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Mutode

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Concurrency
The concurrency option controls mutant runners and defaults to 4.thesoftwaredesignlab.github.io · read 9 Oct 2026
Configuration
Users can select mutation operators and set concurrency; the command-line documentation gives a default concurrency of 4.thesoftwaredesignlab.github.io · read 4 Oct 2026
How it works
It makes small code changes called mutants and runs the test suite; failing tests kill a mutant, while passing tests mean it survived.thesoftwaredesignlab.github.io · read 9 Oct 2026
Install
The page documents global npm installation, local development dependency installation, npx usage, and package.json scripts.thesoftwaredesignlab.github.io · read 4 Oct 2026
Installation
The page documents installing Mutode globally with npm or locally as a development dependency.thesoftwaredesignlab.github.io · read 9 Oct 2026
Integrations
The documentation describes npm installation and execution but does not list third-party service integrations.thesoftwaredesignlab.github.io · read 4 Oct 2026
Intended users
Mutode is a mutation testing tool for JavaScript and Node.js projects.thesoftwaredesignlab.github.io · read 4 Oct 2026
License
The page identifies the license as MIT and names Diego Rodríguez Baquero in its copyright notice.thesoftwaredesignlab.github.io · read 9 Oct 2026
Logs
Mutode saves logs in a .mutode folder in the project.thesoftwaredesignlab.github.io · read 4 Oct 2026
Mutation operators
Documented operators include changing literals and conditionals, altering math operators, and removing code elements such as array elements, function arguments, lines, and switch cases.thesoftwaredesignlab.github.io · read 9 Oct 2026
Operator selection
Users can select mutation operators with the --mutators option.thesoftwaredesignlab.github.io · read 9 Oct 2026
Parallel execution
Mutode creates project copies for concurrent mutant runners and supports configuring the number of runners.thesoftwaredesignlab.github.io · read 4 Oct 2026
Purpose
Mutode performs mutation testing for Node.js and JavaScript.thesoftwaredesignlab.github.io · read 9 Oct 2026
Results
Mutode reports killed, survived, and discarded mutants and calculates mutant coverage.thesoftwaredesignlab.github.io · read 4 Oct 2026
Runtime requirement
Mutode requires Node 8 or later.thesoftwaredesignlab.github.io · read 9 Oct 2026
Security and compliance
The opened product pages do not state security certifications or compliance claims.thesoftwaredesignlab.github.io · read 4 Oct 2026
Test requirement
Mutode runs the project’s npm test command before proceeding and reports an error if the clean test suite exits with a nonzero code.thesoftwaredesignlab.github.io · read 4 Oct 2026
Ways to run
The page documents running Mutode directly, with npx, or through a package.json script.thesoftwaredesignlab.github.io · read 9 Oct 2026

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