update: about class properties

[tkgkn]

add a notice after class properties code example

[eps1lon]

Seems like we had a bit of a misunderstanding. The type error is actually correct since this.pointer isn't always defined. The correct type would be pointer?: number.

Disabling the option just silences potential errors about unsound types. Please adjust the type rather than supressing errors.

[tkgkn]

Aha, I will fix that. :)
Thank you for pointing out the crux of the matter !

[jsjoeio]

Suggested a few changes around wording to make it more clear

[jsjoeio]

Suggested change

Notice, if your TypeScript version before 2.7, you can declare property like `pointer: number`, but in 2.7 and later, you should declare it like `pointer?: number` or `pointer!: number`, because start with Typescript version 2.7, there is a new tsconfig option of **strictPropertyInitialization**, it will checks to esure each instance property of a class gets initialized, look at the [details](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-7.html). Search quickly with keywords: **Strict Class Initialization**

Notice, if your TypeScript version before 2.7, you can declare property like `pointer: number`, but in 2.7 and later, you should declare it like `pointer?: number` or `pointer!: number`, because starting with Typescript version 2.7, there is a new tsconfig option called **strictPropertyInitialization**, which will check to ensure each instance property of a class gets initialized. For more information, refer to the [release notes](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-7.html#strict-class-initialization).

[jsjoeio]

I fixed a few typos and changed the wording to make it more clear

[jsjoeio]

@c690554125 Let me know when this is ready for re-review

[swyxio]

closing as stale