Bug description

When updating from prisma 6.16.2 to 6.16.3 the migrate diff command suddenly returns exit code 1 with no other logs. AFAIK there is not like a --verbose option to help with debugging.

Severity

⚠️ Major: Breaks core functionality (e.g., migrations fail)

Reproduction

See this repo https://github.com/vdhpieter/prisma-migrate-diff-issue

Expected vs. Actual Behavior

Getting exit code 0 and the message No difference detected.. Or getting exit code 1 with more explanations.

Frequency

Consistently reproducible

Does this occur in development or production?

Only in development (e.g., CLI tools, migrations, Prisma Studio)

Is this a regression?

Yes it worked until prisma 6.16.2

Workaround

No workaround found

Prisma Schema & Queries

Not sure if it's relevant

generator client {
  provider        = "prisma-client-js"
  output          = "./__generated__"
  previewFeatures = ["typedSql"]
}

generator comments {
  provider = "prisma-db-comments-generator"
}

datasource db {
  provider = "postgresql"
  url      = env("DB_URL")
}

...

Prisma Config

import { defineConfig } from "prisma/config";

export default defineConfig({
  migrations: {
    seed: "ts-node seed.ts",
  },
});

Logs & Debug Info

No logs providen

Environment & Setup

• OS: macOS and in CI
• **Database: PostgreSQL
• **Node.js version: v24.5.0

Prisma Version

prisma                  : 6.16.3
@prisma/client          : 6.16.3
Computed binaryTarget   : darwin-arm64
Operating System        : darwin
Architecture            : arm64
Node.js                 : v24.5.0
TypeScript              : 5.9.3
Query Engine (Node-API) : libquery-engine bb420e667c1820a8c05a38023385f6cc7ef8e83a (at ../../../node_modules/prisma/node_modules/@prisma/engines/libquery_engine-darwin-arm64.dylib.node)
PSL                     : @prisma/prisma-schema-wasm 6.16.1-1.bb420e667c1820a8c05a38023385f6cc7ef8e83a
Schema Engine           : schema-engine-cli bb420e667c1820a8c05a38023385f6cc7ef8e83a (at ../../../node_modules/prisma/node_modules/@prisma/engines/schema-engine-darwin-arm64)
Default Engines Hash    : bb420e667c1820a8c05a38023385f6cc7ef8e83a
Studio                  : 0.511.0
Preview Features        : typedSql