detect boolean context across IIFEs (#3461)

2019-10-10 09:37:02 +08:00
parent b18f717b46
commit 33c94d3bd9
2 changed files with 39 additions and 0 deletions
--- a/lib/ast.js
+++ b/lib/ast.js
@@ -979,6 +979,14 @@ TreeWalker.prototype = {
                || p instanceof AST_Conditional
                || p.tail_node() === self) {
                self = p;
+            } else if (p instanceof AST_Return) {
+                var fn;
+                do {
+                    fn = this.parent(++i);
+                    if (!fn) return false;
+                } while (!(fn instanceof AST_Lambda));
+                self = this.parent(++i);
+                if (!self || self.TYPE != "Call" || self.expression !== fn) return false;
            } else {
                return false;
            }