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var npmi = require('npmi');
var DEFAULT_PLUGINS = require('../constants/defaultPlugins');
var Promise = require('../utils/promise');
var installPlugin = require('./installPlugin');
/**
Install plugin requirements for a book
@param {Book}
@return {Promise<Number>}
*/
function installPlugins(book) {
var logger = book.getLogger();
var config = book.getConfig();
var plugins = config.getPluginDependencies();
// Remove default plugins
// (only if version is same as installed)
plugins = plugins.filterNot(function(plugin) {
var dependency = DEFAULT_PLUGINS.find(function(dep) {
return dep.getName() === plugin.getName();
});
return (
// Disabled plugin
!plugin.isEnabled() ||
// Or default one installed in GitBook itself
(dependency &&
plugin.getVersion() === dependency.getVersion())
);
});
if (plugins.size == 0) {
logger.info.ln('nothing to install!');
return Promise();
}
logger.info.ln('installing', plugins.size, 'plugins using npm@' + npmi.NPM_VERSION);
return Promise.forEach(plugins, function(plugin) {
return installPlugin(book, plugin);
})
.thenResolve(plugins.size);
}
module.exports = installPlugins;
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