weird errors dealing with env vars in convex functions

// works when client is init in the func
export const sendEmail = action({
  handler: async () => {
    const resend = new Resend(process.env.RESEND_API_KEY)

    await resend.emails.send({
      ...
    })
  },
})

// fails when client is init outside of the func
// 400 Bad Request: InvalidModules: Hit an error while pushing:
// Loading the pushed modules encountered the following
//     error:
// Failed to analyze purchaseOrderFuncs.js: Uncaught Error: Missing API key. Pass it to the constructor `new // Resend("re_123")`
const resend = new Resend(process.env.RESEND_API_KEY)

export const sendEmail = action({
  handler: async () => {
    await resend.emails.send({
      ...
    })
  },
})

// works when client is init outside of the func but using the real API key
const resend = new Resend("re_MY_API_KEY")

export const sendEmail = action({
  handler: async () => {
    await resend.emails.send({
      ...
    })
  },
})

node_modules/@t3-oss/env-nextjs/dist/index.d.ts:50:434 - error TS2536: Type 'k' cannot be used to index type 'addQuestionMarks<{ [k_1 in keyof TServer]: TServer[k_1]["_output"]; }, requiredKeys<{ [k_1 in keyof TServer]: TServer[k_1]["_output"]; }>>'.