Creating an interface that extends the Map object in TypeScript to maintain the order of keys

After learning that the normal object doesn't preserve key order in TypeScript, I was advised to use Map. Nevertheless, I'm struggling to figure out how to assign values once I've declared the interface. Take a look at my approach: Coding

Answer №1

To use the constructor above, you must first create a class because the signature of the Map constructor is different:

class MyMap extends Map<string, any> {  
    public coding: string;
    public 1: number;
    constructor(src: Partial<MyMap>){
      super();
      Object.assign(this, src);      
    }
}

const newMap: MyMap = new MyMap({
  coding:"2323",
  1:123
});

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