this return type for static methods?

[uneven hornet]

Hi guys i have question about the this return type for static methods like

class A{
  static Open(): this;
}
class B extends A{
  a: number;
}

B.Open().a; //should be valid but something is wrong

[outer stag]

@uneven hornet Doesn't really exist

https://github.com/microsoft/TypeScript/issues/5863

There's a few workarounds in that thread though.

(I'm assuming you meant class B extends A in your example)

[uneven hornet]

ya

thx you anyway

Bruh its more like 6 years open and its not still improved / fixed

/resolve

!close

!open

@outer stag I am useing the JSDocs actually but is there way to redefine the types without creating the new method in that class? like virtual method

[outer stag]

TS doesn't prioritize changes based on how long the relative tickets have been open. (Really, nobody does)

[outer stag]

FWIW, using JSDoc shouldn't really affect things - I think basically all the features of TS are available through JSDoc notations nowadays.

[uneven hornet]

not sure if i describe it correctly here is example:

class A{
  /* @returns {A}*/
  static Open(){return new this();}
}
class B extends A{
  /**
  * @static
  * @method Open
  * @returns B
  */
}

is that possible to change the type like this without implementing it?

@outer stag sorry this is last question

[outer stag]

Don't think so, no.

[uneven hornet]

Thank you for everything

[outer stag]

Some of the workarounds in the linked issue may still work with JSDoc syntax though

[uneven hornet]

i going to look at that

thx