{
  "title": "Dev Server options",
  "type": "object",
  "definitions": {
    "AllowedHosts": {
      "anyOf": [
        {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/definitions/AllowedHostsItem"
          }
        },
        {
          "enum": ["auto", "all"]
        },
        {
          "$ref": "#/definitions/AllowedHostsItem"
        }
      ],
      "description": "Allows to enumerate the hosts from which access to the dev server are allowed (useful when you are proxying dev server, by default is 'auto').",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverallowedhosts"
    },
    "AllowedHostsItem": {
      "type": "string",
      "minLength": 1
    },
    "Bonjour": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "object",
          "description": "Options for bonjour.",
          "link": "https://github.com/watson/bonjour#initializing"
        }
      ],
      "description": "Allows to broadcasts dev server via ZeroConf networking on start.",
      "link": " https://webpack.js.org/configuration/dev-server/#devserverbonjour",
      "cli": {
        "negatedDescription": "Disallows to broadcasts dev server via ZeroConf networking on start."
      }
    },
    "Client": {
      "description": "Allows to specify options for client script in the browser or disable client script.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverclient",
      "anyOf": [
        {
          "enum": [false]
        },
        {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "logging": {
              "$ref": "#/definitions/ClientLogging"
            },
            "overlay": {
              "$ref": "#/definitions/ClientOverlay"
            },
            "progress": {
              "$ref": "#/definitions/ClientProgress"
            },
            "reconnect": {
              "$ref": "#/definitions/ClientReconnect"
            },
            "webSocketTransport": {
              "$ref": "#/definitions/ClientWebSocketTransport"
            },
            "webSocketURL": {
              "$ref": "#/definitions/ClientWebSocketURL"
            }
          }
        }
      ]
    },
    "ClientLogging": {
      "enum": ["none", "error", "warn", "info", "log", "verbose"],
      "description": "Allows to set log level in the browser.",
      "link": "https://webpack.js.org/configuration/dev-server/#logging"
    },
    "ClientOverlay": {
      "anyOf": [
        {
          "description": "Enables a full-screen overlay in the browser when there are compiler errors or warnings.",
          "link": "https://webpack.js.org/configuration/dev-server/#overlay",
          "type": "boolean",
          "cli": {
            "negatedDescription": "Disables a full-screen overlay in the browser when there are compiler errors or warnings."
          }
        },
        {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "errors": {
              "description": "Enables a full-screen overlay in the browser when there are compiler errors.",
              "type": "boolean"
            },
            "warnings": {
              "description": "Enables a full-screen overlay in the browser when there are compiler warnings.",
              "type": "boolean"
            }
          }
        }
      ]
    },
    "ClientProgress": {
      "description": "Prints compilation progress in percentage in the browser.",
      "link": "https://webpack.js.org/configuration/dev-server/#progress",
      "type": "boolean",
      "cli": {
        "negatedDescription": "Does not print compilation progress in percentage in the browser."
      }
    },
    "ClientReconnect": {
      "description": "Tells dev-server the number of times it should try to reconnect the client.",
      "link": "https://webpack.js.org/configuration/dev-server/#reconnect",
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "number",
          "minimum": 0
        }
      ],
      "cli": {
        "negatedDescription": "Tells dev-server to not to try to connect the client."
      }
    },
    "ClientWebSocketTransport": {
      "anyOf": [
        {
          "$ref": "#/definitions/ClientWebSocketTransportEnum"
        },
        {
          "$ref": "#/definitions/ClientWebSocketTransportString"
        }
      ],
      "description": "Allows to set custom web socket transport to communicate with dev server.",
      "link": "https://webpack.js.org/configuration/dev-server/#websockettransport"
    },
    "ClientWebSocketTransportEnum": {
      "enum": ["sockjs", "ws"]
    },
    "ClientWebSocketTransportString": {
      "type": "string",
      "minLength": 1
    },
    "ClientWebSocketURL": {
      "description": "Allows to specify URL to web socket server (useful when you're proxying dev server and client script does not always know where to connect to).",
      "link": "https://webpack.js.org/configuration/dev-server/#websocketurl",
      "anyOf": [
        {
          "type": "string",
          "minLength": 1
        },
        {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "hostname": {
              "description": "Tells clients connected to devServer to use the provided hostname.",
              "type": "string",
              "minLength": 1
            },
            "pathname": {
              "description": "Tells clients connected to devServer to use the provided path to connect.",
              "type": "string"
            },
            "password": {
              "description": "Tells clients connected to devServer to use the provided password to authenticate.",
              "type": "string"
            },
            "port": {
              "description": "Tells clients connected to devServer to use the provided port.",
              "anyOf": [
                {
                  "type": "number"
                },
                {
                  "type": "string",
                  "minLength": 1
                }
              ]
            },
            "protocol": {
              "description": "Tells clients connected to devServer to use the provided protocol.",
              "anyOf": [
                {
                  "enum": ["auto"]
                },
                {
                  "type": "string",
                  "minLength": 1
                }
              ]
            },
            "username": {
              "description": "Tells clients connected to devServer to use the provided username to authenticate.",
              "type": "string"
            }
          }
        }
      ]
    },
    "Compress": {
      "type": "boolean",
      "description": "Enables gzip compression for everything served.",
      "link": "https://webpack.js.org/configuration/dev-server/#devservercompress",
      "cli": {
        "negatedDescription": "Disables gzip compression for everything served."
      }
    },
    "DevMiddleware": {
      "description": "Provide options to 'webpack-dev-middleware' which handles webpack assets.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverdevmiddleware",
      "type": "object",
      "additionalProperties": true
    },
    "HTTP2": {
      "type": "boolean",
      "description": "Allows to serve over HTTP/2 using SPDY. Deprecated, use the `server` option.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverhttp2",
      "cli": {
        "negatedDescription": "Does not serve over HTTP/2 using SPDY."
      }
    },
    "HTTPS": {
      "anyOf": [
        {
          "type": "boolean",
          "cli": {
            "negatedDescription": "Disallows to configure the server's listening socket for TLS (by default, dev server will be served over HTTP)."
          }
        },
        {
          "type": "object",
          "additionalProperties": true,
          "properties": {
            "passphrase": {
              "type": "string",
              "description": "Passphrase for a pfx file. Deprecated, use the `server.options.passphrase` option."
            },
            "requestCert": {
              "type": "boolean",
              "description": "Request for an SSL certificate. Deprecated, use the `server.options.requestCert` option.",
              "cli": {
                "negatedDescription": "Does not request for an SSL certificate."
              }
            },
            "ca": {
              "anyOf": [
                {
                  "type": "array",
                  "items": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "instanceof": "Buffer"
                      }
                    ]
                  }
                },
                {
                  "type": "string"
                },
                {
                  "instanceof": "Buffer"
                }
              ],
              "description": "Path to an SSL CA certificate or content of an SSL CA certificate. Deprecated, use the `server.options.ca` option."
            },
            "cacert": {
              "anyOf": [
                {
                  "type": "array",
                  "items": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "instanceof": "Buffer"
                      }
                    ]
                  }
                },
                {
                  "type": "string"
                },
                {
                  "instanceof": "Buffer"
                }
              ],
              "description": "Path to an SSL CA certificate or content of an SSL CA certificate. Deprecated, use the `server.options.ca` option."
            },
            "cert": {
              "anyOf": [
                {
                  "type": "array",
                  "items": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "instanceof": "Buffer"
                      }
                    ]
                  }
                },
                {
                  "type": "string"
                },
                {
                  "instanceof": "Buffer"
                }
              ],
              "description": "Path to an SSL certificate or content of an SSL certificate. Deprecated, use the `server.options.cert` option."
            },
            "crl": {
              "anyOf": [
                {
                  "type": "array",
                  "items": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "instanceof": "Buffer"
                      }
                    ]
                  }
                },
                {
                  "type": "string"
                },
                {
                  "instanceof": "Buffer"
                }
              ],
              "description": "Path to PEM formatted CRLs (Certificate Revocation Lists) or content of PEM formatted CRLs (Certificate Revocation Lists). Deprecated, use the `server.options.crl` option."
            },
            "key": {
              "anyOf": [
                {
                  "type": "array",
                  "items": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "instanceof": "Buffer"
                      },
                      {
                        "type": "object",
                        "additionalProperties": true
                      }
                    ]
                  }
                },
                {
                  "type": "string"
                },
                {
                  "instanceof": "Buffer"
                }
              ],
              "description": "Path to an SSL key or content of an SSL key. Deprecated, use the `server.options.key` option."
            },
            "pfx": {
              "anyOf": [
                {
                  "type": "array",
                  "items": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "instanceof": "Buffer"
                      },
                      {
                        "type": "object",
                        "additionalProperties": true
                      }
                    ]
                  }
                },
                {
                  "type": "string"
                },
                {
                  "instanceof": "Buffer"
                }
              ],
              "description": "Path to an SSL pfx file or content of an SSL pfx file. Deprecated, use the `server.options.pfx` option."
            }
          }
        }
      ],
      "description": "Allows to configure the server's listening socket for TLS (by default, dev server will be served over HTTP). Deprecated, use the `server` option.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverhttps"
    },
    "HeaderObject": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "key": {
          "description": "key of header.",
          "type": "string"
        },
        "value": {
          "description": "value of header.",
          "type": "string"
        }
      },
      "cli": {
        "exclude": true
      }
    },
    "Headers": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "$ref": "#/definitions/HeaderObject"
          },
          "minItems": 1
        },
        {
          "type": "object"
        },
        {
          "instanceof": "Function"
        }
      ],
      "description": "Allows to set custom headers on response.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverheaders"
    },
    "HistoryApiFallback": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "type": "object",
          "description": "Options for `historyApiFallback`.",
          "link": "https://github.com/bripkens/connect-history-api-fallback#options"
        }
      ],
      "description": "Allows to proxy requests through a specified index page (by default 'index.html'), useful for Single Page Applications that utilise the HTML5 History API.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverhistoryapifallback"
    },
    "Host": {
      "description": "Allows to specify a hostname to use.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverhost",
      "anyOf": [
        {
          "enum": ["local-ip", "local-ipv4", "local-ipv6"]
        },
        {
          "type": "string",
          "minLength": 1
        }
      ]
    },
    "Hot": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "enum": ["only"]
        }
      ],
      "description": "Enables Hot Module Replacement.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverhot",
      "cli": {
        "negatedDescription": "Disables Hot Module Replacement."
      }
    },
    "IPC": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1
        },
        {
          "type": "boolean",
          "enum": [true]
        }
      ],
      "description": "Listen to a unix socket.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserveripc"
    },
    "LiveReload": {
      "type": "boolean",
      "description": "Enables reload/refresh the page(s) when file changes are detected (enabled by default).",
      "cli": {
        "negatedDescription": "Disables reload/refresh the page(s) when file changes are detected (enabled by default)."
      },
      "link": "https://webpack.js.org/configuration/dev-server/#devserverlivereload"
    },
    "MagicHTML": {
      "type": "boolean",
      "description": "Tells dev-server whether to enable magic HTML routes (routes corresponding to your webpack output, for example '/main' for 'main.js').",
      "cli": {
        "negatedDescription": "Disables magic HTML routes (routes corresponding to your webpack output, for example '/main' for 'main.js')."
      },
      "link": "https://webpack.js.org/configuration/dev-server/#devservermagichtml"
    },
    "OnAfterSetupMiddleware": {
      "instanceof": "Function",
      "description": "Provides the ability to execute a custom function and apply custom middleware(s) after all other middlewares. Deprecated: please use the 'setupMiddlewares' option.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserveronaftersetupmiddleware"
    },
    "OnBeforeSetupMiddleware": {
      "instanceof": "Function",
      "description": "Provides the ability to execute a custom function and apply custom middleware(s) prior to all other middlewares. Deprecated: please use the 'setupMiddlewares' option.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserveronbeforesetupmiddleware"
    },
    "OnListening": {
      "instanceof": "Function",
      "description": "Provides the ability to execute a custom function when dev server starts listening.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserveronlistening"
    },
    "Open": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "anyOf": [
              {
                "$ref": "#/definitions/OpenString"
              },
              {
                "$ref": "#/definitions/OpenObject"
              }
            ]
          }
        },
        {
          "$ref": "#/definitions/OpenBoolean"
        },
        {
          "$ref": "#/definitions/OpenString"
        },
        {
          "$ref": "#/definitions/OpenObject"
        }
      ],
      "description": "Allows to configure dev server to open the browser(s) and page(s) after server had been started (set it to true to open your default browser).",
      "link": "https://webpack.js.org/configuration/dev-server/#devserveropen"
    },
    "OpenBoolean": {
      "type": "boolean",
      "cli": {
        "negatedDescription": "Does not open the default browser."
      }
    },
    "OpenObject": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "target": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            {
              "type": "string"
            }
          ],
          "description": "Opens specified page in browser."
        },
        "app": {
          "anyOf": [
            {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                "name": {
                  "anyOf": [
                    {
                      "type": "array",
                      "items": {
                        "type": "string",
                        "minLength": 1
                      },
                      "minItems": 1
                    },
                    {
                      "type": "string",
                      "minLength": 1
                    }
                  ]
                },
                "arguments": {
                  "items": {
                    "type": "string",
                    "minLength": 1
                  }
                }
              }
            },
            {
              "type": "string",
              "minLength": 1,
              "description": "Open specified browser.",
              "cli": {
                "description": "Open specified browser. Deprecated: please use '--open-app-name'."
              }
            }
          ],
          "description": "Open specified browser."
        }
      }
    },
    "OpenString": {
      "type": "string",
      "minLength": 1
    },
    "Port": {
      "anyOf": [
        {
          "type": "number",
          "minimum": 0,
          "maximum": 65535
        },
        {
          "type": "string",
          "minLength": 1
        },
        {
          "enum": ["auto"]
        }
      ],
      "description": "Allows to specify a port to use.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverport"
    },
    "Proxy": {
      "anyOf": [
        {
          "type": "object"
        },
        {
          "type": "array",
          "items": {
            "anyOf": [
              {
                "type": "object"
              },
              {
                "instanceof": "Function"
              }
            ]
          }
        }
      ],
      "description": "Allows to proxy requests, can be useful when you have a separate API backend development server and you want to send API requests on the same domain.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverproxy"
    },
    "Server": {
      "anyOf": [
        {
          "$ref": "#/definitions/ServerEnum"
        },
        {
          "$ref": "#/definitions/ServerString"
        },
        {
          "$ref": "#/definitions/ServerObject"
        }
      ],
      "link": "https://webpack.js.org/configuration/dev-server/#devserverserver",
      "description": "Allows to set server and options (by default 'http')."
    },
    "ServerType": {
      "enum": ["http", "https", "spdy"]
    },
    "ServerEnum": {
      "enum": ["http", "https", "spdy"],
      "cli": {
        "exclude": true
      }
    },
    "ServerString": {
      "type": "string",
      "minLength": 1,
      "cli": {
        "exclude": true
      }
    },
    "ServerObject": {
      "type": "object",
      "properties": {
        "type": {
          "anyOf": [
            {
              "$ref": "#/definitions/ServerType"
            },
            {
              "$ref": "#/definitions/ServerString"
            }
          ]
        },
        "options": {
          "$ref": "#/definitions/ServerOptions"
        }
      },
      "additionalProperties": false
    },
    "ServerOptions": {
      "type": "object",
      "additionalProperties": true,
      "properties": {
        "passphrase": {
          "type": "string",
          "description": "Passphrase for a pfx file."
        },
        "requestCert": {
          "type": "boolean",
          "description": "Request for an SSL certificate."
        },
        "ca": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "instanceof": "Buffer"
                  }
                ]
              }
            },
            {
              "type": "string"
            },
            {
              "instanceof": "Buffer"
            }
          ],
          "description": "Path to an SSL CA certificate or content of an SSL CA certificate."
        },
        "cacert": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "instanceof": "Buffer"
                  }
                ]
              }
            },
            {
              "type": "string"
            },
            {
              "instanceof": "Buffer"
            }
          ],
          "description": "Path to an SSL CA certificate or content of an SSL CA certificate. Deprecated, use the `server.options.ca` option."
        },
        "cert": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "instanceof": "Buffer"
                  }
                ]
              }
            },
            {
              "type": "string"
            },
            {
              "instanceof": "Buffer"
            }
          ],
          "description": "Path to an SSL certificate or content of an SSL certificate."
        },
        "crl": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "instanceof": "Buffer"
                  }
                ]
              }
            },
            {
              "type": "string"
            },
            {
              "instanceof": "Buffer"
            }
          ],
          "description": "Path to PEM formatted CRLs (Certificate Revocation Lists) or content of PEM formatted CRLs (Certificate Revocation Lists)."
        },
        "key": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "instanceof": "Buffer"
                  },
                  {
                    "type": "object",
                    "additionalProperties": true
                  }
                ]
              }
            },
            {
              "type": "string"
            },
            {
              "instanceof": "Buffer"
            }
          ],
          "description": "Path to an SSL key or content of an SSL key."
        },
        "pfx": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "anyOf": [
                  {
                    "type": "string"
                  },
                  {
                    "instanceof": "Buffer"
                  },
                  {
                    "type": "object",
                    "additionalProperties": true
                  }
                ]
              }
            },
            {
              "type": "string"
            },
            {
              "instanceof": "Buffer"
            }
          ],
          "description": "Path to an SSL pfx file or content of an SSL pfx file."
        }
      }
    },
    "SetupExitSignals": {
      "type": "boolean",
      "description": "Allows to close dev server and exit the process on SIGINT and SIGTERM signals (enabled by default for CLI).",
      "link": "https://webpack.js.org/configuration/dev-server/#devserversetupexitsignals",
      "cli": {
        "exclude": true
      }
    },
    "SetupMiddlewares": {
      "instanceof": "Function",
      "description": "Provides the ability to execute a custom function and apply custom middleware(s).",
      "link": "https://webpack.js.org/configuration/dev-server/#devserversetupmiddlewares"
    },
    "Static": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "anyOf": [
              {
                "$ref": "#/definitions/StaticString"
              },
              {
                "$ref": "#/definitions/StaticObject"
              }
            ]
          }
        },
        {
          "type": "boolean"
        },
        {
          "$ref": "#/definitions/StaticString"
        },
        {
          "$ref": "#/definitions/StaticObject"
        }
      ],
      "description": "Allows to configure options for serving static files from directory (by default 'public' directory).",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverstatic"
    },
    "StaticObject": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "directory": {
          "type": "string",
          "minLength": 1,
          "description": "Directory for static contents.",
          "link": "https://webpack.js.org/configuration/dev-server/#directory"
        },
        "staticOptions": {
          "type": "object",
          "link": "https://webpack.js.org/configuration/dev-server/#staticoptions",
          "additionalProperties": true
        },
        "publicPath": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "type": "string"
              },
              "minItems": 1
            },
            {
              "type": "string"
            }
          ],
          "description": "The static files will be available in the browser under this public path.",
          "link": "https://webpack.js.org/configuration/dev-server/#publicpath"
        },
        "serveIndex": {
          "anyOf": [
            {
              "type": "boolean"
            },
            {
              "type": "object",
              "additionalProperties": true
            }
          ],
          "description": "Tells dev server to use serveIndex middleware when enabled.",
          "cli": {
            "negatedDescription": "Does not tell dev server to use serveIndex middleware."
          },
          "link": "https://webpack.js.org/configuration/dev-server/#serveindex"
        },
        "watch": {
          "anyOf": [
            {
              "type": "boolean"
            },
            {
              "type": "object",
              "description": "Options for watch.",
              "link": "https://github.com/paulmillr/chokidar#api"
            }
          ],
          "description": "Watches for files in static content directory.",
          "cli": {
            "negatedDescription": "Does not watch for files in static content directory."
          },
          "link": "https://webpack.js.org/configuration/dev-server/#watch"
        }
      }
    },
    "StaticString": {
      "type": "string",
      "minLength": 1
    },
    "WatchFiles": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "anyOf": [
              {
                "$ref": "#/definitions/WatchFilesString"
              },
              {
                "$ref": "#/definitions/WatchFilesObject"
              }
            ]
          }
        },
        {
          "$ref": "#/definitions/WatchFilesString"
        },
        {
          "$ref": "#/definitions/WatchFilesObject"
        }
      ],
      "description": "Allows to configure list of globs/directories/files to watch for file changes.",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverwatchfiles"
    },
    "WatchFilesObject": {
      "cli": {
        "exclude": true
      },
      "type": "object",
      "properties": {
        "paths": {
          "anyOf": [
            {
              "type": "array",
              "items": {
                "type": "string",
                "minLength": 1
              }
            },
            {
              "type": "string",
              "minLength": 1
            }
          ],
          "description": "Path(s) of globs/directories/files to watch for file changes."
        },
        "options": {
          "type": "object",
          "description": "Configure advanced options for watching. See the chokidar documentation for the possible options.",
          "link": "https://github.com/paulmillr/chokidar#api",
          "additionalProperties": true
        }
      },
      "additionalProperties": false
    },
    "WatchFilesString": {
      "type": "string",
      "minLength": 1
    },
    "WebSocketServer": {
      "anyOf": [
        {
          "$ref": "#/definitions/WebSocketServerEnum"
        },
        {
          "$ref": "#/definitions/WebSocketServerString"
        },
        {
          "$ref": "#/definitions/WebSocketServerFunction"
        },
        {
          "$ref": "#/definitions/WebSocketServerObject"
        }
      ],
      "description": "Allows to set web socket server and options (by default 'ws').",
      "link": "https://webpack.js.org/configuration/dev-server/#devserverwebsocketserver"
    },
    "WebSocketServerType": {
      "enum": ["sockjs", "ws"]
    },
    "WebSocketServerEnum": {
      "anyOf": [
        {
          "enum": [false]
        },
        {
          "$ref": "#/definitions/WebSocketServerType"
        }
      ],
      "cli": {
        "description": "Deprecated: please use '--web-socket-server-type' option."
      }
    },
    "WebSocketServerFunction": {
      "instanceof": "Function"
    },
    "WebSocketServerObject": {
      "type": "object",
      "properties": {
        "type": {
          "anyOf": [
            {
              "$ref": "#/definitions/WebSocketServerType"
            },
            {
              "$ref": "#/definitions/WebSocketServerString"
            },
            {
              "$ref": "#/definitions/WebSocketServerFunction"
            }
          ]
        },
        "options": {
          "type": "object",
          "additionalProperties": true,
          "cli": {
            "exclude": true
          }
        }
      },
      "additionalProperties": false
    },
    "WebSocketServerString": {
      "type": "string",
      "minLength": 1
    }
  },
  "additionalProperties": false,
  "properties": {
    "allowedHosts": {
      "$ref": "#/definitions/AllowedHosts"
    },
    "bonjour": {
      "$ref": "#/definitions/Bonjour"
    },
    "client": {
      "$ref": "#/definitions/Client"
    },
    "compress": {
      "$ref": "#/definitions/Compress"
    },
    "devMiddleware": {
      "$ref": "#/definitions/DevMiddleware"
    },
    "headers": {
      "$ref": "#/definitions/Headers"
    },
    "historyApiFallback": {
      "$ref": "#/definitions/HistoryApiFallback"
    },
    "host": {
      "$ref": "#/definitions/Host"
    },
    "hot": {
      "$ref": "#/definitions/Hot"
    },
    "http2": {
      "$ref": "#/definitions/HTTP2"
    },
    "https": {
      "$ref": "#/definitions/HTTPS"
    },
    "ipc": {
      "$ref": "#/definitions/IPC"
    },
    "liveReload": {
      "$ref": "#/definitions/LiveReload"
    },
    "magicHtml": {
      "$ref": "#/definitions/MagicHTML"
    },
    "onAfterSetupMiddleware": {
      "$ref": "#/definitions/OnAfterSetupMiddleware"
    },
    "onBeforeSetupMiddleware": {
      "$ref": "#/definitions/OnBeforeSetupMiddleware"
    },
    "onListening": {
      "$ref": "#/definitions/OnListening"
    },
    "open": {
      "$ref": "#/definitions/Open"
    },
    "port": {
      "$ref": "#/definitions/Port"
    },
    "proxy": {
      "$ref": "#/definitions/Proxy"
    },
    "server": {
      "$ref": "#/definitions/Server"
    },
    "setupExitSignals": {
      "$ref": "#/definitions/SetupExitSignals"
    },
    "setupMiddlewares": {
      "$ref": "#/definitions/SetupMiddlewares"
    },
    "static": {
      "$ref": "#/definitions/Static"
    },
    "watchFiles": {
      "$ref": "#/definitions/WatchFiles"
    },
    "webSocketServer": {
      "$ref": "#/definitions/WebSocketServer"
    }
  }
}