question: cannot find namespace 'ValidatorJS'.

[nareshdavra302]

getting an error while transpile, tsc --project ./tsconfig.build.json

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

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

[yusufkhan07]

I am getting the same issue

[yusufkhan07]

Setting "esModuleInterop": true in compilerOptions in tsconfig.json file fixed it

[k-efimov]

Setting "esModuleInterop": true in compilerOptions in tsconfig.json file fixed it

I am getting the same issue and setting "esModuleInterop": true doesn't work for me.
I found that there is @types/validator in node_modules which is installed due to sequelize-typescript as peerDependencies. But it has the newer version("12.0.1").

[nareshdavra302]

setting "skipLibCheck": true in compilerOptions worked for me

[opgbaudouin]

I fixed the issue by setting @types/validator in devDependencies:

 "devDependencies": {
...
    "@types/validator": "13.0.0",
...
},
"dependencies": {
...
    "class-validator": "0.12.2",
    "class-transformer": "0.2.3",
    "class-transformer-validator": "0.8.0"
...
}

Setting "skibLibCheck": true would 'fix' the compiler error but you might as well NOT be using TS - so fail to understand the 12 upvotes.

[vlapo]

Please try class-validator@0.12. It should be fixed

[vlapo]

Closing in favour of #468

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.