Install babel-plugin-external-helpers to suppress rollup warnings

ryami333 · ryami333 · commit 6f9f2c324a6f · 2018-04-12T21:06:08.000+12:00
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -91,6 +91,7 @@
     "babel-cli": "^6.26.0",
     "babel-eslint": "^8.2.2",
     "babel-loader": "^7.1.2",
+    "babel-plugin-external-helpers": "^6.22.0",
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-react": "^6.24.1",
     "babel-preset-stage-2": "^6.24.1",
diff --git a/rollup.config.js b/rollup.config.js
@@ -21,7 +21,10 @@ export default [
                 browser: true,
             }),
             eslint(),
-            babel(),
+            babel({
+                plugins: ['external-helpers'],
+                externalHelpers: true,
+            }),
             commonjs(),
             replace({
                 exclude: 'node_modules/**',
