How to use Grunt: setup, Gruntfile tasks and common questions

What Grunt does and who it is for

Grunt lets you describe repeated jobs in your project and trigger them with one command instead of running each step by hand. Typical jobs named in the project's description include building, testing, and preparing files.

Grunt is a good fit for JavaScript developers who want to script project tasks, for teams maintaining older projects that already use it, and for developers who want a simple, configuration-driven runner.

• Best for: JavaScript developers scripting repeated project tasks
• Best for: teams maintaining existing Grunt projects
• Not for: people who need a no-code tool, since Grunt is configured with JavaScript

Install Grunt: prerequisites and getting the source

Grunt's listed prerequisite is Node.js. Install Node.js first, then get Grunt's source code. The README gives this command to clone the repository:

The install method for this project is listed as a package manager, so the README's clone command is one way to get the code; the README itself does not walk through package-manager installation steps.

• Prerequisite: Node.js
• Clone the repository from the official source on GitHub

Choose a supported Grunt version

The README states that the latest version receives security and bug fixes, and previous versions are end-of-life. According to its version table, the currently supported line is 1.6. Versions 1.5 and below, and 0.4, are marked as not supported.

If you maintain an older project, the README says a third party, HeroDevs, offers drop-in replacements for older Grunt versions that are kept up to date for security and compliance issues. Plan for this before you upgrade, because older versions will not get fixes from the core project.

• 1.6: supported
• 1.5 and below, and 0.4: not supported by the core project
• Commercial support for older versions is offered by a third party

Configure and run tasks

Grunt is configuration-driven, so you define tasks in JavaScript rather than through a graphical interface. The README provided for this page does not list specific task names, configuration keys, or run commands, so check the project website at gruntjs.com for the documentation on defining and running tasks.

When you read the docs, look for how tasks are declared, how they are run from the command line, and how plugins extend what Grunt can do.

• Write task configuration in JavaScript
• Read the documentation at gruntjs.com for task syntax and commands

Compare Grunt with similar tools

Projects often compared with Grunt include Gulp, npm scripts, and webpack. Grunt is configuration-driven; Gulp is another JavaScript task tool, and npm scripts are commands kept in a project's package configuration. webpack is focused on bundling modules rather than general task running.

The source provided here does not include benchmarks or a feature-by-feature comparison, so choose based on your project's needs and the documentation of each tool.

• Gulp: another JavaScript task runner
• npm scripts: commands defined alongside your project
• webpack: module bundler

Check licensing and contribute

Grunt is released under the MIT licence. The README asks people to read the Contributing guide at gruntjs.com before opening an issue, and points to CHANGELOG.md for release history.

• Licence: MIT
• Before filing an issue, read the Contributing guide
• Release history: CHANGELOG.md in the repository