Getting started
Install Stryker using npm.
1 Prepare​
Make sure you have npm and nodejs installed. Open a terminal / command prompt and cd to the root of your project you want to mutation test.
cd my-project
2 Install​
The easiest way to get started with Stryker is by installing the stryker-cli globally. It is a small package which forwards commands to your local Stryker instance.
npm install -g stryker-cli
Optionally, you could also install Stryker directly yourself.
npm install --save-dev @stryker-mutator/core
If you choose to not install the stryker-cli, use npx stryker
(after installing @stryker-mutator/core
locally) instead of stryker
for the rest of the quickstart.
3 Configure​
Run this command to configure Stryker.
stryker init
If you're asked to install Stryker, choose Yes. Follow the questionnaire.
Please let us know if your option is missing here by opening an issue.
After the init is done, inspect the stryker.conf.js
file.
For more information on what these options mean, take a look at the Configuration docs page
4 Let's kill some mutants​
Run Stryker to mutation test your project
stryker run
Have troubles running Stryker? Try running with trace logging.
stryker run --logLevel trace
You can also have a look at the Configuration docs page for more information about the configuration.
Please report any issues you have or let us know via Slack.