If I have multi-group character mode to create responsible objects, I want to define multi-group dynamic keys

[yuntian001]

🔍 Search Terms

multi-group dynamic keys

✅ Viability Checklist

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, new syntax sugar for JS, etc.)
• This isn't a request to add a new utility type: https://github.com/microsoft/TypeScript/wiki/No-New-Utility-Types
• This feature would agree with the rest of our Design Goals: https://github.com/Microsoft/TypeScript/wiki/TypeScript-Design-Goals

⭐ Suggestion

If I have multi-group character mode to create responsible objects, I want to define multi-group dynamic keys

example

type Test<SingularAssociationName extends string,   PluralAssociationName extends string>{
[`get${SingularAssociationName }`]:()=>number;
[`set${SingularAssociationName }`]:(a:number)=>void;
[`get${PluralAssociationName }`]:()=>Array<number>;
[`set${PluralAssociationName }`]:(a:Array<number>)=>void;
}

OR

type Test<SingularAssociationName extends string,   PluralAssociationName extends string>{
[Key1 in `get${SingularAssociationName }`]:()=>number;
[Key2 in `set${SingularAssociationName }`]:(a:number)=>void;
[Key3 in `get${PluralAssociationName }`]:()=>Array<number>;
[Key4 in `set${PluralAssociationName }`]:(a:Array<number>)=>void;
}

📃 Motivating Example

If I have multi-group character mode to create responsible objects, I want to define multi-group dynamic keys

example

type Test<SingularAssociationName extends string,   PluralAssociationName extends string>{
[`get${SingularAssociationName }`]:()=>number;
[`set${SingularAssociationName }`]:(a:number)=>void;
[`get${PluralAssociationName }`]:()=>Array<number>;
[`set${PluralAssociationName }`]:(a:Array<number>)=>void;
}

OR

type Test<SingularAssociationName extends string,   PluralAssociationName extends string>{
[Key1 in `get${SingularAssociationName }`]:()=>number;
[Key2 in `set${SingularAssociationName }`]:(a:number)=>void;
[Key3 in `get${PluralAssociationName }`]:()=>Array<number>;
[Key4 in `set${PluralAssociationName }`]:(a:Array<number>)=>void;
}

💻 Use Cases

1. What do you want to use this for?
2. What shortcomings exist with current approaches?
3. What workarounds are you using in the meantime?

[MartinJohns]

You forgot to fill out the issue template.

You can do this already:

type Test<S extends string, P extends string> =
    { [K in `get${S}`]: () => number } &
    { [K in `set${S}`]: (a: number) => number } &
    { [K in `get${P}`]: () => number[] } &
    { [K in `set${P}`]: (a: number[]) => void }

[yuntian001]

You forgot to fill out the issue template.

You can do this already:

type Test<S extends string, P extends string> =
{ [K in get${S}]: () => number } &
{ [K in set${S}]: (a: number) => number } &
{ [K in get${P}]: () => number[] } &
{ [K in set${P}]: (a: number[]) => void }

Thank you very much. I can achieve my requirements in this way. I now want to dynamically declare these attributes to class. Is there any way to achieve this?
For example, I want to achieve

class Admin extends Model {
  declare getMenuIds()=>number;
  declare setMenuId:(a:number)=>number
  declare getMenuIds:()=>number[]
  declare setMenuIds:(a:number[])=>number[]
}

Use the following method to report errors.

class Admin extends Model {
declare  [K in keyof Test<'menuId','menuIds'>]:Test<'menuId','menuIds'>[K]
}