src/hooks/scriptsFinder.js
function getPluginsHookScripts (hook, opts) {
    // args check
    if (!hook) {
        throw new Error('hook type is not specified');
    }

    // In case before_plugin_install, after_plugin_install, before_plugin_uninstall hooks we receive opts.plugin and
    // retrieve scripts exclusive for this plugin.
    if (opts.plugin) {
        events.emit('verbose', 'Finding scripts for "' + hook + '" hook from plugin ' + opts.plugin.id + ' on ' + opts.plugin.platform + ' platform only.');
        // if plugin hook is not run for specific platform then use all available platforms
        return getPluginScriptFiles(opts.plugin, hook, opts.plugin.platform ? [opts.plugin.platform] : opts.cordova.platforms);
    }

    return getAllPluginsHookScriptFiles(hook, opts);
}
function getPluginsHookScripts (hook, opts) {
    // args check
    if (!hook) {
        throw new Error('hook type is not specified');
    }

    // In case before_plugin_install, after_plugin_install, before_plugin_uninstall hooks we receive opts.plugin and
    // retrieve scripts exclusive for this plugin.
    if (opts.plugin) {
        events.emit('verbose', 'Finding scripts for "' + hook + '" hook from plugin ' + opts.plugin.id + ' on ' + opts.plugin.platform + ' platform only.');
        // if plugin hook is not run for specific platform then use all available platforms
        return getPluginScriptFiles(opts.plugin, hook, opts.plugin.platform ? [opts.plugin.platform] : opts.cordova.platforms);
    }

    return getAllPluginsHookScriptFiles(hook, opts);
}
Returns script files defined by plugin developers as part of plugin.xml.