sortablejs
JavaScript library for reorderable drag-and-drop lists on modern browsers and touch devices. No jQuery required. Supports Meteor, AngularJS, React, Polymer, Vue, Knockout and any CSS library, e.g. Bootstrap.
clone-deep
Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.
ts-mixer
A very small TypeScript library that provides tolerable Mixin functionality.
inherits-ex
Enhanced inheritance for dynamic inheritance and mixin.