Conexio amb la api

node_modules/webpack-dev-server/lib/utils/getSocketServerImplementation.js

@@ -0,0 +1,42 @@
+'use strict';
+
+function getSocketServerImplementation(options) {
+  let ServerImplementation;
+  let serverImplFound = true;
+  switch (typeof options.transportMode.server) {
+    case 'string':
+      // could be 'sockjs', in the future 'ws', or a path that should be required
+      if (options.transportMode.server === 'sockjs') {
+        ServerImplementation = require('../servers/SockJSServer');
+      } else if (options.transportMode.server === 'ws') {
+        ServerImplementation = require('../servers/WebsocketServer');
+      } else {
+        try {
+          // eslint-disable-next-line import/no-dynamic-require
+          ServerImplementation = require(options.transportMode.server);
+        } catch (e) {
+          serverImplFound = false;
+        }
+      }
+      break;
+    case 'function':
+      // potentially do more checks here to confirm that the user implemented this properlly
+      // since errors could be difficult to understand
+      ServerImplementation = options.transportMode.server;
+      break;
+    default:
+      serverImplFound = false;
+  }
+
+  if (!serverImplFound) {
+    throw new Error(
+      "transportMode.server must be a string denoting a default implementation (e.g. 'sockjs', 'ws'), a full path to " +
+        'a JS file which exports a class extending BaseServer (webpack-dev-server/lib/servers/BaseServer) ' +
+        'via require.resolve(...), or the class itself which extends BaseServer'
+    );
+  }
+
+  return ServerImplementation;
+}
+
+module.exports = getSocketServerImplementation;