build cjs, esm, umd wiht rollup

Author: torinmb

.babelrc

@@ -0,0 +1,10 @@
+{
+  "presets": [
+    ["@babel/preset-env", {
+      "targets": {
+        "browsers": ["last 2 versions", "safari >= 7"]
+      },
+	  "modules": false
+    }]
+  ]
+}