Conditions including strict mode would make `delete` return `true` or `false`, and are too complex to be evaluated by the compressor.
Suppress assignment folding into said operator.
fixes #1685
continue;
}
}
- var case_side_effects = branch instanceof AST_Case && branch.expression.has_side_effects(compressor);
if (aborts(branch)) {
var block = make_node(AST_BlockStatement, branch, branch).print_to_string();
if (!fallthrough && prev_block === block) body[body.length - 1].body = [];
field = "left";
}
} else if (cdr instanceof AST_Call
- || cdr instanceof AST_Unary && cdr.operator != "++" && cdr.operator != "--") {
+ || cdr instanceof AST_Unary
+ && cdr.operator != "delete"
+ && cdr.operator != "++"
+ && cdr.operator != "--") {
field = "expression";
} else break;
parent = cdr;
}
}
}
+
+issue_1685: {
+ options = {
+ cascade: true,
+ side_effects: true,
+ }
+ input: {
+ var a = 100, b = 10;
+ function f() {
+ var a = (a--, delete a && --b);
+ }
+ f();
+ console.log(a, b);
+ }
+ expect: {
+ var a = 100, b = 10;
+ function f() {
+ var a = (a--, delete a && --b);
+ }
+ f();
+ console.log(a, b);
+ }
+ expect_stdout: true
+}