fix export default function expression disambiguation - fixes #2189

test/fixtures/harmony/modules/export-default-function-declaration-expression-disambiguation/actual.js

@@ -0,0 +1,2 @@
+export default function () {}
+(foo);

test/fixtures/harmony/modules/export-default-function-declaration-expression-disambiguation/expected.json

@@ -0,0 +1,115 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 36,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 2,
+      "column": 6
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 36,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 2,
+        "column": 6
+      }
+    },
+    "sourceType": "module",
+    "body": [
+      {
+        "type": "ExportDefaultDeclaration",
+        "start": 0,
+        "end": 29,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 1,
+            "column": 29
+          }
+        },
+        "declaration": {
+          "type": "FunctionExpression",
+          "start": 15,
+          "end": 29,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 15
+            },
+            "end": {
+              "line": 1,
+              "column": 29
+            }
+          },
+          "id": null,
+          "generator": false,
+          "expression": false,
+          "params": [],
+          "body": {
+            "type": "BlockStatement",
+            "start": 27,
+            "end": 29,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 27
+              },
+              "end": {
+                "line": 1,
+                "column": 29
+              }
+            },
+            "body": []
+          }
+        }
+      },
+      {
+        "type": "ExpressionStatement",
+        "start": 30,
+        "end": 36,
+        "loc": {
+          "start": {
+            "line": 2,
+            "column": 0
+          },
+          "end": {
+            "line": 2,
+            "column": 6
+          }
+        },
+        "expression": {
+          "type": "Identifier",
+          "start": 31,
+          "end": 34,
+          "loc": {
+            "start": {
+              "line": 2,
+              "column": 1
+            },
+            "end": {
+              "line": 2,
+              "column": 4
+            }
+          },
+          "name": "foo",
+          "parenthesizedExpression": true
+        }
+      }
+    ]
+  }
+}

test/fixtures/harmony/modules/export-default-function-expression/options.json

@@ -1,3 +0,0 @@
-{
-  "sourceType": "module"
-}