implement keep_fargs for mangle (#5307)

closes #4657
2022-01-20 21:13:26 +00:00
parent efed55f42d
commit e24b255350
20 changed files with 507 additions and 267 deletions
--- a/test/compress/ie.js
+++ b/test/compress/ie.js
@@ -3109,9 +3109,9 @@ issue_5081_call: {
        }));
    }
    expect: {
-        function f(b) {
+        function f(a) {
            // IE5-10: TypeError: Function expected
-            return b(b = "A") + (b += "SS");
+            return a(a = "A") + (a += "SS");
        }
        console.log(f(function() {
            return "P";
@@ -3161,8 +3161,8 @@ issue_5081_property_access: {
        console.log(f({ A: "P" }));
    }
    expect: {
-        function f(b) {
-            return b[b = "A"] + (b += "SS");
+        function f(a) {
+            return a[a = "A"] + (a += "SS");
        }
        // IE9-11: undefinedASS
        console.log(f({ A: "P" }));