WIP - add extractor, generate snippet_data

node_modules/relay-runtime/lib/ConvertToExecuteFunction.js

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ *  strict-local
+ * @format
+ */
+'use strict';
+
+/**
+ * Converts a FetchFunction into an ExecuteFunction for use by RelayNetwork.
+ */
+function convertFetch(fn) {
+  return function fetch(request, variables, cacheConfig, uploadables) {
+    var result = fn(request, variables, cacheConfig, uploadables); // Note: We allow FetchFunction to directly return Error to indicate
+    // a failure to fetch. To avoid handling this special case throughout the
+    // Relay codebase, it is explicitly handled here.
+
+    if (result instanceof Error) {
+      return require("./RelayObservable").create(function (sink) {
+        return sink.error(result);
+      });
+    }
+
+    return require("./RelayObservable").from(result);
+  };
+}
+/**
+ * Converts a SubscribeFunction into an ExecuteFunction for use by RelayNetwork.
+ */
+
+
+function convertSubscribe(fn) {
+  return function subscribe(operation, variables, cacheConfig) {
+    return require("./RelayObservable").fromLegacy(function (observer) {
+      return fn(operation, variables, cacheConfig, observer);
+    });
+  };
+}
+
+module.exports = {
+  convertFetch: convertFetch,
+  convertSubscribe: convertSubscribe
+};