Added local plugin resolution.

Improved logic in findPackagePath method.
Added test.

Author: neogeek

lib/loaders.js

@@ -4,6 +4,7 @@ const fs = require('fs');
 const path = require('path');
 
 const HANDLEBARS_REGEX = /\.(hbs|handlebars)$/;
+const JAVASCRIPT_REGEX = /\.(js)$/;
 
 const NODE_MODULE_DIRECTORIES = [
     path.join(__dirname, '../node_modules'),
@@ -28,13 +29,7 @@ const findPackagePath = pkg =>
 
         fs.stat(path, (err, stats) => {
 
-            if (err) {
-
-                return resolve(null);
-
-            }
-
-            if (stats.isDirectory()) {
+            if (!err && stats.isDirectory()) {
 
                 return resolve(path);
 
@@ -80,6 +75,7 @@ const loadParser = config => new Promise((resolve, reject) => {
  *
  *     loadPlugin({'layout': 'markdown'}).then(plugin => {});
  *     loadPlugin({'layout': 'templates/README.hbs'}).then(plugin => {});
+ *     loadPlugin({'layout': 'plugin.js'}).then(plugin => {});
  *
  * @param {Object} config Configuration object.
  * @param {String} config.layout String representing the layout plugin to be loaded.
@@ -111,6 +107,10 @@ const loadPlugin = config => new Promise((resolve, reject) => {
 
             resolve(require('doxdox-plugin-handlebars'));
 
+        } else if (stats && stats.isFile() && config.layout.match(JAVASCRIPT_REGEX)) {
+
+            resolve(require(`${process.cwd()}/${config.layout}`));
+
         } else {
 
             reject('Invalid layout specified.');

test/fixtures/plugin.js

@@ -0,0 +1,33 @@
+const fs = require('fs');
+const path = require('path');
+
+const Handlebars = require('handlebars');
+
+/**
+ * Test plugin for doxdox.
+ *
+ * @example parseInputs(inputs, {'parser': 'dox', 'layout': 'plugins.js'}).then(content => console.log(content));
+ * @param {Array} data Methods parsed using a doxdox parser.
+ * @return {Promise} Promise with generated content.
+ * @public
+ */
+
+const plugin = data => new Promise((resolve, reject) => {
+
+    fs.readFile(path.join(__dirname, 'template.hbs'), 'utf8', (err, contents) => {
+
+        if (err) {
+
+            return reject(err);
+
+        }
+
+        const template = Handlebars.compile(contents);
+
+        return resolve(template(data));
+
+    });
+
+});
+
+module.exports = plugin;

test/specs/loaders.js

@@ -77,6 +77,9 @@ describe('loaders', () => {
 
             }));
 
+        it('load custom plugin via JavaScript file', () =>
+            loaders.loadPlugin({'layout': './test/fixtures/plugin.js'}));
+
     });
 
 });