually updating to the latest should give you the same issue as above

TS2303: Circular definition of import alias 'Validator'.

I have a fix in #40491

[EduardsE]

@louy is there any way to circumvent this until we wait for this to get merged?

[louy]

You can try using an older version of the types package

[EduardsE]

You can try using an older version of the types package

Is this possible if validator is a dependency of a dependency? In my case sequelize is using validator.

[EduardsE]

Ok, downgrading @types/sequelize from 4.28.8 to 4.28.1 solved my issue.

[Jeontaeyun]

i have same problem with
@types/[email protected] and @sequelize-typescript 1.0.0
how can i solve this problem?

[asmsuechan]

Have the same error. I downgraded @types/sequelize to the previous version 10.11.3 and my tsc is working fine now.

ref: https://github.com/DefinitelyTyped/DefinitelyTyped/pull/40192#issuecomment-555203904

[cjancsar]

@asmsuechan @types/sequelize latest version is 4.28.7, do you mean you downgraded to 4.28.6, or are you talking about a different lib?

Edit: Looks like you actually meant @types/validator to 10.11.3

That alone gets rid of namespace issues, but still errors out at circule dependency

[malord]

As a temporary workaround, installing both @types/[email protected] and @types/[email protected] worked for my project.

[louy]

@types/[email protected] should now solve this problem

[muyu66]

@types/[email protected] should now solve this problem

From my practice, @types/[email protected] cannot solve this problem.
my package.json is
"sequelize": "^5.21.3", "@types/validator": "^12.0.1",
I still have this error (Cannot find namespace 'ValidatorJS')

My solution was to remove the @types/validator package
npm remove @types/validator
Don't need to use it explicitly after all