From fbbfcfcbeff23b183cafa69de351a1063ba1441e Mon Sep 17 00:00:00 2001
From: cod1r <jasonho353@gmail.com>
Date: Wed, 9 Jul 2025 23:37:07 -0500
Subject: [PATCH 1/5] fix: #12184

---
 .../oxc_transformer/src/es2018/object_rest_spread.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/crates/oxc_transformer/src/es2018/object_rest_spread.rs b/crates/oxc_transformer/src/es2018/object_rest_spread.rs
index 79e81ee23dfd5..59111323864c4 100644
--- a/crates/oxc_transformer/src/es2018/object_rest_spread.rs
+++ b/crates/oxc_transformer/src/es2018/object_rest_spread.rs
@@ -576,6 +576,18 @@ impl<'a> ObjectRestSpread<'a, '_> {
         }
         if replaced && arrow.expression {
             arrow.expression = false;
+            let expr_stmt = arrow
+                .body
+                .statements
+                .iter_mut()
+                .rev()
+                .find(|s| matches!(s, Statement::ExpressionStatement(_)));
+            if let Some(expr_stmt) = expr_stmt {
+                if let Statement::ExpressionStatement(inner_expr_stmt) = expr_stmt {
+                    let expression = Some(inner_expr_stmt.expression.take_in(ctx.ast));
+                    *expr_stmt = ctx.ast.statement_return(SPAN, expression);
+                }
+            }
         }
     }
 

From 6aa3a1915f9b2771bb575a7faaa76bd571a8ce6b Mon Sep 17 00:00:00 2001
From: cod1r <jasonho353@gmail.com>
Date: Thu, 10 Jul 2025 02:41:13 -0500
Subject: [PATCH 2/5] add tests

---
 .../snapshots/oxc.snap.md                     |  8 +++++--
 .../with-arrow-function-expression/input.js   |  1 +
 .../with-arrow-function-expression/output.js  | 21 +++++++++++++++++++
 3 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/input.js
 create mode 100644 tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js

diff --git a/tasks/transform_conformance/snapshots/oxc.snap.md b/tasks/transform_conformance/snapshots/oxc.snap.md
index 58b80109d1ef9..e9fdf4b0bb240 100644
--- a/tasks/transform_conformance/snapshots/oxc.snap.md
+++ b/tasks/transform_conformance/snapshots/oxc.snap.md
@@ -1,6 +1,6 @@
 commit: 1d4546bc
 
-Passed: 156/259
+Passed: 156/260
 
 # All Passed:
 * babel-plugin-transform-class-static-block
@@ -10,7 +10,6 @@ Passed: 156/259
 * babel-plugin-transform-optional-chaining
 * babel-plugin-transform-optional-catch-binding
 * babel-plugin-transform-async-generator-functions
-* babel-plugin-transform-object-rest-spread
 * babel-plugin-transform-async-to-generator
 * babel-plugin-transform-exponentiation-operator
 * babel-plugin-transform-arrow-functions
@@ -44,6 +43,11 @@ after transform: SymbolId(0): [ReferenceId(0), ReferenceId(2), ReferenceId(6), R
 rebuilt        : SymbolId(0): [ReferenceId(0), ReferenceId(2), ReferenceId(6), ReferenceId(10)]
 
 
+# babel-plugin-transform-object-rest-spread (5/6)
+* object-rest/with-arrow-function-expression/input.js
+x Output mismatch
+
+
 # babel-plugin-transform-typescript (5/26)
 * allow-declare-fields-false/input.ts
 Unresolved references mismatch:
diff --git a/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/input.js b/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/input.js
new file mode 100644
index 0000000000000..b5c7fc4a83c55
--- /dev/null
+++ b/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/input.js
@@ -0,0 +1 @@
+const fn = ({ ...args }) => args;
diff --git a/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js b/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js
new file mode 100644
index 0000000000000..8d3d5f029362a
--- /dev/null
+++ b/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js
@@ -0,0 +1,21 @@
+function _objectDestructuringEmpty(t) {
+  if (null == t) throw new TypeError("Cannot destructure " + t);
+}
+function _extends() {
+  return (
+    (_extends = Object.assign
+      ? Object.assign.bind()
+      : function (n) {
+          for (var e = 1; e < arguments.length; e++) {
+            var t = arguments[e];
+            for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
+          }
+          return n;
+        }),
+    _extends.apply(null, arguments)
+  );
+}
+const fn = (_ref) => {
+  let args = _extends({}, (_objectDestructuringEmpty(_ref), _ref));
+  return args;
+};

From 34e911d592c628b72200fac904db5f645385c350 Mon Sep 17 00:00:00 2001
From: cod1r <jasonho353@gmail.com>
Date: Sat, 12 Jul 2025 01:29:31 -0500
Subject: [PATCH 3/5] use proper command to generate passing output.js from
 input.js

---
 .../snapshots/babel_exec.snap.md              | 473 +-----------------
 .../snapshots/oxc_exec.snap.md                |  15 +-
 .../with-arrow-function-expression/output.js  |  22 +-
 3 files changed, 6 insertions(+), 504 deletions(-)

diff --git a/tasks/transform_conformance/snapshots/babel_exec.snap.md b/tasks/transform_conformance/snapshots/babel_exec.snap.md
index 7d10e2e96981e..8e4bd959e55d4 100644
--- a/tasks/transform_conformance/snapshots/babel_exec.snap.md
+++ b/tasks/transform_conformance/snapshots/babel_exec.snap.md
@@ -2,475 +2,4 @@ commit: 1d4546bc
 
 node: v22.14.0
 
-Passed: 322 of 412 (78.16%)
-
-Failures:
-
-./fixtures/babel/babel-plugin-proposal-explicit-resource-management-test-fixtures-transform-top-level-hoisting-mutate-outer-class-binding-exec.test.js
-Parse failure: 'import', and 'export' cannot be used outside of module code
-At file: ./tasks/transform_conformance/fixtures/babel/babel-plugin-proposal-explicit-resource-management-test-fixtures-transform-top-level-hoisting-mutate-outer-class-binding-exec.test.js:4:1
-
-./fixtures/babel/babel-plugin-transform-arrow-functions-test-fixtures-arrow-functions-implicit-var-arguments-exec.test.js
-Parse failure: 'eval' and 'arguments' cannot be used as a binding identifier in strict mode
-At file: ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-arrow-functions-test-fixtures-arrow-functions-implicit-var-arguments-exec.test.js:4:5
-
-./fixtures/babel/babel-plugin-transform-async-to-generator-test-fixtures-async-to-generator-async-complex-params-exec.test.js
-TypeError: Cannot destructure property 'b' of 'undefined' as it is undefined.
-    at Object.foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-async-to-generator-test-fixtures-async-to-generator-async-complex-params-exec.test.js:7:12)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-async-to-generator-test-fixtures-async-to-generator-async-complex-params-exec.test.js:10:6
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-assumption-setPublicClassFields-static-infer-name-exec.test.js
-AssertionError: expected '_Class' to be 'Foo' // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-assumption-setPublicClassFields-static-infer-name-exec.test.js:8:19
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-call-in-decorator-exec.test.js
-AssertionError: expected undefined to be 'hello' // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-call-in-decorator-exec.test.js:21:28
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-accessor-key-exec.test.js
-Parse failure: Unexpected token `[`. Expected * for generator, private key, identifier or async
-At file: ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-accessor-key-exec.test.js:14:13
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-decorator-exec.test.js
-AssertionError: expected undefined to be 'hello' // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-decorator-exec.test.js:22:28
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-exec.test.js
-TypeError: Cannot read properties of undefined (reading 'bind')
-    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-exec.test.js:20:59)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-exec.test.js:78:12
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-with-transform-exec.test.js
-TypeError: Cannot read properties of undefined (reading 'bind')
-    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-with-transform-exec.test.js:20:59)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-with-transform-exec.test.js:78:12
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js
-TypeError: e.has is not a function
-    at _assertClassBrand (./npm/runtime/src/helpers/assertClassBrand.js:2:44)
-    at func (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js:10:12)
-    at Function.method (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js:12:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js:16:14
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-computed-toPrimitive-exec.test.js
-AssertionError: expected [Function] to throw error including '@@toPrimitive must return a primitive…' but got 'Cannot convert object to primitive va…'
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
-    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-computed-toPrimitive-exec.test.js:37:5
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-delete-super-property-exec.test.js
-AssertionError: expected function to throw an error, but it didn't
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-delete-super-property-exec.test.js:25:5
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-loose-static-infer-name-exec.test.js
-AssertionError: expected '_Class' to be 'Foo' // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-loose-static-infer-name-exec.test.js:8:19
-
-./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-static-infer-name-exec.test.js
-AssertionError: expected '_Class' to be 'Foo' // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-static-infer-name-exec.test.js:9:19
-
-./fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-loose-private-methods-access-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at getFoo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-loose-private-methods-access-exec.test.js:12:17)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-loose-private-methods-access-exec.test.js:13:9
-
-./fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-new-target-exec.test.js
-AssertionError: expected [Function Base] to be undefined // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-new-target-exec.test.js:10:29
-
-./fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-assignment-shadowed-block-scoped-bindings-exec.test.js
-ReferenceError: Cannot access 'a' before initialization
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-assignment-shadowed-block-scoped-bindings-exec.test.js:8:19
-
-./fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-declaration-shadowed-block-scoped-bindings-exec.test.js
-ReferenceError: Cannot access 'a' before initialization
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-declaration-shadowed-block-scoped-bindings-exec.test.js:8:12
-
-./fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js
-TypeError: Cannot read properties of undefined (reading 'x')
-    at m (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js:10:16)
-    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js:25:63)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js:68:12
-
-./fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js
-TypeError: Cannot read properties of undefined (reading 'x')
-    at m (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js:10:16)
-    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js:25:63)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js:68:12
-
-./fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js
-TypeError: Cannot read properties of undefined (reading 'x')
-    at m (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js:10:16)
-    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js:25:63)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js:68:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-basic-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-basic-exec.test.js:10:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-basic-exec.test.js:30:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-class-binding-exec.test.js
-ReferenceError: _A_brand is not defined
-    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-class-binding-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-class-binding-exec.test.js:21:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-get-only-setter-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-get-only-setter-exec.test.js:11:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-get-only-setter-exec.test.js:22:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-helper-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-helper-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-helper-exec.test.js:18:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-reassignment-exec.test.js
-AssertionError: expected +0 to be 1 // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-reassignment-exec.test.js:17:18
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-set-only-getter-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-set-only-getter-exec.test.js:11:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-set-only-getter-exec.test.js:23:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-updates-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-updates-exec.test.js:10:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-updates-exec.test.js:49:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-basic-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-basic-exec.test.js:10:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-basic-exec.test.js:30:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-class-binding-exec.test.js
-ReferenceError: _A_brand is not defined
-    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-class-binding-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-class-binding-exec.test.js:21:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:11:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:22:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-helper-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-helper-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-helper-exec.test.js:18:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-set-only-getter-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-set-only-getter-exec.test.js:11:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-set-only-getter-exec.test.js:23:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-updates-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-updates-exec.test.js:10:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-updates-exec.test.js:49:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js
-TypeError: "#privateFieldValue" is write-only
-    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:14:18)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:20:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-assignment-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-assignment-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-assignment-exec.test.js:15:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-async-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-async-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-async-exec.test.js:17:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-before-fields-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-before-fields-exec.test.js:10:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-before-fields-exec.test.js:24:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-class-binding-exec.test.js
-ReferenceError: _A_brand is not defined
-    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-class-binding-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-class-binding-exec.test.js:21:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-context-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-context-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-context-exec.test.js:34:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-exfiltrated-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-exfiltrated-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-exfiltrated-exec.test.js:17:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-generator-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-generator-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-generator-exec.test.js:18:14
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-reassignment-exec.test.js
-AssertionError: expected +0 to be 1 // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-reassignment-exec.test.js:17:18
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-super-exec.test.js
-ReferenceError: _Sub_brand is not defined
-    at new Sub (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-super-exec.test.js:16:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-super-exec.test.js:29:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-assignment-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-assignment-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-assignment-exec.test.js:15:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-async-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-async-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-async-exec.test.js:17:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-before-fields-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-before-fields-exec.test.js:11:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-before-fields-exec.test.js:25:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-class-binding-exec.test.js
-ReferenceError: _A_brand is not defined
-    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-class-binding-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-class-binding-exec.test.js:21:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-context-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-context-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-context-exec.test.js:34:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-exfiltrated-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-exfiltrated-exec.test.js:9:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-exfiltrated-exec.test.js:17:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-generator-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-generator-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-generator-exec.test.js:18:14
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-super-exec.test.js
-ReferenceError: _Sub_brand is not defined
-    at new Sub (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-super-exec.test.js:16:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-super-exec.test.js:29:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsSymbols-async-exec.test.js
-ReferenceError: _Cl_brand is not defined
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsSymbols-async-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsSymbols-async-exec.test.js:17:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-basic-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-basic-exec.test.js:20:25)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-basic-exec.test.js:26:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-class-check-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-class-check-exec.test.js:7:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-class-check-exec.test.js:14:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-exfiltrated-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-exfiltrated-exec.test.js:9:19)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-exfiltrated-exec.test.js:17:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-generator-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Cl.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-generator-exec.test.js:7:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-generator-exec.test.js:14:23
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-scopable-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-scopable-exec.test.js:7:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-scopable-exec.test.js:18:18
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-super-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.check (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-super-exec.test.js:17:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-super-exec.test.js:24:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-this-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.extract (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-this-exec.test.js:17:12)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-this-exec.test.js:27:25
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-basic-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-basic-exec.test.js:20:25)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-basic-exec.test.js:26:9
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-class-check-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-class-check-exec.test.js:7:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-class-check-exec.test.js:14:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-exfiltrated-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-exfiltrated-exec.test.js:9:19)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-exfiltrated-exec.test.js:17:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-generator-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Cl.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-generator-exec.test.js:7:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-generator-exec.test.js:14:23
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-scopable-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-scopable-exec.test.js:7:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-scopable-exec.test.js:18:18
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-super-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.check (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-super-exec.test.js:17:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-super-exec.test.js:24:13
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-this-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.extract (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-this-exec.test.js:17:12)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-this-exec.test.js:27:25
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-get-only-setter-exec.test.js
-TypeError: "#privateStaticFieldValue" is write-only
-    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
-    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-get-only-setter-exec.test.js:7:15)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-get-only-setter-exec.test.js:14:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js:12:9)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js:21:11
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js:24:4
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-basic-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.getValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-basic-exec.test.js:10:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-basic-exec.test.js:27:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-destructure-set-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-destructure-set-exec.test.js:10:5)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-destructure-set-exec.test.js:22:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-get-only-setter-exec.test.js
-TypeError: "#privateStaticFieldValue" is write-only
-    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
-    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-get-only-setter-exec.test.js:11:15)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-get-only-setter-exec.test.js:22:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-updates-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.testUpdates (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-updates-exec.test.js:24:4)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-updates-exec.test.js:47:5
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js:12:9)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js:21:11
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js:24:4
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-basic-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.getValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-basic-exec.test.js:10:11)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-basic-exec.test.js:27:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-destructure-set-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-destructure-set-exec.test.js:10:5)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-destructure-set-exec.test.js:22:2
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js
-TypeError: "#privateStaticFieldValue" is write-only
-    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
-    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:11:15)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:22:12
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-updates-exec.test.js
-TypeError: attempted to use private field on non-instance
-    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
-    at Function.testUpdates (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-updates-exec.test.js:25:4)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-updates-exec.test.js:48:5
-
-./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js
-TypeError: "#privateStaticFieldValue" is write-only
-    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
-    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:7:15)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:14:12
-
-./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-assumption-privateFieldsAsProperties-method-exec.test.js
-ReferenceError: _Foo_brand is not defined
-    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-assumption-privateFieldsAsProperties-method-exec.test.js:8:38)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-assumption-privateFieldsAsProperties-method-exec.test.js:19:13
-
-./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-rhs-not-object-exec.test.js
-AssertionError: expected [Function] to throw error including 'right-hand side of \'in\' should be a…' but got '_Class_brand is not defined'
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
-    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-rhs-not-object-exec.test.js:176:5
-
-./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-static-shadow-exec.test.js
-AssertionError: expected 2 to be 5 // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-static-shadow-exec.test.js:18:25
-
-./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-static-shadow-exec.test.js
-AssertionError: expected 2 to be 5 // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-static-shadow-exec.test.js:18:25
-
-./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-half-constructed-static-exec.test.js
-AssertionError: expected true to be false // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-half-constructed-static-exec.test.js:29:15
-
-./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-static-shadow-exec.test.js
-AssertionError: expected 2 to be 5 // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-static-shadow-exec.test.js:18:25
-
-./fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-basic-sample-exec.test.js
-ReferenceError: transformAsync is not defined
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-basic-sample-exec.test.js:4:16
-
-./fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-with-source-exec.test.js
-ReferenceError: transformAsync is not defined
-    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-with-source-exec.test.js:4:16
-
-./fixtures/babel/babel-preset-env-test-fixtures-plugins-integration-issue-15170-exec.test.js
-AssertionError: expected [Function] to not throw an error but 'ReferenceError: x is not defined' was thrown
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
-    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
-    at ./tasks/transform_conformance/fixtures/babel/babel-preset-env-test-fixtures-plugins-integration-issue-15170-exec.test.js:6:9
-
-./fixtures/babel/babel-preset-env-test-fixtures-sanity-check-es2015-constants-exec.test.js
-TypeError: Assignment to constant variable.
-    at ./tasks/transform_conformance/fixtures/babel/babel-preset-env-test-fixtures-sanity-check-es2015-constants-exec.test.js:5:6
-
-./fixtures/babel/babel-preset-env-test-fixtures-sanity-regex-dot-all-exec.test.js
-AssertionError: expected false to be true // Object.is equality
-    at ./tasks/transform_conformance/fixtures/babel/babel-preset-env-test-fixtures-sanity-regex-dot-all-exec.test.js:10:37
+Passed: 0 of 0 (NaN%)
diff --git a/tasks/transform_conformance/snapshots/oxc_exec.snap.md b/tasks/transform_conformance/snapshots/oxc_exec.snap.md
index ea149f9e2576a..8e4bd959e55d4 100644
--- a/tasks/transform_conformance/snapshots/oxc_exec.snap.md
+++ b/tasks/transform_conformance/snapshots/oxc_exec.snap.md
@@ -2,17 +2,4 @@ commit: 1d4546bc
 
 node: v22.14.0
 
-Passed: 8 of 10 (80.00%)
-
-Failures:
-
-./fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-private-field-resolve-to-method-in-computed-key-exec.test.js
-AssertionError: expected [Function] to throw error including 'Receiver must be an instance of class…' but got 'Private element is not present on thi…'
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
-    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
-    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
-    at ./tasks/transform_conformance/fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-private-field-resolve-to-method-in-computed-key-exec.test.js:96:33
-
-./fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-static-super-tagged-template-exec.test.js
-AssertionError: expected undefined to be [Function C] // Object.is equality
-    at ./tasks/transform_conformance/fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-static-super-tagged-template-exec.test.js:15:17
+Passed: 0 of 0 (NaN%)
diff --git a/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js b/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js
index 8d3d5f029362a..b924c442d8d28 100644
--- a/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js
+++ b/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures/object-rest/with-arrow-function-expression/output.js
@@ -1,21 +1,7 @@
-function _objectDestructuringEmpty(t) {
-  if (null == t) throw new TypeError("Cannot destructure " + t);
-}
-function _extends() {
-  return (
-    (_extends = Object.assign
-      ? Object.assign.bind()
-      : function (n) {
-          for (var e = 1; e < arguments.length; e++) {
-            var t = arguments[e];
-            for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
-          }
-          return n;
-        }),
-    _extends.apply(null, arguments)
-  );
-}
 const fn = (_ref) => {
-  let args = _extends({}, (_objectDestructuringEmpty(_ref), _ref));
+  let args = babelHelpers.extends(
+    {},
+    (babelHelpers.objectDestructuringEmpty(_ref), _ref),
+  );
   return args;
 };

From 53516aff8587e514d955477d60c18c2f55d3094b Mon Sep 17 00:00:00 2001
From: cod1r <jasonho353@gmail.com>
Date: Sat, 12 Jul 2025 02:19:24 -0500
Subject: [PATCH 4/5] rerun exec snapshots

---
 .../snapshots/babel_exec.snap.md              | 473 +++++++++++++++++-
 .../snapshots/oxc_exec.snap.md                |  15 +-
 2 files changed, 486 insertions(+), 2 deletions(-)

diff --git a/tasks/transform_conformance/snapshots/babel_exec.snap.md b/tasks/transform_conformance/snapshots/babel_exec.snap.md
index 8e4bd959e55d4..7d10e2e96981e 100644
--- a/tasks/transform_conformance/snapshots/babel_exec.snap.md
+++ b/tasks/transform_conformance/snapshots/babel_exec.snap.md
@@ -2,4 +2,475 @@ commit: 1d4546bc
 
 node: v22.14.0
 
-Passed: 0 of 0 (NaN%)
+Passed: 322 of 412 (78.16%)
+
+Failures:
+
+./fixtures/babel/babel-plugin-proposal-explicit-resource-management-test-fixtures-transform-top-level-hoisting-mutate-outer-class-binding-exec.test.js
+Parse failure: 'import', and 'export' cannot be used outside of module code
+At file: ./tasks/transform_conformance/fixtures/babel/babel-plugin-proposal-explicit-resource-management-test-fixtures-transform-top-level-hoisting-mutate-outer-class-binding-exec.test.js:4:1
+
+./fixtures/babel/babel-plugin-transform-arrow-functions-test-fixtures-arrow-functions-implicit-var-arguments-exec.test.js
+Parse failure: 'eval' and 'arguments' cannot be used as a binding identifier in strict mode
+At file: ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-arrow-functions-test-fixtures-arrow-functions-implicit-var-arguments-exec.test.js:4:5
+
+./fixtures/babel/babel-plugin-transform-async-to-generator-test-fixtures-async-to-generator-async-complex-params-exec.test.js
+TypeError: Cannot destructure property 'b' of 'undefined' as it is undefined.
+    at Object.foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-async-to-generator-test-fixtures-async-to-generator-async-complex-params-exec.test.js:7:12)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-async-to-generator-test-fixtures-async-to-generator-async-complex-params-exec.test.js:10:6
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-assumption-setPublicClassFields-static-infer-name-exec.test.js
+AssertionError: expected '_Class' to be 'Foo' // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-assumption-setPublicClassFields-static-infer-name-exec.test.js:8:19
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-call-in-decorator-exec.test.js
+AssertionError: expected undefined to be 'hello' // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-call-in-decorator-exec.test.js:21:28
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-accessor-key-exec.test.js
+Parse failure: Unexpected token `[`. Expected * for generator, private key, identifier or async
+At file: ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-accessor-key-exec.test.js:14:13
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-decorator-exec.test.js
+AssertionError: expected undefined to be 'hello' // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-nested-class-super-property-in-decorator-exec.test.js:22:28
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-exec.test.js
+TypeError: Cannot read properties of undefined (reading 'bind')
+    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-exec.test.js:20:59)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-exec.test.js:78:12
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-with-transform-exec.test.js
+TypeError: Cannot read properties of undefined (reading 'bind')
+    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-with-transform-exec.test.js:20:59)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-loose-parenthesized-optional-member-call-with-transform-exec.test.js:78:12
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js
+TypeError: e.has is not a function
+    at _assertClassBrand (./npm/runtime/src/helpers/assertClassBrand.js:2:44)
+    at func (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js:10:12)
+    at Function.method (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js:12:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-private-static-shadow-exec.test.js:16:14
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-computed-toPrimitive-exec.test.js
+AssertionError: expected [Function] to throw error including '@@toPrimitive must return a primitive…' but got 'Cannot convert object to primitive va…'
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
+    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-computed-toPrimitive-exec.test.js:37:5
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-delete-super-property-exec.test.js
+AssertionError: expected function to throw an error, but it didn't
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-delete-super-property-exec.test.js:25:5
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-loose-static-infer-name-exec.test.js
+AssertionError: expected '_Class' to be 'Foo' // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-loose-static-infer-name-exec.test.js:8:19
+
+./fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-static-infer-name-exec.test.js
+AssertionError: expected '_Class' to be 'Foo' // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-properties-test-fixtures-public-static-infer-name-exec.test.js:9:19
+
+./fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-loose-private-methods-access-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at getFoo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-loose-private-methods-access-exec.test.js:12:17)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-loose-private-methods-access-exec.test.js:13:9
+
+./fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-new-target-exec.test.js
+AssertionError: expected [Function Base] to be undefined // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-class-static-block-test-fixtures-integration-new-target-exec.test.js:10:29
+
+./fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-assignment-shadowed-block-scoped-bindings-exec.test.js
+ReferenceError: Cannot access 'a' before initialization
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-assignment-shadowed-block-scoped-bindings-exec.test.js:8:19
+
+./fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-declaration-shadowed-block-scoped-bindings-exec.test.js
+ReferenceError: Cannot access 'a' before initialization
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-object-rest-spread-test-fixtures-object-rest-for-x-declaration-shadowed-block-scoped-bindings-exec.test.js:8:12
+
+./fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js
+TypeError: Cannot read properties of undefined (reading 'x')
+    at m (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js:10:16)
+    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js:25:63)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-assumption-noDocumentAll-parenthesized-expression-member-call-exec.test.js:68:12
+
+./fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js
+TypeError: Cannot read properties of undefined (reading 'x')
+    at m (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js:10:16)
+    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js:25:63)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-exec.test.js:68:12
+
+./fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js
+TypeError: Cannot read properties of undefined (reading 'x')
+    at m (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js:10:16)
+    at Foo.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js:25:63)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-optional-chaining-test-fixtures-general-parenthesized-expression-member-call-loose-exec.test.js:68:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-basic-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-basic-exec.test.js:10:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-basic-exec.test.js:30:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-class-binding-exec.test.js
+ReferenceError: _A_brand is not defined
+    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-class-binding-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-class-binding-exec.test.js:21:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-get-only-setter-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-get-only-setter-exec.test.js:11:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-get-only-setter-exec.test.js:22:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-helper-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-helper-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-helper-exec.test.js:18:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-reassignment-exec.test.js
+AssertionError: expected +0 to be 1 // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-reassignment-exec.test.js:17:18
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-set-only-getter-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-set-only-getter-exec.test.js:11:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-set-only-getter-exec.test.js:23:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-updates-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-updates-exec.test.js:10:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-loose-updates-exec.test.js:49:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-basic-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-basic-exec.test.js:10:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-basic-exec.test.js:30:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-class-binding-exec.test.js
+ReferenceError: _A_brand is not defined
+    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-class-binding-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-class-binding-exec.test.js:21:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:11:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:22:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-helper-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-helper-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-helper-exec.test.js:18:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-set-only-getter-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-set-only-getter-exec.test.js:11:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-set-only-getter-exec.test.js:23:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-updates-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-updates-exec.test.js:10:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsProperties-updates-exec.test.js:49:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js
+TypeError: "#privateFieldValue" is write-only
+    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:14:18)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:20:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-assignment-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-assignment-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-assignment-exec.test.js:15:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-async-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-async-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-async-exec.test.js:17:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-before-fields-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-before-fields-exec.test.js:10:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-before-fields-exec.test.js:24:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-class-binding-exec.test.js
+ReferenceError: _A_brand is not defined
+    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-class-binding-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-class-binding-exec.test.js:21:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-context-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-context-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-context-exec.test.js:34:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-exfiltrated-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-exfiltrated-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-exfiltrated-exec.test.js:17:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-generator-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-generator-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-generator-exec.test.js:18:14
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-reassignment-exec.test.js
+AssertionError: expected +0 to be 1 // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-reassignment-exec.test.js:17:18
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-super-exec.test.js
+ReferenceError: _Sub_brand is not defined
+    at new Sub (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-super-exec.test.js:16:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-loose-super-exec.test.js:29:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-assignment-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-assignment-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-assignment-exec.test.js:15:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-async-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-async-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-async-exec.test.js:17:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-before-fields-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-before-fields-exec.test.js:11:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-before-fields-exec.test.js:25:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-class-binding-exec.test.js
+ReferenceError: _A_brand is not defined
+    at new A (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-class-binding-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-class-binding-exec.test.js:21:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-context-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-context-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-context-exec.test.js:34:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-exfiltrated-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-exfiltrated-exec.test.js:9:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-exfiltrated-exec.test.js:17:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-generator-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-generator-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-generator-exec.test.js:18:14
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-super-exec.test.js
+ReferenceError: _Sub_brand is not defined
+    at new Sub (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-super-exec.test.js:16:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsProperties-super-exec.test.js:29:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsSymbols-async-exec.test.js
+ReferenceError: _Cl_brand is not defined
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsSymbols-async-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-method-privateFieldsAsSymbols-async-exec.test.js:17:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-basic-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-basic-exec.test.js:20:25)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-basic-exec.test.js:26:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-class-check-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-class-check-exec.test.js:7:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-class-check-exec.test.js:14:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-exfiltrated-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-exfiltrated-exec.test.js:9:19)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-exfiltrated-exec.test.js:17:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-generator-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Cl.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-generator-exec.test.js:7:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-generator-exec.test.js:14:23
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-scopable-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-scopable-exec.test.js:7:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-scopable-exec.test.js:18:18
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-super-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.check (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-super-exec.test.js:17:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-super-exec.test.js:24:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-this-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.extract (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-this-exec.test.js:17:12)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-loose-this-exec.test.js:27:25
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-basic-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-basic-exec.test.js:20:25)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-basic-exec.test.js:26:9
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-class-check-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-class-check-exec.test.js:7:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-class-check-exec.test.js:14:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-exfiltrated-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new Cl (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-exfiltrated-exec.test.js:9:19)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-exfiltrated-exec.test.js:17:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-generator-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Cl.test (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-generator-exec.test.js:7:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-generator-exec.test.js:14:23
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-scopable-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Cl.publicMethod (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-scopable-exec.test.js:7:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-scopable-exec.test.js:18:18
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-super-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.check (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-super-exec.test.js:17:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-super-exec.test.js:24:13
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-this-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.extract (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-this-exec.test.js:17:12)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-private-static-method-privateFieldsAsProperties-this-exec.test.js:27:25
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-get-only-setter-exec.test.js
+TypeError: "#privateStaticFieldValue" is write-only
+    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
+    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-get-only-setter-exec.test.js:7:15)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-get-only-setter-exec.test.js:14:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js:12:9)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js:21:11
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-access-in-static-field-initializer-exec.test.js:24:4
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-basic-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.getValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-basic-exec.test.js:10:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-basic-exec.test.js:27:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-destructure-set-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-destructure-set-exec.test.js:10:5)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-destructure-set-exec.test.js:22:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-get-only-setter-exec.test.js
+TypeError: "#privateStaticFieldValue" is write-only
+    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
+    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-get-only-setter-exec.test.js:11:15)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-get-only-setter-exec.test.js:22:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-updates-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.testUpdates (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-updates-exec.test.js:24:4)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-loose-updates-exec.test.js:47:5
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js:12:9)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js:21:11
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-access-in-static-field-initializer-exec.test.js:24:4
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-basic-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.getValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-basic-exec.test.js:10:11)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-basic-exec.test.js:27:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-destructure-set-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at new C (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-destructure-set-exec.test.js:10:5)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-destructure-set-exec.test.js:22:2
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js
+TypeError: "#privateStaticFieldValue" is write-only
+    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
+    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:11:15)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-get-only-setter-exec.test.js:22:12
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-updates-exec.test.js
+TypeError: attempted to use private field on non-instance
+    at _classPrivateFieldBase (./npm/runtime/src/helpers/classPrivateFieldLooseBase.js:2:44)
+    at Function.testUpdates (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-updates-exec.test.js:25:4)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsProperties-updates-exec.test.js:48:5
+
+./fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js
+TypeError: "#privateStaticFieldValue" is write-only
+    at _writeOnlyError (./npm/runtime/src/helpers/writeOnlyError.js:2:9)
+    at Function.getPrivateStaticFieldValue (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:7:15)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-methods-test-fixtures-static-accessors-privateFieldsAsSymbols-get-only-setter-exec.test.js:14:12
+
+./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-assumption-privateFieldsAsProperties-method-exec.test.js
+ReferenceError: _Foo_brand is not defined
+    at new Foo (./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-assumption-privateFieldsAsProperties-method-exec.test.js:8:38)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-assumption-privateFieldsAsProperties-method-exec.test.js:19:13
+
+./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-rhs-not-object-exec.test.js
+AssertionError: expected [Function] to throw error including 'right-hand side of \'in\' should be a…' but got '_Class_brand is not defined'
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
+    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-rhs-not-object-exec.test.js:176:5
+
+./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-static-shadow-exec.test.js
+AssertionError: expected 2 to be 5 // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-loose-static-shadow-exec.test.js:18:25
+
+./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-static-shadow-exec.test.js
+AssertionError: expected 2 to be 5 // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-private-static-shadow-exec.test.js:18:25
+
+./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-half-constructed-static-exec.test.js
+AssertionError: expected true to be false // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-half-constructed-static-exec.test.js:29:15
+
+./fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-static-shadow-exec.test.js
+AssertionError: expected 2 to be 5 // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-private-property-in-object-test-fixtures-to-native-fields-static-shadow-exec.test.js:18:25
+
+./fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-basic-sample-exec.test.js
+ReferenceError: transformAsync is not defined
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-basic-sample-exec.test.js:4:16
+
+./fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-with-source-exec.test.js
+ReferenceError: transformAsync is not defined
+    at ./tasks/transform_conformance/fixtures/babel/babel-plugin-transform-react-jsx-source-test-fixtures-react-source-with-source-exec.test.js:4:16
+
+./fixtures/babel/babel-preset-env-test-fixtures-plugins-integration-issue-15170-exec.test.js
+AssertionError: expected [Function] to not throw an error but 'ReferenceError: x is not defined' was thrown
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
+    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
+    at ./tasks/transform_conformance/fixtures/babel/babel-preset-env-test-fixtures-plugins-integration-issue-15170-exec.test.js:6:9
+
+./fixtures/babel/babel-preset-env-test-fixtures-sanity-check-es2015-constants-exec.test.js
+TypeError: Assignment to constant variable.
+    at ./tasks/transform_conformance/fixtures/babel/babel-preset-env-test-fixtures-sanity-check-es2015-constants-exec.test.js:5:6
+
+./fixtures/babel/babel-preset-env-test-fixtures-sanity-regex-dot-all-exec.test.js
+AssertionError: expected false to be true // Object.is equality
+    at ./tasks/transform_conformance/fixtures/babel/babel-preset-env-test-fixtures-sanity-regex-dot-all-exec.test.js:10:37
diff --git a/tasks/transform_conformance/snapshots/oxc_exec.snap.md b/tasks/transform_conformance/snapshots/oxc_exec.snap.md
index 8e4bd959e55d4..ea149f9e2576a 100644
--- a/tasks/transform_conformance/snapshots/oxc_exec.snap.md
+++ b/tasks/transform_conformance/snapshots/oxc_exec.snap.md
@@ -2,4 +2,17 @@ commit: 1d4546bc
 
 node: v22.14.0
 
-Passed: 0 of 0 (NaN%)
+Passed: 8 of 10 (80.00%)
+
+Failures:
+
+./fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-private-field-resolve-to-method-in-computed-key-exec.test.js
+AssertionError: expected [Function] to throw error including 'Receiver must be an instance of class…' but got 'Private element is not present on thi…'
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1420:16)
+    at Proxy.<anonymous> (./node_modules/.pnpm/@vitest+expect@3.2.4/node_modules/@vitest/expect/dist/index.js:1029:14)
+    at Proxy.methodWrapper (./node_modules/.pnpm/chai@5.2.0/node_modules/chai/chai.js:1618:25)
+    at ./tasks/transform_conformance/fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-private-field-resolve-to-method-in-computed-key-exec.test.js:96:33
+
+./fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-static-super-tagged-template-exec.test.js
+AssertionError: expected undefined to be [Function C] // Object.is equality
+    at ./tasks/transform_conformance/fixtures/oxc/babel-plugin-transform-class-properties-test-fixtures-static-super-tagged-template-exec.test.js:15:17

From c489541407fbfb4ef097e6480c7de506fb74313d Mon Sep 17 00:00:00 2001
From: cod1r <jasonho353@gmail.com>
Date: Sat, 12 Jul 2025 03:15:40 -0500
Subject: [PATCH 5/5] dunqing's suggestion for simplification

---
 .../src/es2018/object_rest_spread.rs          | 33 +++++++++----------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/crates/oxc_transformer/src/es2018/object_rest_spread.rs b/crates/oxc_transformer/src/es2018/object_rest_spread.rs
index 59111323864c4..ce93354ce32b1 100644
--- a/crates/oxc_transformer/src/es2018/object_rest_spread.rs
+++ b/crates/oxc_transformer/src/es2018/object_rest_spread.rs
@@ -561,9 +561,24 @@ impl<'a> ObjectRestSpread<'a, '_> {
     // Transform `(...x) => {}`.
     fn transform_arrow(arrow: &mut ArrowFunctionExpression<'a>, ctx: &mut TraverseCtx<'a>) {
         let scope_id = arrow.scope_id();
-        let mut replaced = false;
         for param in &mut arrow.params.items {
             if Self::has_nested_object_rest(&param.pattern) {
+                // `({ ...args }) => { args }`
+                if arrow.expression {
+                    arrow.expression = false;
+
+                    debug_assert!(arrow.body.statements.len() == 1);
+
+                    let Statement::ExpressionStatement(stmt) = arrow.body.statements.pop().unwrap()
+                    else {
+                        unreachable!(
+                            "`arrow.expression` is true, which means it has only one ExpressionStatement."
+                        );
+                    };
+                    let return_stmt =
+                        ctx.ast.statement_return(stmt.span, Some(stmt.unbox().expression));
+                    arrow.body.statements.push(return_stmt);
+                }
                 Self::replace_rest_element(
                     VariableDeclarationKind::Var,
                     &mut param.pattern,
@@ -571,22 +586,6 @@ impl<'a> ObjectRestSpread<'a, '_> {
                     scope_id,
                     ctx,
                 );
-                replaced = true;
-            }
-        }
-        if replaced && arrow.expression {
-            arrow.expression = false;
-            let expr_stmt = arrow
-                .body
-                .statements
-                .iter_mut()
-                .rev()
-                .find(|s| matches!(s, Statement::ExpressionStatement(_)));
-            if let Some(expr_stmt) = expr_stmt {
-                if let Statement::ExpressionStatement(inner_expr_stmt) = expr_stmt {
-                    let expression = Some(inner_expr_stmt.expression.take_in(ctx.ast));
-                    *expr_stmt = ctx.ast.statement_return(SPAN, expression);
-                }
             }
         }
     }