String[] arrays removed by transformation

[abett]

Problem:

It seems that upon running npx prisma-schema-transformer, my String[] fields are being written back simply as String, which causes GraphQL queries to fail subsequently.

model App {
  app_id                   String           @id @default(dbgenerated())
  languages                String[]

  @@map("app")
}

becomes

model App {
  app_id                   String           @id @default(dbgenerated())
  languages                String

  @@map("app")
}

Error Message:

Just for reference, the error I received was:

{
  "errors": [
    {
      "message": "\nInvalid `prisma.app.findFirst()` invocation in\n/opt/app/prisma/generated/type-graphql/resolvers/crud/App/AppCrudResolver.ts:33:27\n\n\n  Attempted to serialize scalar '[String(\"EN\")]' with incompatible type 'String'",
    }
  ],
  ...
}

Workaround:

Running npx prisma introspect again helped me to write the types back as they were.
However, since they were re-added, I had to remove my knex migration tables manually.