feat(hermes): add pr2045 object-literal accessor home-object patch

README.md

@@ -18,6 +18,7 @@ PRs still in flight. Every row has a patch in `packages/` you can drop into your
 
 | Package | Version | Fix | PR |
 | :--- | :--- | :--- | :--- |
+| [`hermes`](packages/hermes/) | n/a | Cherry-pick `18a9634659` onto the `250829098.0.0-stable` branch React Native 0.85 ships. `genObjectExpr` passed `nullptr` as the home object when generating an object-literal getter or setter, so `super.x` inside an accessor compiled against a null home object and SIGSEGV'd `hermesc` at compile time. Makes accessors consistent with the regular-method path, which already passes `capturedObj`. Source fix for one of the three Hermes V1 codegen bugs `babel-preset-expo` works around ([expo/expo#45601](https://github.com/expo/expo/pull/45601)). Root cause [facebook/hermes#1761](https://github.com/facebook/hermes/issues/1761). | [facebook/hermes#2045](https://github.com/facebook/hermes/pull/2045) |
 | [`react-native`](packages/react-native/) | `0.85.3` | Set `:always_out_of_date => "1"` on `hermes-engine.podspec`'s `[Hermes] Replace Hermes for the right configuration, if needed` script_phase. The phase had no declared outputs (overwrites the prebuilt Hermes binary in place per `$CONFIGURATION`), so Xcode 14+ was warning about it on every clean build of every project on the default prebuilt-release-tarball Hermes path. Matches the family pattern from `React-Core-prebuilt.podspec` ([#52133](https://github.com/facebook/react-native/pull/52133)) and `ReactNativeDependencies.podspec` ([#49812](https://github.com/facebook/react-native/pull/49812)). | [facebook/react-native#56912](https://github.com/facebook/react-native/pull/56912) |
 | [`bun`](packages/oven-sh/bun/) | `1.3.14` | Drop the order-dependent peer-dep early-match block from `get_or_put_resolved_package` so `bun.lock` stops varying run to run. The block bound peers to whichever same-name resolution `package_index` held first, and `package_index` fills in thread-pool-completion order. Dedup and the "incorrect peer dependency" warning move into `Tree::hoist_dependency` where placement is deterministic. Rust port of Dylan's [#29804](https://github.com/oven-sh/bun/pull/29804). | [oven-sh/bun#30855](https://github.com/oven-sh/bun/pull/30855) |
 | [`@convex-dev/better-auth`](packages/@convex-dev/better-auth/) | `0.12.2` | Wrap `fetchAccessToken` in `new Promise()` so `useConvexAuth().isAuthenticated` flips after sign-in on Hermes V1. The Expo SDK 56 canary dropped `@babel/plugin-transform-async-to-generator` from its Hermes V1 preset ([expo/expo#45345](https://github.com/expo/expo/pull/45345)), exposing a bridge race the transform's extra tick was hiding. Babel-layer root fix in [facebook/react-native#56816](https://github.com/facebook/react-native/pull/56816). | [get-convex/better-auth#368](https://github.com/get-convex/better-auth/pull/368) |

packages/hermes/hermes-pr2045.patch

@@ -0,0 +1,46 @@
+diff --git a/lib/IRGen/ESTreeIRGen-expr.cpp b/lib/IRGen/ESTreeIRGen-expr.cpp
+index 073cb38e5a0..4d27ac94007 100644
+--- a/lib/IRGen/ESTreeIRGen-expr.cpp
++++ b/lib/IRGen/ESTreeIRGen-expr.cpp
+@@ -1634,7 +1634,7 @@ Value *ESTreeIRGen::genObjectExpr(ESTree::ObjectExpressionNode *Expr) {
+             Builder.createIdentifier("get " + keyStr.str()),
+             /* superClassNode */ nullptr,
+             Function::DefinitionKind::ES5Function,
+-            /* homeObject */ nullptr,
++            /* homeObject */ capturedObj,
+             /* parentNode */ propValue->getterProp);
+       }
+
+@@ -1645,7 +1645,7 @@ Value *ESTreeIRGen::genObjectExpr(ESTree::ObjectExpressionNode *Expr) {
+             Builder.createIdentifier("set " + keyStr.str()),
+             /* superClassNode */ nullptr,
+             Function::DefinitionKind::ES5Function,
+-            /* homeObject */ nullptr,
++            /* homeObject */ capturedObj,
+             /* parentNode */ propValue->setterProp);
+       }
+
+diff --git a/test/hermes/object-literal-getter-super.js b/test/hermes/object-literal-getter-super.js
+index 5ba94c9a0ba..846fd684f51 100644
+--- a/test/hermes/object-literal-getter-super.js
++++ b/test/hermes/object-literal-getter-super.js
+@@ -20,3 +20,19 @@ var object = {
+ Object.setPrototypeOf(object, proto);
+ print(object.a);
+ // CHECK: a proto m
++
++// Test that accessors without computed names can also refer to super.
++(function () {
++  let v1 = {
++    get a() {
++      let x = super.m;
++      print(x);
++    }
++  }
++  let parent = { m: 12 };
++  v1.a;
++// CHECK-NEXT: undefined
++  Object.setPrototypeOf(v1, parent);
++  v1.a;
++// CHECK-NEXT: 12
++})();