Kay•13mo ago

Dynamic interfaces

Is it possible to have like an interface that has a type entry and when it is a string for example the interface has a maxlength and minlength or when its a number it has a max and min?

4 Replies

NeTT•13mo ago

Why not use two separate interfaces

Kay•13mo ago

cous i have a function that accepts an entry wich can be multiple. but are all based on one. i saw this once where if you set the type to string you can set a default ut if you set the type to int you cans et a min and max so for example

interface {
  type: "string" | "number" | "somethingElse"
  name: string
  description: string
  min: number // This entry would only exist if type is number
  max: number // This entry would only exist if type is number
  default: string // This entry would only exist if type is string
}

interface {
  type: "string" | "number" | "somethingElse"
  name: string
  description: string
  min: number // This entry would only exist if type is number
  max: number // This entry would only exist if type is number
  default: string // This entry would only exist if type is string
}

SyrupThinker•13mo ago

Something like this?

type XyzBase = { name: string; description: string };
type Xyz =
  & XyzBase
  & (
    | { type: "string"; maxlength: number; minlength: number; default: string }
    | { type: "number"; min: number; max: number }
    | { type: "somethingElse" }
  );

type XyzBase = { name: string; description: string };
type Xyz =
  & XyzBase
  & (
    | { type: "string"; maxlength: number; minlength: number; default: string }
    | { type: "number"; min: number; max: number }
    | { type: "somethingElse" }
  );

Kay•13mo ago

yhea thx :)