Typescript 4.7.3 bracketed class property compilation error strictPropertyInitialization:true

[BzenkoSergey]

Bug Report

🔎 Search Terms

strictPropertyInitialization bracketed class property

🕗 Version & Regression Information

Typescript 4.7.3, 4.7.2

⏯ Playground Link

Playground link with relevant code

💻 Code

enum A {
  A = 'A',
  B = 'B'
}

class B {
  [A.A]: string;

  constructor() {
    this[A.A] = '1';
    this.A = '1';
    this['A'] = '1';
  }
}

🙁 Actual behavior

Compilation error:
Error: Property '[A.A]' has no initializer and is not definitely assigned in the constructor.

🙂 Expected behavior

Seems it should be compiled without errors.

[jcalz]

Probably related to #45974 aka "Control-Flow Analysis for Bracketed Element Access". Could you please edit your post to fill out the bug report template to help the TS team?

[BzenkoSergey]

Ryan Cavanaugh (@RyanCavanaugh) still not working

https://www.typescriptlang.org/play?ts=4.8.4#code/KYOwrgtgBAglDeBYAUFWUC8UDkNsBoU0AhTHY7FAXxRQGMAbAQwGcWpSlUoBtGAOhgBdAFxQWAFwBOASxABzANy1udAPYhJUsHQlqpACgCUCImigSAFjJZ9BQstgCM2ZdzRWbgxy7fmL1ra42A5Yzq5mNMhUQA

[RyanCavanaugh]

It works in nightly. You have the Playground set to a build that was produced before the PR was merged.