test: properly close directory handle

src/jsTest/kotlin/it/krzeminski/githubactionstyping/AjvSchemaValidationTest.kt

@@ -13,6 +13,7 @@ import io.kotest.matchers.should
 import io.kotest.matchers.shouldNot
 import io.kotest.mpp.env
 import node.buffer.BufferEncoding.Companion.utf8
+import node.fs.Dir
 import node.fs.exists
 import node.fs.existsSync
 import node.fs.opendir
@@ -38,7 +39,7 @@ class AjvSchemaValidationTest : FunSpec({
         withClue("catalogDir should be a non-empty directory") {
             exists(catalogDir).shouldBeTrue()
             stat(catalogDir).isDirectory().shouldBeTrue()
-            opendir(catalogDir).read().await().shouldNotBeNull()
+            opendir(catalogDir).use { it.read().await().shouldNotBeNull() }
         }
 
         validate = Ajv(AjvOptions(strict = true)).compile(
@@ -98,3 +99,25 @@ private suspend fun String.shouldNotBeValid(): String {
     readFile(path.join(badDir, this), utf8) shouldNot beValid()
     return this
 }
+
+private inline fun <R> Dir.use(block: (Dir) -> R): R {
+    var exception: Throwable? = null
+    try {
+        return block(this)
+    } catch (e: Throwable) {
+        exception = e
+        throw e
+    } finally {
+        this.closeFinally(exception)
+    }
+}
+
+private fun Dir.closeFinally(cause: Throwable?): Unit = when {
+    cause == null -> closeSync()
+    else ->
+        try {
+            closeSync()
+        } catch (closeException: Throwable) {
+            cause.addSuppressed(closeException)
+        }
+}