PrismaAdapter is broken with new "strictUndefinedChecks" preview feature

[petergoldstein]

Adapter type

@auth/prisma-adapter

Environment

 System:
    OS: macOS 14.6.1
    CPU: (12) arm64 Apple M2 Pro
    Memory: 73.50 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.17.0 - /opt/homebrew/opt/node@20/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.8.2 - /opt/homebrew/opt/node@20/bin/npm
    pnpm: 8.14.0 - /opt/homebrew/bin/pnpm
  Browsers:
    Chrome: 129.0.6668.71
    Safari: 17.6
  npmPackages:
    @auth/prisma-adapter: ^2.5.3 => 2.5.3 
    next: ^14.2.13 => 14.2.13 
    next-auth: ^4.24.8 => 4.24.8 
    react: ^18.2.0 => 18.3.1 

Reproduction URL

https://github.com/tbd

Describe the issue

When using the new "strictUndefinedChecks" prisma preview feature, NextAuth generates an error when creating a user that has attributes that are not set in the data received from the provider

Invalid value for argument `data`: explicitly `undefined` values are not allowed. {
  message: '\n' +
    'Invalid `prisma.user.create()` invocation:\n' +
    '\n' +
    '{\n' +
    '  data: {\n' +
    '    name: "Goldstein, Peter",\n' +
    '    email: "[email protected]",\n' +
    '    image: undefined,\n' +
    '           ~~~~~~~~~\n' +
    '    emailVerified: null\n' +
    '  }\n' +
    '}\n' +
    '\n' +
    'Invalid value for argument `data`: explicitly `undefined` values are not allowed.',
  stack: 'PrismaClientValidationError: \n' +
    'Invalid `prisma.user.create()` invocation:\n' +
    '\n' +
    '{\n' +
    '  data: {\n' +
    '    name: "Goldstein, Peter",\n' +
    '    email: "[email protected]",\n' +
    '    image: undefined,\n' +
    '           ~~~~~~~~~\n' +
    '    emailVerified: null\n' +
    '  }\n' +
    '}\n' +
    '\n' +
    'Invalid value for argument `data`: explicitly `undefined` values are not allowed.\n' +
    '    at Dn (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:8082)\n' +
    '    at e.throwValidationError (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:13383)\n' +
    '    at ml (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:12142)\n' +
    '    at dl (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:11616)\n' +
    '    at ml (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:12085)\n' +
    '    at Dr (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:9214)\n' +
    '    at pl (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:114:9079)\n' +
    '    at /Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:130:10186\n' +
    '    at Object.runInChildSpan (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:121:1519)\n' +
    '    at t._executeRequest (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:130:10165)\n' +
    '    at fa (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:30:5477)\n' +
    '    at l (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:130:9639)\n' +
    '    at /Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:130:9933\n' +
    '    at AsyncResource.runInAsyncScope (node:async_hooks:206:9)\n' +
    '    at /Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:130:9913\n' +
    '    at Object.runInChildSpan (/Users/peter.goldstein/Development/octo-source/hearst-assistant-4/node_modules/@prisma/client/runtime/library.js:121:1519)\n' +

How to reproduce

1. In a Prisma application, using a recent (5.20.0+) prisma engine, enable the "strictUndefinedChecks" previewFeature in the schema definition. Set something like:

generator client {
provider = "prisma-client-js"
previewFeatures = ["strictUndefinedChecks"]
binaryTargets = ["native", "debian-openssl-3.0.x"]
}

in the 'prisma/schema.prisma` file.

2. Set up NextAuth with Okta (or any other provider) that has an optional attribute. In this case image
3. Authenticate as a user without an image
4. User record creation will fail

Expected behavior

In step 4, user creation should succeed