A modern JavaScript utility library that delivers modularity, performance, extras, and more. Lodash is available under the MIT License and supports modern environments. Lodash simplifies JavaScript by taking the pain out of working with arrays and numbers, objects, strings and other complex data. Lodash's modular method is great for manipulating and testing variables, creating composite functions, and iterating arrays, strings, objects, and strings. Lodash comes in many different formats and builds. futil-js is an assortment of utility programs that are designed to complement Lodash. This utility was tested in Chrome 74-75 and Firefox 66-67. It also works with IE 11, Edge 18, Safari 11-12 and Node.js 8-12. To maintain an array's sort order, determine the index at which the value should be placed in it. You can chain together methods that operate on and return collections, arrays, and functions. Methods that retrieve or return a single value will automatically end the chain.