Review:
`object.assign` (native Javascript Method For Shallow Copying And Merging)
overall review score: 4.2
⭐⭐⭐⭐⭐
score is between 0 and 5
Object.assign is a native JavaScript method introduced in ECMAScript 2015 (ES6) that allows developers to perform shallow copying of objects and to merge multiple source objects into a target object. It creates a new object by copying enumerable own properties from one or more source objects, enabling straightforward object composition and modification.
Key Features
- Performs shallow copy of source object properties
- Merges multiple objects into a single target object
- Modifies and returns the target object
- Supports symbol properties in sources
- Lightweight, built-in method with high performance for small to medium datasets
Pros
- Simple and easy to use for copying and merging objects
- Native support in JavaScript, no external dependencies required
- Efficient for shallow copy operations
- Flexible with multiple source objects
- Supports property descriptors like symbols
Cons
- Performs only shallow copy; nested objects are copied by reference, not duplicated
- Does not handle deep cloning, limiting its use for complex nested data structures
- Overwrites existing properties without warning, potentially causing unintended data loss
- Cannot copy non-enumerable or inherited properties