How can Composer scripts automate common development tasks, such as running tests or clearing a cache, directly as part of the Composer workflow?

Composer scripts let you define custom shell commands or PHP callbacks that run automatically at specific points in the Composer lifecycle, such as immediately after installing dependencies, or that can be triggered manually using a custom composer command, letting teams standardize common development tasks like running a test suite, clearing an application cache, or generating optimized autoloader files as simple, memorable Composer commands rather than requiring developers to remember a series of separate manual steps.

{
  "scripts": {
    "test": "phpunit",
    "post-install-cmd": ["php artisan config:cache"]
  }
}