#extend

Make a shallow clone of an object, array or primitive.

Modify the values of an object

Utils for working with JavaScript classes and prototype methods.

Answers the question: "can this value have keys?". Returns true if a value is any of the object types: array, regexp, plain object, function or date. Useful for determining if a value is an object that can be extended.

Adds a static `extend` method to a class, to simplify inheritance. Extends the static properties, prototype properties, and descriptors from a `Parent` constructor onto `Child` constructors.

Extend object A with the properties of object B. node.js/javascript util.

A tiny (240B to 501B) and fast utility to "deep clone" Objects, Arrays, Dates, RegExps, and more!

Utilities for maplibre-gl-js to improve flat single-copy maps and non-maps like high-resolution image tilesets

Returns an array of unique values using strict equality for comparisons, maintaining the same order as the provided arrays.

Assign the enumerable es6 Symbol properties from an object (or objects) to the first object passed on the arguments. Can be used as a supplement to other extend, assign or merge methods as a polyfill for the Symbols part of the es6 `Object.assign` method.

A library for deep (recursive) merging of Javascript objects

Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives. Used by superstruct, merge-deep, and many others!

Recursive extend module

Make your own error types!