deepmerge
popularA library for deep (recursive) merging of Javascript objects
Updated by @tehshrike
extend-shallow
Extend an object with the properties of additional objects. node.js/javascript util.
Updated by @phated
clone-deep
Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.
Updated by @doowb
copy-anything
An optimised way to copy'ing an object. A small and simple integration
Updated by @mesqueeb
fs-capacitor
Filesystem-buffered, passthrough stream that buffers indefinitely rather than propagate backpressure from downstream consumers.
Updated by @mike-marcacci