Property 'transaction' does not exist on type 'PrismaClient<PrismaClientOptions, never>'

Bug description

I followed the docs and added previewFeatures = ["transactionApi"] to the generator client block of the schema.prisma file. However I still receive this typescript compiler error that transaction does not exist.

When I try to execute prisma.transaction(...), I get a runtime error:

UnhandledPromiseRejectionWarning: Error: In order to use the .transaction() api, please enable 'experimentalFeatures = "transactionApi" in your schema.

This error seems to contradict what the docs say. So tried to add experimentalFeatures = "transactionApi" to the generator block instead but still have the same error.

How to reproduce

Add this to schema.prisma

generator client {
  provider             = "prisma-client-js"
  previewFeatures = ["transactionApi"]
  binaryTargets        = ["native"]
}

Run npm prisma generate

Observe error when using prisma.transcation

Expected behavior

Expected to not get an error.

Prisma information

prisma/cli@^2.1.1 prisma/client@^2.1.0

Environment & setup

• OS: Mac OS with Docker (Alpine Linux)
• Database: PostgreSQL
• Node.js version: v12.18.2
• Prisma version:

@prisma/cli          : 2.2.1
Current platform     : darwin
Query Engine         : query-engine 832e37683666c748b0a1cbdc2c5068b5e443e816 (at /Users/kevin/MediaHound/client/partners/node_modules/@prisma/cli/query-engine-darwin)
Migration Engine     : migration-engine-cli 832e37683666c748b0a1cbdc2c5068b5e443e816 (at /Users/kevin/MediaHound/client/partners/node_modules/@prisma/cli/migration-engine-darwin)
Introspection Engine : introspection-core 832e37683666c748b0a1cbdc2c5068b5e443e816 (at /Users/kevin/MediaHound/client/partners/node_modules/@prisma/cli/introspection-engine-darwin)
Format Binary        : prisma-fmt 832e37683666c748b0a1cbdc2c5068b5e443e816 (at /Users/kevin/MediaHound/client/partners/node_modules/@prisma/cli/prisma-fmt-darwin)