Merge pull request #19 from shakacode/alex/node-legacy-babel-polyfill

Load babel polyfill only for legacy node

Author: alex35mil

examples/basic/package.json

@@ -43,7 +43,7 @@
     "babel-loader": "^6.1.0",
     "babel-preset-es2015": "^6.1.18",
     "body-parser": "^1.14.1",
-    "bootstrap-loader": "^1.0.0-rc",
+    "bootstrap-loader": "file:../../.",
     "css-loader": "^0.22.0",
     "eslint": "^1.9.0",
     "eslint-config-airbnb": "^1.0.0",

examples/css-modules/package.json

@@ -51,7 +51,7 @@
     "babel-preset-es2015": "^6.3.13",
     "babel-preset-react": "^6.3.13",
     "body-parser": "^1.14.1",
-    "bootstrap-loader": "^1.0.0-rc",
+    "bootstrap-loader": "file:../../.",
     "css-loader": "^0.23.0",
     "eslint": "^1.9.0",
     "eslint-config-airbnb": "^1.0.0",

src/bootstrap.loader.js

@@ -1,6 +1,28 @@
 /* eslint func-names: 0 */
 
-import 'babel-polyfill';
+import semver from 'semver';
+
+// For Node <= v0.12.x Babel polyfill is required
+if (semver.lt(process.version, '4.0.0')) {
+  const babelLatest = 'babel-polyfill';
+  const babelPrev = 'babel/polyfill';
+
+  const isBabelLatest = require.resolve(babelLatest);
+  const isBabelPrev = require.resolve(babelPrev);
+
+  if (!isBabelLatest && !isBabelPrev) {
+    throw new Error(`
+      For Node <= v0.12.x Babel polyfill is required.
+      Make sure it's installed in your 'node_modules/' directory.
+    `);
+  }
+
+  if (isBabelLatest) {
+    require(babelLatest);
+  } else {
+    require(babelPrev);
+  }
+}
 
 import path from 'path';
 import loaderUtils from 'loader-utils';