🔎 Search Terms

Typescript Hangs, Memory Leak, VS Code, Prisma, React-Hook-Form,

🕗 Version & Regression Information

• This is a crash

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about hanging.

Tested on latest 5.2.2 and 5.3.0-dev-20231012. typescript@next

⏯ Playground Link

https://codesandbox.io/p/sandbox/musing-turing-78vp6j?file=%2Fapp%2Fpage.tsx%3A6%2C33

💻 Code

import { useForm } from "react-hook-form";
import { Prisma } from "@prisma/client";

export default function Home() {
  const form = useForm<Prisma.UserCreateInput>();
  ...

This will hang everything. Typescript won't tsc and intellisense will just sit with "loading" no matter what you hover.

meanwhile this works fine:

import { useForm } from "react-hook-form";
import { Prisma } from "@prisma/client";

export default function Home() {
  const form = useForm<>();
  ...

tsc --noEmit --extendedDiagnostics will complete in like 3 seconds with this.

🙁 Actual behavior

Typescript won't complete a tsc --noEmit and intellisense will just sit with "loading" no matter what you hover over. I have seen it once before just set everything to any

With the generated types in the first example - i let it run for 1 hour 59mins on a M1 mac and no output.

You can see the full code example with a minimal repro on the codesandbox link. It also hangs it's intellisense in CSB and won't tsc.
CPU also goes to 100% on both local and CSB

🙂 Expected behavior

Doesn't hang typescript, operates just like if you put any other type in there say

type SomeType = {name: string} 
const form = useForm<SomeType>() 

Additional information about the issue

Another report by someone else here:

https://stackoverflow.com/questions/76932600/high-cpu-usage-when-using-some-prisma-types-with-react-hook-form

It seems to be anything that comes off the Prisma.* types