What is the application of Grunt in JavaScript?

A Grunt is a tool that helps in managing a code by saving both cost and time. When programmers write a code for a project based on programming language, they have to apply functions again and again. Grant makes the coding easy and simple and in case the project is really big then this tool alone can reduce the time required for completion to a great extent. Since JavaScript is implemented for developing a lot of applications, users can easily use this tool while on it.