Slow prisma generate

[Baptiste Manson]

Describe the Bug
With one model, I get
✔ Generated Prisma Client (4.15.0 | library) to .\node_modules@prisma\client in 53ms
✔ Generated TypeGraphQL integration to .\node_modules@generated\type-graphql in 69.38s

When testing with a larger schema (19 models) it takes 90-100s.

To Reproduce

generator client {
  provider = "prisma-client-js"
}

generator typegraphql {
  provider = "typegraphql-prisma"
}

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

model App {
  id String @id @default(uuid())
}

Expected Behavior
We would expect to be just a few seconds.

Environment (please complete the following information):

• OS: Windows 11 (AMD Ryzen 9 3900X 12-Core Processor 3.80 GHz)
• Node v20.3.1
• typegraphql-prisma version 0.26
• Prisma version 4.16
• TypeScript version 5.0.3

We were also able to reproduce this issue with a macOS M1 environment.

{
  "extends": "ts-node/node16/tsconfig.json",
  "compilerOptions": {
    "target": "es2018",
    "lib": [
      "es2018",
      "esnext.asynciterable"
    ],
    "module": "commonjs",
    "outDir": "./dist",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  }
}

Have a great day! Tell me how I can help beyond funding (because broke for now)

[Baptiste Manson]

Some progress; a custom folder outside out of the node_modules brings the performance to some acceptable performance.
✔ Generated TypeGraphQL integration to .\src\server\middlewares\graphql in 574ms
for the large model
✔ Generated TypeGraphQL integration to .\src\server\middlewares\graphql in 6.15s

[Michał Lytek]

On my machine with such schema:
https://github.com/MichalLytek/typegraphql-prisma/blob/main/experiments/postgres/prisma/schema.prisma

✔ Generated Prisma Client (4.15.0 | library) to ./prisma/generated/client in 83ms

✔ Generated TypeGraphQL integration to ./prisma/generated/type-graphql in 2.43s

[Michał Lytek]

https://github.com/MichalLytek/typegraphql-prisma/blob/main/experiments/postgres/prisma/schema.prisma

As stated in the docs, emitting to node_modules does transpilation of the generated TS code on the fly, that's why it's so slow.

[Baptiste Manson]

Im glad we got a chance to find the solution and document it for future users.
As I use tsx now, I forgot transpilation with ts-node was so slow! Thanks for trying to run it too Michal, I appreciate.

I will close the bug.