Field names starting with underline is not supported

According to the data modeling documentation data model field names can start with underline ([A-Za-z_][A-Za-z0-9_]*) but both prisma2 and prisma vscode extension throw error.
The underlined fields are very helpful when you need cross compatibility with MongoDB (e.g. _id)

[mavilein]

@HosseinAgha : As a workaround for now i would provide a custom underlying name for the field like this: id String @map("_id")

[doronrk]

Hello @janpio, thanks for sharing the context on this. Perhaps it is just @dabrowne and my team, but this is definitely painful for our incremental adoption of Prisma. I’m surprised to hear that more people haven’t been impacted by this. My intuition is that most large applications using typescript & mongo would have tons of instances of ._id throughout. Co-mingling id and _id makes the migration to Prisma much more error prone.

I wonder whether this will become a more frequent issue as using Prisma with mongo becomes more popular.