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node_modules/react-native/ReactCommon/runtimeexecutor/ReactCommon/RuntimeExecutor.h

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <jsi/jsi.h>
+
+namespace facebook::react {
+
+/*
+ * Takes a function and calls it with a reference to a Runtime. The function
+ * will be called when it is safe to do so (i.e. it ensures non-concurrent
+ * access) and may be invoked asynchronously, depending on the implementation.
+ * If you need to access a Runtime, it's encouraged to use a RuntimeExecutor
+ * instead of storing a pointer to the Runtime itself, which makes it more
+ * difficult to ensure that the Runtime is being accessed safely.
+ */
+using RuntimeExecutor = std::function<void(std::function<void(jsi::Runtime &runtime)> &&callback)>;
+
+} // namespace facebook::react