Await in static field initializer

[Kingwl]

Bug Report

🔎 Search Terms

🕗 Version & Regression Information

• I was unable to test this on prior versions because _______

⏯ Playground Link

Playground

💻 Code

async function f () {
  class C {
    static a = await (Promise.resolve(1)) // error here
  }
  return C as any
}

f().then(c => {
  console.log(c.a) 
})

🙁 Actual behavior

ReferenceError: await is not defined when target below es2020

🙂 Expected behavior

No error at wait.
Output: 1

[Kingwl]

Related:

• No error on this expressions in static property declaration initialisers (ESNext+useDefineForClassFields) #36781
• Add support for class static block #43092
• Maybe Implement Static Private Class Elements #42986 too

[Kingwl]

/cc: @sandersn @rbuckton

[Kingwl]

Any suggestions? Happy to work on these too.

[Kingwl]

staticFieldDefinition[?Yield, ?Await]

from https://tc39.es/proposal-static-class-features/#prod-ClassElement

And

const initializer = doOutsideOfContext(NodeFlags.YieldContext | NodeFlags.AwaitContext | NodeFlags.DisallowInContext, parseInitializer);

In parsePropertyDeclaration.

[Kingwl]

Holy shit. I have confused about this.