diff --git a/src/transpilers/swc.ts b/src/transpilers/swc.ts
index ea41d534c..1a15ac6e0 100644
--- a/src/transpilers/swc.ts
+++ b/src/transpilers/swc.ts
@@ -225,7 +225,7 @@ export function createSwcOptions(
         parser: {
           syntax: 'typescript',
           tsx: isTsx,
-          decorators: experimentalDecorators,
+          decorators: !!experimentalDecorators,
           dynamicImport: true,
           importAssertions: true,
         } as swcWasm.TsParserConfig,