flow like the river

BACK_BACK/node_modules/@elastic/transport/lib/Diagnostic.js

@@ -0,0 +1,58 @@
+"use strict";
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you 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.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.events = void 0;
+const events_1 = require("events");
+const errors_1 = require("./errors");
+var events;
+(function (events) {
+    events["RESPONSE"] = "response";
+    events["REQUEST"] = "request";
+    events["SNIFF"] = "sniff";
+    events["RESURRECT"] = "resurrect";
+    events["SERIALIZATION"] = "serialization";
+    events["DESERIALIZATION"] = "deserialization";
+})(events = exports.events || (exports.events = {}));
+class Diagnostic extends events_1.EventEmitter {
+    on(event, listener) {
+        assertSupportedEvent(event);
+        super.on(event, listener);
+        return this;
+    }
+    once(event, listener) {
+        assertSupportedEvent(event);
+        super.once(event, listener);
+        return this;
+    }
+    off(event, listener) {
+        assertSupportedEvent(event);
+        super.off(event, listener);
+        return this;
+    }
+}
+exports.default = Diagnostic;
+function assertSupportedEvent(event) {
+    if (!supportedEvents.includes(event)) {
+        throw new errors_1.ConfigurationError(`The event '${event}' is not supported.`);
+    }
+}
+// @ts-expect-error
+const supportedEvents = Object.keys(events).map(key => events[key]);
+//# sourceMappingURL=Diagnostic.js.map