Nodemailer: usage causes build to fail while dev server works just fine

[whateverneveranywhere]

Environment

  System:
    OS: macOS 14.5
    CPU: (11) arm64 Apple M3 Pro
    Memory: 74.84 MB / 18.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.11.0 - ~/.nvm/versions/node/v20.11.0/bin/node
    Yarn: 1.22.22 - ~/Desktop/projects/side-projects/test/test-app/node_modules/.bin/yarn
    npm: 10.2.3 - ~/Desktop/projects/side-projects/test/test-app/node_modules/.bin/npm
    pnpm: 8.15.1 - ~/Library/pnpm/pnpm
  Browsers:
    Chrome: 125.0.6422.76
    Safari: 17.5
  npmPackages:
    @auth/drizzle-adapter: ^1.1.0 => 1.1.0 
    next: 14.2.3 => 14.2.3 
    next-auth: ^5.0.0-beta.18 => 5.0.0-beta.18 
    react: 18.3.1 => 18.3.1 
    ```


### Reproduction URL

https://github.com/whateverneveranywhere/filliny-app/

### Describe the issue


Hi all. so, 
installing a create-next-app out of the box with 0 changes, 
with the auth js and next auth versions as above,
and given this auth.ts file:

import Nodemailer from '@auth/core/providers/nodemailer';
import { DrizzleAdapter } from '@auth/drizzle-adapter';
import type { NextAuthConfig } from 'next-auth';
import NextAuth from 'next-auth';

import { sendVerificationRequest } from '@/lib/sendVerificationRequest';
import { sendWelcomeEmail } from '@/lib/sendWelcomeEmail';

import { db } from './db';

export const authConfig = {
adapter: DrizzleAdapter(db),
providers: [
Nodemailer({
server: 'smtp://test@test.io:test@test.test.io:587',
from: 'xxxxx@xxxxx.xxxxxx',
sendVerificationRequest
})
],
callbacks: {
async session({ session, user }) {
// eslint-disable-next-line no-param-reassign
session.user.id = user.id;
return session;
}
},

pages: {
signIn: '/auth/sign-in',
verifyRequest: '/auth/verify-request',
error: '/auth/error'
},
events: {
async createUser(message) {
const params = {
name: message.user.name,
email: message.user.email
};
await sendWelcomeEmail(params);
}
}
} satisfies NextAuthConfig;

export const { handlers, auth, signOut, signIn } = NextAuth(authConfig);

running the next js's out of the box build command d with zero configuration changes is throwing me this error:

next build

▲ Next.js 14.2.3

• Environments: .env

Creating an optimized production build ...
[webpack.cache.PackFileCacheStrategy] Caching failed for pack: Error: Unable to snapshot resolve dependencies
[webpack.cache.PackFileCacheStrategy] Caching failed for pack: Error: Unable to snapshot resolve dependencies
Failed to compile.

./node_modules/nodemailer/lib/dkim/index.js:10:1
Module not found: Can't resolve 'fs'

https://nextjs.org/docs/messages/module-not-found

Import trace for requested module:
./node_modules/nodemailer/lib/mailer/index.js
./node_modules/nodemailer/lib/nodemailer.js
./node_modules/@auth/core/providers/nodemailer.js
./src/auth.ts
./src/app/api/v1/[[...route]]/route.ts
./node_modules/next/dist/build/webpack/loaders/next-edge-app-route-loader/index.js?absolutePagePath=private-next-app-dir%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute.ts&page=%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute&appDirLoader=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%3D%3D&nextConfigOutput=&preferredRegion=&middlewareConfig=e30%3D!

./node_modules/nodemailer/lib/dkim/index.js:11:1
Module not found: Can't resolve 'path'

https://nextjs.org/docs/messages/module-not-found

Import trace for requested module:
./node_modules/nodemailer/lib/mailer/index.js
./node_modules/nodemailer/lib/nodemailer.js
./node_modules/@auth/core/providers/nodemailer.js
./src/auth.ts
./src/app/api/v1/[[...route]]/route.ts
./node_modules/next/dist/build/webpack/loaders/next-edge-app-route-loader/index.js?absolutePagePath=private-next-app-dir%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute.ts&page=%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute&appDirLoader=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%3D%3D&nextConfigOutput=&preferredRegion=&middlewareConfig=e30%3D!

./node_modules/nodemailer/lib/dkim/index.js:12:1
Module not found: Can't resolve 'crypto'

https://nextjs.org/docs/messages/module-not-found

Import trace for requested module:
./node_modules/nodemailer/lib/mailer/index.js
./node_modules/nodemailer/lib/nodemailer.js
./node_modules/@auth/core/providers/nodemailer.js
./src/auth.ts
./src/app/api/v1/[[...route]]/route.ts
./node_modules/next/dist/build/webpack/loaders/next-edge-app-route-loader/index.js?absolutePagePath=private-next-app-dir%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute.ts&page=%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute&appDirLoader=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%3D%3D&nextConfigOutput=&preferredRegion=&middlewareConfig=e30%3D!

./node_modules/nodemailer/lib/dkim/relaxed-body.js:6:1
Module not found: Can't resolve 'crypto'

https://nextjs.org/docs/messages/module-not-found

Import trace for requested module:
./node_modules/nodemailer/lib/dkim/index.js
./node_modules/nodemailer/lib/mailer/index.js
./node_modules/nodemailer/lib/nodemailer.js
./node_modules/@auth/core/providers/nodemailer.js
./src/auth.ts
./src/app/api/v1/[[...route]]/route.ts
./node_modules/next/dist/build/webpack/loaders/next-edge-app-route-loader/index.js?absolutePagePath=private-next-app-dir%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute.ts&page=%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute&appDirLoader=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%3D%3D&nextConfigOutput=&preferredRegion=&middlewareConfig=e30%3D!

./node_modules/nodemailer/lib/dkim/sign.js:5:1
Module not found: Can't resolve 'crypto'

https://nextjs.org/docs/messages/module-not-found

Import trace for requested module:
./node_modules/nodemailer/lib/dkim/index.js
./node_modules/nodemailer/lib/mailer/index.js
./node_modules/nodemailer/lib/nodemailer.js
./node_modules/@auth/core/providers/nodemailer.js
./src/auth.ts
./src/app/api/v1/[[...route]]/route.ts
./node_modules/next/dist/build/webpack/loaders/next-edge-app-route-loader/index.js?absolutePagePath=private-next-app-dir%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute.ts&page=%2Fapi%2Fv1%2F%5B%5B...route%5D%5D%2Froute&appDirLoader=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%3D%3D&nextConfigOutput=&preferredRegion=&middlewareConfig=e30%3D!

Build failed because of webpack errors

I tried removing the nodemailer provider and things immediately started working back again. seems like whatever this is, it's happening as a result of nodemailer provider. 

any workaround is appreciated in the meantime while the beta version gets stable! 


### How to reproduce

just try to use nodemailer in any out-of-the-box next js app that's bundled up using "create-next-app" and is on the app directory 

### Expected behavior

expected result is to see a successful build since this works just as fine on the dev server. 

[github-actions]

We could not detect a valid reproduction link. Make sure to follow the bug report template carefully.

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To be able to investigate, we need access to a reproduction to identify what triggered the issue. We need a link to a public GitHub repository. Example: (NextAuth.js example repository).

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Useful Resources

• How to create a Minimal, Complete, and Verifiable example
• Bug report: Framework
• Bug report: Provider
• Bug report: Adapter