Lo-dash is a Node.js utility library (per method packages)

 Lodash makes JavaScript easier by taking the hassle out of working with arrays
 , numbers, objects, strings, etc. Lodash’s modular methods are great for:
  * Iterating arrays, objects, & strings
  * Manipulating & testing values
  * Creating composite functions
 .
 This package provides lodash methods exported as separate modules.
 .
 Node.js is an event-based server-side JavaScript engine.