propertiesIn

propertiesIn is a JavaScript library designed to simplify the process of working with object properties. It provides a collection of utility functions that offer more robust and flexible ways to access, manipulate, and validate properties within JavaScript objects. The library aims to address common challenges such as dealing with nested properties, handling potential `undefined` or `null` values, and performing checks on property types.

One of the core features of propertiesIn is its ability to safely access deeply nested properties without the need for explicit null or undefined checks at each level. This is often referred to as "safe navigation" or "optional chaining." For example, instead of writing `object.level1.level2.property`, which could throw an error if `object` or `level1` is null or undefined, propertiesIn offers a method to traverse such paths gracefully, returning a default value or `undefined` if any part of the path is missing.

The library also includes functions for setting properties, including nested ones, and for validating the existence and type of properties. These utilities can be particularly useful in scenarios involving data validation, configuration management, and complex data structures. By abstracting away the boilerplate code associated with property access and manipulation, propertiesIn helps developers write cleaner, more readable, and less error-prone JavaScript code. It is typically used in front-end and back-end JavaScript development where objects are frequently manipulated.