hygiene
swc_ecma_transforms_base: - `hygiene`: Handle decl-ref conflict. (#2211)
swc_ecma_parser: - Fix panic from span assertion. (#2040) swc_ecma_transforms_compat: - Fix handling of `await for`. (#1918) swc_ecma_transforms_base: - Allow using decorator metadata even if `reflect-metadata` is not imported. (#1362)
swc_ecma_transforms_compat: - `class_properties`: Do not create iife if possible. (#1660)
swc_ecma_transforms_proposal: - Detect decorators in typescript parameter properties. (#1456) swc: - Add tests for #1362. (#1362)