[compiler] support numeric object keys

compiler/packages/babel-plugin-react-compiler/src/HIR/BuildHIR.ts

@@ -1439,6 +1439,11 @@ function lowerObjectPropertyKey(
       kind: 'identifier',
       name: key.node.name,
     };
+  } else if (key.isNumericLiteral()) {
+    return {
+      kind: 'identifier',
+      name: String(key.node.value),
+    };
   }
 
   builder.errors.push({

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/object-numeric-index.expect.md

@@ -0,0 +1,47 @@
+
+## Input
+
+```javascript
+function foo(x) {
+  const y = {0x10: x};
+  const {16: z} = y;
+  return z;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: foo,
+  params: [10],
+  isComponent: false,
+};
+
+```
+
+## Code
+
+```javascript
+import { c as _c } from "react/compiler-runtime";
+function foo(x) {
+  const $ = _c(2);
+  let t0;
+  if ($[0] !== x) {
+    t0 = { 16: x };
+    $[0] = x;
+    $[1] = t0;
+  } else {
+    t0 = $[1];
+  }
+  const y = t0;
+  const { 16: z } = y;
+  return z;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: foo,
+  params: [10],
+  isComponent: false,
+};
+
+```
+
+### Eval output
+(kind: ok) 10

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/object-numeric-index.js

@@ -0,0 +1,11 @@
+function foo(x) {
+  const y = {0x10: x};
+  const {16: z} = y;
+  return z;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: foo,
+  params: [10],
+  isComponent: false,
+};