fix is_number() on += (#1714)

fixes #1710
2017-03-28 17:08:16 +08:00
parent fb177a6312
commit f71f4905b0
2 changed files with 17 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1167,9 +1167,9 @@ merge(Compressor.prototype, {
                && this.left.is_number(compressor)
                && this.right.is_number(compressor);
        });
-        var assign = makePredicate("-= *= /= %= &= |= ^= <<= >>= >>>=");
        def(AST_Assign, function(compressor){
-            return assign(this.operator) || this.right.is_number(compressor);
+            return binary(this.operator.slice(0, -1))
+                || this.operator == "=" && this.right.is_number(compressor);
        });
        def(AST_Seq, function(compressor){
            return this.cdr.is_number(compressor);