typescript return copy of an object

Question

is this the correct way to return a copy of an object?

 class ObjectWrapper { private _ obj; /*** * Copy object of argument to this._ obj */ constructor (_obj: Object) { this._obj = _obj; } /** Return copy of * this._ obj (Return copy this._ obj) * @return Object */ get obj () { return this._obj; } 

I really was wondering what it means "returning a copy"

Answer 1

No, you are returning the original object. You have several options to copy an object in JS.

Traditional way through Object.assign() :

const target = { a: 1, b: 2 };
const source = { b: 4, c: 5 };

const returnedTarget = Object.assign(target, source);

The Object.assign() method only copies enumerable and own properties from a source object to a target object.

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ESNext approach with spread operator:

const source = { a: 1, b: 2 };
const target = {...source};

The Rest/Spread Properties for ECMAScript proposal (stage 4) adds spread properties to object literals. It copies own enumerable properties from a provided object onto a new object.

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