Parse default-exported parenthesized classes/functions correctly

Closes #379
acornjs · Feb 5, 2016 · 0453696 · 0453696
1 parent 4593dc8
commit 0453696
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Showing 2 changed files with 21 additions and 2 deletions.
diff --git a/src/statement.js b/src/statement.js
@@ -527,10 +527,11 @@ pp.parseExport = function(node) {
     return this.finishNode(node, "ExportAllDeclaration")
   }
   if (this.eat(tt._default)) { // export default ...
+    let parens = this.type == tt.parenL
     let expr = this.parseMaybeAssign()
     let needsSemi = true
-    if (expr.type == "FunctionExpression" ||
-        expr.type == "ClassExpression") {
+    if (!parens && (expr.type == "FunctionExpression" ||
+                    expr.type == "ClassExpression")) {
       needsSemi = false
       if (expr.id) {
         expr.type = expr.type == "FunctionExpression"

diff --git a/test/tests-harmony.js b/test/tests-harmony.js
@@ -4237,6 +4237,24 @@ test("export default class A {}", {
   }]
 }, {ecmaVersion: 6, sourceType: "module", ranges: true});
 
+test("export default (class{});", {
+  "type": "Program",
+  "body": [
+    {
+      "type": "ExportDefaultDeclaration",
+      "declaration": {
+        "type": "ClassExpression",
+        "id": null,
+        "superClass": null,
+        "body": {
+          "type": "ClassBody",
+          "body": []
+        }
+      }
+    }
+  ]
+}, {ecmaVersion: 6, sourceType: "module"})
+
 testFail("export *", "Unexpected token (1:8)", {ecmaVersion: 6, sourceType: "module"});
 
 test("export * from \"crypto\"", {