test(codemode): vendor every eligible test262 directory and bound unsupported globals (#51242)

packages/codemode/test/test262/README.md

@@ -12,7 +12,8 @@ Without them the runner registers no tests, so CI is unaffected. Licensed under
 
 ## Layout
 
-- `manifest.json` — the pinned upstream revision, which upstream directories are copied, and what is left out.
+- `manifest.json` — the pinned upstream revision, which upstream directories are copied (every `built-ins` and
+  `language` directory, about 14,900 files after filtering), and what is left out.
 - `built-ins/`, `language/` — the copied files, mirroring upstream `test/`; gitignored.
 - `skipped.txt` — vendored files that fail on a known interpreter gap, one `path  # reason` per line. They are
   skipped, and each gap is listed as unchecked in `interpreter-support.md`.
@@ -26,7 +27,8 @@ Without them the runner registers no tests, so CI is unaffected. Licensed under
 manifest marks unsupported, or when its code matches one of the manifest's `boundaries` patterns. The sync checks the
 checkout is at the pinned revision, so every machine runs the same files. Boundaries are
 intentional limits of the interpreter, not compatibility work: classes, prototype objects, property descriptors,
-accessors, boxed primitives, sloppy mode, `eval`, `Symbol()`, and the `$262` host API. If one
+accessors, boxed primitives, typed arrays and buffers, weak collections, `Reflect` and `Proxy`, sloppy mode, `eval`,
+`Symbol()`, and the `$262` host API. If one
 of those decisions changes, delete its entry and re-sync; the tests are upstream, not lost.
 
 ## Commands

packages/codemode/test/test262/manifest.json

@@ -1,39 +1,16 @@
 {
   "revision": "250f204f23a9249ff204be2baec29600faae7b75",
-  "directories": [
-    "built-ins/Array/prototype",
-    "built-ins/Date",
-    "built-ins/Function/prototype/apply",
-    "built-ins/Function/prototype/bind",
-    "built-ins/Function/prototype/call",
-    "built-ins/Iterator",
-    "built-ins/Object/freeze",
-    "built-ins/Object/getPrototypeOf",
-    "built-ins/Object/is",
-    "built-ins/Object/isExtensible",
-    "built-ins/Object/isFrozen",
-    "built-ins/Object/isSealed",
-    "built-ins/Object/preventExtensions",
-    "built-ins/String/raw",
-    "built-ins/parseFloat",
-    "built-ins/parseInt",
-    "language/arguments-object",
-    "language/expressions/assignment",
-    "language/expressions/does-not-equals",
-    "language/expressions/equals",
-    "language/expressions/exponentiation",
-    "language/expressions/tagged-template",
-    "language/expressions/template-literal",
-    "language/expressions/this",
-    "language/statements"
-  ],
+  "directories": ["built-ins", "language"],
   "harness": ["assert.js", "sta.js", "compareArray.js", "doneprintHandle.js"],
   "flags": ["module", "raw", "noStrict"],
   "boundaries": {
     "class": "\\bclass\\s*[A-Za-z_${]",
     "accessor properties": "\\b(get|set)\\s+[\\w$\\[][^\\n(]*\\(",
     "property descriptors": "Object\\.(defineProperty|defineProperties|getOwnPropertyDescriptors?|getOwnPropertyNames|setPrototypeOf)\\b",
-    "boxed primitives": "\\bnew\\s+(String|Number|Boolean)\\s*\\(",
+    "boxed primitives": "\\b(new\\s+(String|Number|Boolean)\\b|Object\\s*\\(\\s*(true|false|-?\\d|['\"]))",
+    "typed arrays and buffers": "\\b(ArrayBuffer|SharedArrayBuffer|DataView|Int8Array|Uint8ClampedArray|Int16Array|Uint16Array|Int32Array|Uint32Array|Float16Array|Float32Array|Float64Array|BigInt64Array|BigUint64Array)\\b",
+    "weak collections": "\\b(WeakMap|WeakSet|WeakRef|FinalizationRegistry)\\b",
+    "Reflect and Proxy": "\\b(Reflect|Proxy)\\b",
     "sloppy mode": "\\bwith\\s*\\(",
     "eval": "\\b(eval|Function)\\b",
     "new.target": "\\bnew\\.target\\b",