Fix IORuntimeBuilder failureReporter config on JS

core/js/src/main/scala/cats/effect/unsafe/IORuntimeBuilderPlatform.scala

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020-2023 Typelevel
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cats.effect.unsafe
+
+private[unsafe] abstract class IORuntimeBuilderPlatform { self: IORuntimeBuilder =>
+
+  protected def platformSpecificBuild: IORuntime = {
+    val defaultShutdown: () => Unit = () => ()
+    val (compute, computeShutdown) = customCompute.getOrElse(
+      (
+        IORuntime.createBatchingMacrotaskExecutor(reportFailure = failureReporter),
+        defaultShutdown
+      )
+    )
+    val (blocking, blockingShutdown) = customBlocking.getOrElse((compute, defaultShutdown))
+    val (scheduler, schedulerShutdown) =
+      customScheduler.getOrElse((IORuntime.defaultScheduler, defaultShutdown))
+    val shutdown = () => {
+      computeShutdown()
+      blockingShutdown()
+      schedulerShutdown()
+      extraShutdownHooks.reverse.foreach(_())
+    }
+    val runtimeConfig = customConfig.getOrElse(IORuntimeConfig())
+
+    IORuntime.apply(
+      computeTransform(compute),
+      blockingTransform(blocking),
+      scheduler,
+      shutdown,
+      runtimeConfig
+    )
+  }
+
+}

tests/shared/src/test/scala/cats/effect/unsafe/IORuntimeBuilderSpec.scala

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2020-2023 Typelevel
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cats.effect
+package unsafe
+
+class IORuntimeBuilderSpec extends BaseSpec with DetectPlatform {
+
+  "IORuntimeBuilder" should {
+    if (isNative) "configure the failure reporter" in pending
+    else
+      "configure the failure reporter" in {
+        var invoked = false
+        val rt = IORuntime.builder().setFailureReporter(_ => invoked = true).build()
+        rt.compute.reportFailure(new Exception)
+        invoked must beTrue
+      }
+  }
+
+}