Add production dependencies

node_modules/gulp-if/index.js

@@ -0,0 +1,23 @@
+'use strict';
+
+var match = require('gulp-match');
+var ternaryStream = require('ternary-stream');
+var through2 = require('through2');
+
+module.exports = function (condition, trueChild, falseChild, minimatchOptions) {
+	if (!trueChild) {
+		throw new Error('gulp-if: child action is required');
+	}
+
+	if (typeof condition === 'boolean') {
+		// no need to evaluate the condition for each file
+		// other benefit is it never loads the other stream
+		return condition ? trueChild : (falseChild || through2.obj());
+	}
+
+	function classifier (file) {
+		return !!match(file, condition, minimatchOptions);
+	}
+
+	return ternaryStream(classifier, trueChild, falseChild);
+};