change

.babelrc

@@ -1,3 +1,9 @@
 {
-  "presets": ["es2015"]
-}
+  "presets": [
+    ["@babel/preset-env", {
+      "targets": {
+         "browsers": ["Chrome >= 49", "Safari >= 10", "IE >= 11"]
+      }
+    }]
+  ]
+}

.gitignore

@@ -1,9 +1,16 @@
-preview
-build
 node_modules
-.DS_Store
+coverage/
+*.log
 npm-debug.log
-logs
-*.zip
+.logs/
+logs/
+*.swp
+run/
+*-run/
+.idea/
+.DS_Store
+assembly
+.nodejs-cache
+build
 release
-
+preview

copy.js

@@ -0,0 +1,6 @@
+const path = require('path');
+const fse = require('fs-extra');
+module.exports = function (cb) {
+	// fse.copySync(path.resolve(__dirname, 'src/xxx/'), path.resolve(__dirname, 'build/xxx/'));
+	cb && cb();
+}