add some packages

node_modules/babel-plugin-transform-minify-booleans/lib/index.js

@@ -0,0 +1,20 @@
+"use strict";
+
+module.exports = function ({
+  types: t
+}) {
+  const TRUE = t.unaryExpression("!", t.numericLiteral(0), true);
+  const FALSE = t.unaryExpression("!", t.numericLiteral(1), true);
+  return {
+    name: "transform-minify-booleans",
+    visitor: {
+      // shorten booleans to a negation
+      // true -> !0
+      // false -> !1
+      BooleanLiteral(path) {
+        path.replaceWith(path.node.value ? TRUE : FALSE);
+      }
+
+    }
+  };
+};