QC is a tool that performs quality control checks on a Javascript repository. It makes sure that:

• All tests are passing (by calling npm test)
• All code is lint-free (using Trussle's ESLint rules)
• Code coverage is sufficient (using Istanbul)

If any of these checks don't pass, QC won't let you push your changes. Mean, I know - but it's the only way you'll learn.

QC should be installed as a dependency in your project:

npm install --save-dev @trussle/qc

If you're using mocha, you'll need to change from using mocha to using _mocha; this avoids forking the process, which causes some issues with code coverage.

On installation, QC will do a few things:

• If there is no .eslintrc.js file, one is added to the root of the project.
• If there is no .istanbul.yml file, one is added to the root of your project.
• It will set up a Git pre-push hook that runs itself when pushing code, to make sure you're behaving 😘

If you want to run QC yourself, just run ./node_modules/.bin/qc or set up the following script in your package.json:

{
    "scripts": {
        "qc": "qc"
    }
}

Please read this section very carefully: if any of these assumptions are not true about your project, QC will fail.

QC assumes the following about your package:

• There is a test script in your package.json which points to an executable in the ./node_modules/.bin directory (not global; usually _mocha).