Merge pull request #8 from acro5piano/master

fix: support TypeScript's isolated modules

Author: robertrossmann

src/delegate.ts

@@ -49,6 +49,6 @@ interface Delegate<Runtime> {
   logError?(error: Error): void
 }
 
-export {
+export type {
   Delegate,
 }

src/index.ts

@@ -82,7 +82,10 @@ function cleanup(handler: (signal: SignalOrExitCode) => Promise<void>): void {
   process.removeListener('beforeExit', handler)
 }
 
+export type {
+  Delegate,
+}
+
 export {
   heimdall,
-  Delegate,
 }