fix parse and output of yield (#2690)

fixes #2689
2017-12-30 03:27:26 +08:00
parent 53600e9869
commit 725aac8b46
4 changed files with 111 additions and 88 deletions
--- a/lib/output.js
+++ b/lib/output.js
@@ -799,6 +799,10 @@ function OutputStream(options) {
        // a = yield 3
        if (p instanceof AST_Binary && p.operator !== "=")
            return true;
+        // (yield 1)()
+        // new (yield 1)()
+        if (p instanceof AST_Call && p.expression === this)
+            return true;
        // (yield 1) ? yield 2 : yield 3
        if (p instanceof AST_Conditional && p.condition === this)
            return true;