feat(transformer/class-properties): transform ChainExpression (#7575)

Fully support transforming ChainExpression in class properties. Our implementation has some differences in execution order compared to Babel, but we have passed all execution-related tests.
oxc-project · Dec 4, 2024 · c793d71 · c793d71
1 parent bd9d38a
commit c793d71
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diff --git a/crates/oxc_transformer/src/es2022/class_properties/mod.rs b/crates/oxc_transformer/src/es2022/class_properties/mod.rs
@@ -276,9 +276,15 @@ impl<'a, 'ctx> Traverse<'a> for ClassProperties<'a, 'ctx> {
             }
             // `object?.#prop`
             Expression::ChainExpression(_) => {
-                // TODO: `transform_chain_expression` is no-op at present
                 self.transform_chain_expression(expr, ctx);
             }
+            // `delete object?.#prop.xyz`
+            Expression::UnaryExpression(unary)
+                if unary.operator == UnaryOperator::Delete
+                    && matches!(unary.argument, Expression::ChainExpression(_)) =>
+            {
+                self.transform_unary_expression(expr, ctx);
+            }
             // "object.#prop`xyz`"
             Expression::TaggedTemplateExpression(_) => {
                 // TODO: `transform_tagged_template_expression` is no-op at present