[BUG] Getting linting errors but the code is working as expected

[punit1108]

Describe the bug
I am getting lint errors when trying to use CognitoJwtVerifier.create with an array of CognitoJwtVerifierProperties. But the code is working as expected.

same goes for verifier.verify(authToken, verifierParams)

where verifierParams is a CognitoJwtVerifierProperties

Versions
Which version of aws-jwt-verify are you using? 4.0.0
Are you using the library in Node.js or in the Web browser? Node.js
If Node.js, which version of Node.js are you using? (Should be at least 14) 18.6.0
If Web browser, which web browser and which version of it are you using?
If using TypeScript, which version of TypeScript are you using? (Should be at least 4) 5.1.3

To Reproduce
If you can, please provide a minimal code example that reproduces the bug.

    const verifier = CognitoJwtVerifier.create([{
      userPoolId: (process.env.USER_COGNITO_USER_POOL_ID as string),
      tokenUse: TOKEN_USE,
      clientId: process.env.USER_COGNITO_CLIENT_ID,
    }, {
      userPoolId: (process.env.AGENT_COGNITO_USER_POOL_ID as string),
      tokenUse: TOKEN_USE,
      clientId: process.env.AGENT_COGNITO_CLIENT_ID,
    }])

    const user = await verifier.verify(authToken, verifierParams)

[ottokruse]

Can you try cast the clientId also as string (or add exclamation mark after, eg process.env.USER_COGNITO_CLIENT_ID!).

If you use an array, as you do, these fields are mandatory, which is why this shows as an error. (TS does not know that at runtime those env vars will have a value)

[punit1108]

I tried both the things mentioned above. Doesn't fix the warnings.

[ottokruse]

This should work (assuming TOKEN_USE is inferred by TS as "id" | "access"):

const verifier = CognitoJwtVerifier.create([{
      userPoolId: process.env.USER_COGNITO_USER_POOL_ID!,
      tokenUse: TOKEN_USE,
      clientId: process.env.USER_COGNITO_CLIENT_ID!,
    }, {
      userPoolId: process.env.AGENT_COGNITO_USER_POOL_ID!,
      tokenUse: TOKEN_USE,
      clientId: process.env.AGENT_COGNITO_CLIENT_ID!,
    }])

Paste a screen shot of the error with those modifications please?

[punit1108]

export type TokenUse = 'id' | 'access'

export const userParams: CognitoJwtVerifierProperties = {
  userPoolId: process.env.USER_COGNITO_USER_POOL_ID!,
  tokenUse: ('id' as TokenUse),
  clientId: process.env.USER_COGNITO_CLIENT_ID!,
}

export const agentParams: CognitoJwtVerifierProperties = {
  userPoolId: process.env.AGENT_COGNITO_USER_POOL_ID!,
  tokenUse: ('id' as TokenUse),
  clientId: process.env.AGENT_COGNITO_CLIENT_ID!,
}

There you go @ottokruse

[ottokruse]

You're battling TypeScript ;) Don't cast userParams and agentParams as CognitoJwtVerifierProperties --> that type is to be used with a single user pool verifier, but you are using multi (because you're passing an array of config options). Instead use CognitoJwtVerifierMultiProperties.

export type TokenUse = 'id' | 'access'

export const userParams: CognitoJwtVerifierMultiProperties = {
  userPoolId: process.env.USER_COGNITO_USER_POOL_ID!,
  tokenUse: ('id' as TokenUse),
  clientId: process.env.USER_COGNITO_CLIENT_ID!,
}

export const agentParams: CognitoJwtVerifierMultiProperties = {
  userPoolId: process.env.AGENT_COGNITO_USER_POOL_ID!,
  tokenUse: ('id' as TokenUse),
  clientId: process.env.AGENT_COGNITO_CLIENT_ID!,
}

[punit1108]

This fixes the problem. Marking the issue closed.

Thank you @ottokruse