fix(core): find plugins from config only and with simpler args

packages/core/src/lib/plugin_manager.js

@@ -1,8 +1,7 @@
 'use strict';
 
-const plugin_manager = function() {
+const plugin_manager = function () {
   const path = require('path');
-  const findModules = require('./findModules');
   const logger = require('./log');
 
   const pluginMatcher = /^plugin-(.*)$/;
@@ -38,20 +37,18 @@ const plugin_manager = function() {
    * @param {object} patternlab
    */
   function initializePlugins(patternlab) {
-    const nodeModulesPath = path.join(process.cwd(), 'node_modules');
-    const foundPlugins = findModules(nodeModulesPath, isPlugin);
+    const foundPlugins = Object.keys(patternlab.config.plugins || {})
     foundPlugins.forEach(plugin => {
-      logger.info(`Found plugin: plugin-${plugin.name}`);
+      logger.info(`Found plugin: ${plugin}`);
       logger.info(`Attempting to load and initialize plugin.`);
-      const pluginModule = loadPlugin(plugin.modulePath);
+      const pluginModule = loadPlugin(path.join(process.cwd(), 'node_modules', plugin));
       pluginModule(patternlab);
     });
   }
 
-  async function raiseEvent(patternlab, eventName, ...args) {
+  async function raiseEvent(patternlab, eventName, args) {
     patternlab.events.emit(eventName, args);
-
-    await (async function() {
+    await (async function () {
       const hookHandlers = (patternlab.hooks[eventName] || []).map(h =>
         h(args)
       );