Multiple constructors in typescript

Question

How can I define multiple constructors in typescript? For example, I want to have the following code:

class Folder extends Asset {
 constructor(repositoryId: string, assetId: string) {
        super();
 }
 
 constructor (folder: Folder) {
 }
}

Is it possible to instantiate a class multiple ways in typescript?

Does this answer your question? [Constructor overload in TypeScript](https://stackoverflow.com/questions/12702548/constructor-overload-in-typescript) — Batajus, Dec 22 '21 at 14:39
You can have multiple overloads "on type" level, but only single implementation allowed. (It will need to be able to handle `string | Folder` as a first parameter) https://www.typescriptlang.org/play?#code/MYGwhgzhAEAa0G8BQ1rAPYDsIBcBOArsDungBRgBcmBAtgEYCmeAlCmlrocaRZVwEtMAczaoM2fERLkqgkdAA+0Gg2YtE7VAIBm0MjgCeAB0bo9YaAF4b0AOTzhdjclRuO2dCEYA6EOmEyACIAEXRoCHRaRhwACyFhaAB3ATiI-ASggBpoMDE3AF9oRhAIRk13cU4vX39A0PDI6LiE5NTYlTomPGzc-NQC9kGCoA — Aleksey L., Dec 22 '21 at 14:45

score 2 · Answer 1 · answered Dec 22 '21 at 14:41

You trt somenthing like this:

class Folder extends Asset {
  constructor(repositoryId: string, assetId: string);
  constructor(folder: Folder);
  constructor(repositoryId?: string, assetId?: string, folder?: Folder)
    if (!folder && repositoryId && assetId) super();
    else {
      // To stuff
    }
  }
}

Multiple constructors in typescript

1 Answers1