Use Object.assign() to Clone Objects

Problem

Assigning objects creates references, causing accidental mutations.

Solution

Use Object.assign({}, obj) or spread {...obj} to create shallow copies.

Benefit

Prevents mutation bugs and allows safe object manipulation.

Code Example

const original = {name: 'John', age: 30};

// Clone object
const copy1 = Object.assign({}, original);
const copy2 = {...original};

// Merge objects
const merged = {...obj1, ...obj2};