remove allowImportExportEverywhere

CHANGELOG.md

@@ -11,6 +11,11 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 3.0.0
+
+ * **Breaking Change**
+  * `allowImportExportEverywhere` acorn option has been disabled for spec compliancy so imports and exports can **only** be present at the top level.
+
 ## 2.10.1
 
  * **Internal**

lib/6to5/util.js

@@ -216,15 +216,14 @@ exports.parse = function (opts, code, callback) {
     var tokens   = [];
 
     var ast = acorn.parse(code, {
-      allowImportExportEverywhere: true,
-      allowReturnOutsideFunction:  true,
-      ecmaVersion:                 opts.experimental ? 7 : 6,
-      playground:                  opts.playground,
-      strictMode:                  true,
-      onComment:                   comments,
-      locations:                   true,
-      onToken:                     tokens,
-      ranges:                      true
+      allowReturnOutsideFunction: true,
+      ecmaVersion:                opts.experimental ? 7 : 6,
+      playground:                 opts.playground,
+      strictMode:                 true,
+      onComment:                  comments,
+      locations:                  true,
+      onToken:                    tokens,
+      ranges:                     true
     });
 
     estraverse.attachComments(ast, comments, tokens);