js-on-sx: js-new-call honours function-typed constructor returns

new Object(func) should return func itself (per ES spec - "if value
is a native ECMAScript object, return it"), but js-new-call only
kept the ctor's return when it was dict or list — functions fell
through to the empty wrapper. Added (js-function? ret) to the
accept set.
built-ins/Object: 42/50 → 44/50. conformance.sh: 148/148.

lib/js/runtime.sx

@@ -648,7 +648,7 @@
           (if
             (and
               (not (js-undefined? ret))
-              (or (= (type-of ret) "dict") (= (type-of ret) "list")))
+              (or (= (type-of ret) "dict") (= (type-of ret) "list") (js-function? ret)))
             ret
             obj))))))
 

lib/js/test262-scoreboard.json

@@ -1,61 +1,45 @@
 {
   "totals": {
-    "pass": 78,
-    "fail": 15,
-    "skip": 1,
-    "timeout": 6,
-    "total": 100,
-    "runnable": 99,
-    "pass_rate": 78.8
+    "pass": 44,
+    "fail": 6,
+    "skip": 0,
+    "timeout": 0,
+    "total": 50,
+    "runnable": 50,
+    "pass_rate": 88.0
   },
   "categories": [
     {
-      "category": "built-ins/String",
-      "total": 100,
-      "pass": 78,
-      "fail": 15,
-      "skip": 1,
-      "timeout": 6,
-      "pass_rate": 78.8,
+      "category": "built-ins/Object",
+      "total": 50,
+      "pass": 44,
+      "fail": 6,
+      "skip": 0,
+      "timeout": 0,
+      "pass_rate": 88.0,
       "top_failures": [
-        [
-          "Test262Error (assertion failed)",
-          13
-        ],
-        [
-          "Timeout",
-          6
-        ],
         [
           "ReferenceError (undefined symbol)",
-          1
+          4
         ],
         [
           "SyntaxError (parse/unsupported syntax)",
-          1
+          2
         ]
       ]
     }
   ],
   "top_failure_modes": [
-    [
-      "Test262Error (assertion failed)",
-      13
-    ],
-    [
-      "Timeout",
-      6
-    ],
     [
       "ReferenceError (undefined symbol)",
-      1
+      4
     ],
     [
       "SyntaxError (parse/unsupported syntax)",
-      1
+      2
     ]
   ],
   "pinned_commit": "d5e73fc8d2c663554fb72e2380a8c2bc1a318a33",
-  "elapsed_seconds": 224.9,
+  "elapsed_seconds": 42.1,
   "workers": 1
 }

lib/js/test262-scoreboard.md

@@ -1,28 +1,24 @@
 # test262 scoreboard
 
 Pinned commit: `d5e73fc8d2c663554fb72e2380a8c2bc1a318a33`
-Wall time: 224.9s
+Wall time: 42.1s
 
-**Total:** 78/99 runnable passed (78.8%). Raw: pass=78 fail=15 skip=1 timeout=6 total=100.
+**Total:** 44/50 runnable passed (88.0%). Raw: pass=44 fail=6 skip=0 timeout=0 total=50.
 
 ## Top failure modes
 
-- **13x** Test262Error (assertion failed)
-- **6x** Timeout
-- **1x** ReferenceError (undefined symbol)
-- **1x** SyntaxError (parse/unsupported syntax)
+- **4x** ReferenceError (undefined symbol)
+- **2x** SyntaxError (parse/unsupported syntax)
 
 ## Categories (worst pass-rate first, min 10 runnable)
 
 | Category | Pass | Fail | Skip | Timeout | Total | Pass % |
 |---|---:|---:|---:|---:|---:|---:|
-| built-ins/String | 78 | 15 | 1 | 6 | 100 | 78.8% |
+| built-ins/Object | 44 | 6 | 0 | 0 | 50 | 88.0% |
 
 ## Per-category top failures (min 10 runnable, worst first)
 
-### built-ins/String  (78/99 — 78.8%)
+### built-ins/Object  (44/50 — 88.0%)
 
-- **13x** Test262Error (assertion failed)
-- **6x** Timeout
-- **1x** ReferenceError (undefined symbol)
-- **1x** SyntaxError (parse/unsupported syntax)
+- **4x** ReferenceError (undefined symbol)
+- **2x** SyntaxError (parse/unsupported syntax)

plans/js-on-sx.md

@@ -158,6 +158,8 @@ Each item: implement → tests → update progress. Mark `[x]` when tests green.
 
 Append-only record of completed iterations. Loop writes one line per iteration: date, what was done, test count delta.
 
+- 2026-05-08 — **`js-new-call` honours function-typed constructor returns (not just dict/list).** `new Object(func)` should return `func` itself per ES spec ("if value is a native ECMAScript object, return it"), but `js-new-call` only kept the constructor's return when it was dict/list — functions fell through to the empty wrapper. Added `(js-function? ret)` to the accept set. Now `new Object(fn) === fn` and `new Object(fn)()` invokes `fn`. built-ins/Object: 42/50 → 44/50. conformance.sh: 148/148.
+
 - 2026-05-08 — **`var` declarations hoist out of nested blocks; nested `var` becomes `set!`.** JS `var` is function-scoped, but the transpiler was only collecting top-level vars for hoisting and re-emitting `(define name value)` everywhere — so `for (var i = 0; ...) { var r = i; } r` saw `r` as undefined because the inner `(define r ...)` shadowed the (un-hoisted) outer scope. Three-part fix: (1) `js-collect-var-names` now recurses into `js-block`, `js-for`, `js-for-of-in`, `js-while`, `js-do-while`, `js-if`, `js-try`, `js-switch` to find every `var` decl at function scope; (2) `var`-kind decls emit `set!` (mutate hoisted) instead of `define` (create new binding); (3) `js-block` no longer goes through `js-transpile-stmts` (which re-hoists) — uses plain `js-transpile-stmt-list` so the function-level hoist is the only place a binding is created. built-ins/Array: 17/45 → 18/45, String: 77/99 → 78/99. conformance.sh: 148/148.
 
 - 2026-05-08 — **`arr.length = N` extends the array (no-op for shrink).** `js-list-set!` was a no-op for the `length` key. Added a clause that pads with `js-undefined` via `js-pad-list!` when N > current length. Skipped truncation for now: the `pop-last!` SX primitive doesn't actually mutate the list (verified by direct test — length unchanged after pop), so there's no clean way to shrink in place from SX. Extension covers the common test262 cases (`var x = []; x.length = 5`). built-ins/Array: 16/45 → 17/45. conformance.sh: 148/148.