Object.assign() In Zustand's SetState Method
Object.assign() copies enumerable own properties from source objects to a target object. In Zustand's vanilla.ts, it updates the state object when setting a new state.
In this article, we will understand how Object.assign() is used in Zustand’s source code.
The above code snippet is from vanilla.ts, when you set a state, Object.assign is used to update your state object.
Let’s first understand the basics of Object.assign:
Object.assign()
The Object.assign() static method copies all enumerable own properties from one or more source objects to a target object. It returns the modified target object.
const target = { a: 1, b: 2 };
const source = { b: 4, c: 5 };
const returnedTarget = Object.assign(target, source);
console.log(target);
// Expected ou...