chore: apply babel on publish

Author: JLHwung

.babelrc

@@ -1,13 +1,17 @@
 {
-  "presets": [
-    [
-      "env",
-      {
-        "targets": {
-          "node": "0.12"
-        }
-      }
-    ],
-    "flow"
-  ]
-}
+  "env": {
+    "production": {
+      "presets": [
+        [
+          "env",
+          {
+            "targets": {
+              "node": "0.12"
+            }
+          }
+        ],
+        "flow"
+      ]
+    }
+  }
+}

scripts/build.js

@@ -48,7 +48,7 @@ shell.ln('-s', '../../scripts/git-pre-push', '.git/hooks/pre-push');
 console.info(colors.bold('[3/3] Transpiling JS code...\n'));
 
 shell.exec(
-  `"node_modules/.bin/babel" ${process.argv[2] ||
+  `NODE_ENV=production "node_modules/.bin/babel" ${process.argv[2] ||
     ''} src/ --out-dir dist/ --ignore __tests__`
 );