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app_vue/node_modules/webpack-dev-server/client/socket.js

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+/* global __webpack_dev_server_client__ */
+
+import WebSocketClient from "./clients/WebSocketClient.js";
+import { log } from "./utils/log.js";
+
+// this WebsocketClient is here as a default fallback, in case the client is not injected
+/* eslint-disable camelcase */
+var Client =
+// eslint-disable-next-line no-nested-ternary
+typeof __webpack_dev_server_client__ !== "undefined" ? typeof __webpack_dev_server_client__.default !== "undefined" ? __webpack_dev_server_client__.default : __webpack_dev_server_client__ : WebSocketClient;
+/* eslint-enable camelcase */
+
+var retries = 0;
+var maxRetries = 10;
+
+// Initialized client is exported so external consumers can utilize the same instance
+// It is mutable to enforce singleton
+// eslint-disable-next-line import/no-mutable-exports
+export var client = null;
+
+/**
+ * @param {string} url
+ * @param {{ [handler: string]: (data?: any, params?: any) => any }} handlers
+ * @param {number} [reconnect]
+ */
+var socket = function initSocket(url, handlers, reconnect) {
+  client = new Client(url);
+  client.onOpen(function () {
+    retries = 0;
+    if (typeof reconnect !== "undefined") {
+      maxRetries = reconnect;
+    }
+  });
+  client.onClose(function () {
+    if (retries === 0) {
+      handlers.close();
+    }
+
+    // Try to reconnect.
+    client = null;
+
+    // After 10 retries stop trying, to prevent logspam.
+    if (retries < maxRetries) {
+      // Exponentially increase timeout to reconnect.
+      // Respectfully copied from the package `got`.
+      // eslint-disable-next-line no-restricted-properties
+      var retryInMs = 1000 * Math.pow(2, retries) + Math.random() * 100;
+      retries += 1;
+      log.info("Trying to reconnect...");
+      setTimeout(function () {
+        socket(url, handlers, reconnect);
+      }, retryInMs);
+    }
+  });
+  client.onMessage(
+  /**
+   * @param {any} data
+   */
+  function (data) {
+    var message = JSON.parse(data);
+    if (handlers[message.type]) {
+      handlers[message.type](message.data, message.params);
+    }
+  });
+};
+export default socket;