My usual implementation pattern of immutable merging in TypeScript.
class MyClass {
constructor(public id: string, public name: string) {}
clone() {
return new MyClass(this.id, this.name);
}
merge(another: Partial<MyClass>) {
return Object.assign(this.clone(), another);
}
}
const objA = new MyClass("1", "foo");
const objB = objA.merge({ name: "bar" });
console.log(objA !== objB);
console.log(objB.id === "1");
console.log(objB.name === "bar");
Partial<MyClass> allows us to pass an object matching MyClass partially.
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