Improve addPlugin to not append default plugins to the list

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/modifiers/config/isDefaultPlugin.js b/lib/modifiers/config/isDefaultPlugin.js
new file mode 100644
index 0000000..e68874a
--- /dev/null
+++ b/lib/modifiers/config/isDefaultPlugin.js
@@ -0,0 +1,15 @@
+var DEFAULT_PLUGINS = require('../../constants/defaultPlugins');
+
+/**
+ * Test if a plugin is a default one
+ * @param {String} plugin
+ * @param {String} version
+ * @return {Boolean}
+ */
+function isDefaultPlugin(pluginName, version) {
+    return !!DEFAULT_PLUGINS.find(function(dep) {
+        return dep.getName() === pluginName && (!version || dep.getVersion() === version);
+    });
+}
+
+module.exports = isDefaultPlugin;