interface PluginInterface

interface PluginInterface {
    
    /**
     * Version number of the internal composer-plugin-api package
     *
     * This is used to denote the API version of Plugin specific
     * features, but is also bumped to a new major if Composer
     * includes a major break in internal APIs which are susceptible
     * to be used by plugins.
     *
     * @var string
     */
    public const PLUGIN_API_VERSION = '2.6.0';
    
    /**
     * Apply plugin modifications to Composer
     *
     * @return void
     */
    public function activate(Composer $composer, IOInterface $io);
    
    /**
     * Remove any hooks from Composer
     *
     * This will be called when a plugin is deactivated before being
     * uninstalled, but also before it gets upgraded to a new version
     * so the old one can be deactivated and the new one activated.
     *
     * @return void
     */
    public function deactivate(Composer $composer, IOInterface $io);
    
    /**
     * Prepare the plugin to be uninstalled
     *
     * This will be called after deactivate.
     *
     * @return void
     */
    public function uninstall(Composer $composer, IOInterface $io);

}