ES6 generator: do not allow yield* without argument.

Refs jquery#1033 Closes jquery#1178
jasonLaster · Jun 16, 2015 · a7379ac · a7379ac
1 parent a339e8c
commit a7379ac
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Showing 3 changed files with 6 additions and 3 deletions.
diff --git a/esprima.js b/esprima.js
@@ -3683,10 +3683,11 @@
             delegate = match('*');
             if (delegate) {
                 lex();
-            }
-
-            if (!match(';') && !match('}') && lookahead.type !== Token.EOF) {
                 argument = parseExpression();
+            } else {
+                if (!match(';') && !match('}') && lookahead.type !== Token.EOF) {
+                    argument = parseExpression();
+                }
             }
         }
 

diff --git a/test/fixtures/ES6/generator/invalid-yield-delegate.failure.json b/test/fixtures/ES6/generator/invalid-yield-delegate.failure.json
@@ -0,0 +1 @@
+{"index":22,"lineNumber":1,"column":23,"message":"Error: Line 1: Unexpected token }","description":"Unexpected token }"}
diff --git a/test/fixtures/ES6/generator/invalid-yield-delegate.js b/test/fixtures/ES6/generator/invalid-yield-delegate.js
@@ -0,0 +1 @@
+(function*() { yield* })
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		{"index":22,"lineNumber":1,"column":23,"message":"Error: Line 1: Unexpected token }","description":"Unexpected token }"}