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Server.js
"use strict";
const os = require("os");
const path = require("path");
const url = require("url");
const util = require("util");
const fs = require("graceful-fs");
const ipaddr = require("ipaddr.js");
const defaultGateway = require("default-gateway");
const express = require("express");
const { validate } = require("schema-utils");
const schema = require("./options.json");
/** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
/** @typedef {import("webpack").Compiler} Compiler */
/** @typedef {import("webpack").MultiCompiler} MultiCompiler */
/** @typedef {import("webpack").Configuration} WebpackConfiguration */
/** @typedef {import("webpack").StatsOptions} StatsOptions */
/** @typedef {import("webpack").StatsCompilation} StatsCompilation */
/** @typedef {import("webpack").Stats} Stats */
/** @typedef {import("webpack").MultiStats} MultiStats */
/** @typedef {import("os").NetworkInterfaceInfo} NetworkInterfaceInfo */
/** @typedef {import("express").Request} Request */
/** @typedef {import("express").Response} Response */
/** @typedef {import("express").NextFunction} NextFunction */
/** @typedef {import("express").RequestHandler} ExpressRequestHandler */
/** @typedef {import("express").ErrorRequestHandler} ExpressErrorRequestHandler */
/** @typedef {import("chokidar").WatchOptions} WatchOptions */
/** @typedef {import("chokidar").FSWatcher} FSWatcher */
/** @typedef {import("connect-history-api-fallback").Options} ConnectHistoryApiFallbackOptions */
/** @typedef {import("bonjour-service").Bonjour} Bonjour */
/** @typedef {import("bonjour-service").Service} BonjourOptions */
/** @typedef {import("http-proxy-middleware").RequestHandler} RequestHandler */
/** @typedef {import("http-proxy-middleware").Options} HttpProxyMiddlewareOptions */
/** @typedef {import("http-proxy-middleware").Filter} HttpProxyMiddlewareOptionsFilter */
/** @typedef {import("serve-index").Options} ServeIndexOptions */
/** @typedef {import("serve-static").ServeStaticOptions} ServeStaticOptions */
/** @typedef {import("ipaddr.js").IPv4} IPv4 */
/** @typedef {import("ipaddr.js").IPv6} IPv6 */
/** @typedef {import("net").Socket} Socket */
/** @typedef {import("http").IncomingMessage} IncomingMessage */
/** @typedef {import("open").Options} OpenOptions */
/** @typedef {import("https").ServerOptions & { spdy?: { plain?: boolean | undefined, ssl?: boolean | undefined, 'x-forwarded-for'?: string | undefined, protocol?: string | undefined, protocols?: string[] | undefined }}} ServerOptions */
/**
* @template Request, Response
* @typedef {import("webpack-dev-middleware").Options<Request, Response>} DevMiddlewareOptions
*/
/**
* @template Request, Response
* @typedef {import("webpack-dev-middleware").Context<Request, Response>} DevMiddlewareContext
*/
/**
* @typedef {"local-ip" | "local-ipv4" | "local-ipv6" | string} Host
*/
/**
* @typedef {number | string | "auto"} Port
*/
/**
* @typedef {Object} WatchFiles
* @property {string | string[]} paths
* @property {WatchOptions & { aggregateTimeout?: number, ignored?: WatchOptions["ignored"], poll?: number | boolean }} [options]
*/
/**
* @typedef {Object} Static
* @property {string} [directory]
* @property {string | string[]} [publicPath]
* @property {boolean | ServeIndexOptions} [serveIndex]
* @property {ServeStaticOptions} [staticOptions]
* @property {boolean | WatchOptions & { aggregateTimeout?: number, ignored?: WatchOptions["ignored"], poll?: number | boolean }} [watch]
*/
/**
* @typedef {Object} NormalizedStatic
* @property {string} directory
* @property {string[]} publicPath
* @property {false | ServeIndexOptions} serveIndex
* @property {ServeStaticOptions} staticOptions
* @property {false | WatchOptions} watch
*/
/**
* @typedef {Object} ServerConfiguration
* @property {"http" | "https" | "spdy" | string} [type]
* @property {ServerOptions} [options]
*/
/**
* @typedef {Object} WebSocketServerConfiguration
* @property {"sockjs" | "ws" | string | Function} [type]
* @property {Record<string, any>} [options]
*/
/**
* @typedef {(import("ws").WebSocket | import("sockjs").Connection & { send: import("ws").WebSocket["send"], terminate: import("ws").WebSocket["terminate"], ping: import("ws").WebSocket["ping"] }) & { isAlive?: boolean }} ClientConnection
*/
/**
* @typedef {import("ws").WebSocketServer | import("sockjs").Server & { close: import("ws").WebSocketServer["close"] }} WebSocketServer
*/
/**
* @typedef {{ implementation: WebSocketServer, clients: ClientConnection[] }} WebSocketServerImplementation
*/
/**
* @callback ByPass
* @param {Request} req
* @param {Response} res
* @param {ProxyConfigArrayItem} proxyConfig
*/
/**
* @typedef {{ path?: HttpProxyMiddlewareOptionsFilter | undefined, context?: HttpProxyMiddlewareOptionsFilter | undefined } & { bypass?: ByPass } & HttpProxyMiddlewareOptions } ProxyConfigArrayItem
*/
/**
* @typedef {(ProxyConfigArrayItem | ((req?: Request | undefined, res?: Response | undefined, next?: NextFunction | undefined) => ProxyConfigArrayItem))[]} ProxyConfigArray
*/
/**
* @typedef {{ [url: string]: string | ProxyConfigArrayItem }} ProxyConfigMap
*/
/**
* @typedef {Object} OpenApp
* @property {string} [name]
* @property {string[]} [arguments]
*/
/**
* @typedef {Object} Open
* @property {string | string[] | OpenApp} [app]
* @property {string | string[]} [target]
*/
/**
* @typedef {Object} NormalizedOpen
* @property {string} target
* @property {import("open").Options} options
*/
/**
* @typedef {Object} WebSocketURL
* @property {string} [hostname]
* @property {string} [password]
* @property {string} [pathname]
* @property {number | string} [port]
* @property {string} [protocol]
* @property {string} [username]
*/
/**
* @typedef {Object} ClientConfiguration
* @property {"log" | "info" | "warn" | "error" | "none" | "verbose"} [logging]
* @property {boolean | { warnings?: boolean, errors?: boolean }} [overlay]
* @property {boolean} [progress]
* @property {boolean | number} [reconnect]
* @property {"ws" | "sockjs" | string} [webSocketTransport]
* @property {string | WebSocketURL} [webSocketURL]
*/
/**
* @typedef {Array<{ key: string; value: string }> | Record<string, string | string[]>} Headers
*/
/**
* @typedef {{ name?: string, path?: string, middleware: ExpressRequestHandler | ExpressErrorRequestHandler } | ExpressRequestHandler | ExpressErrorRequestHandler} Middleware
*/
/**
* @typedef {Object} Configuration
* @property {boolean | string} [ipc]
* @property {Host} [host]
* @property {Port} [port]
* @property {boolean | "only"} [hot]
* @property {boolean} [liveReload]
* @property {DevMiddlewareOptions<Request, Response>} [devMiddleware]
* @property {boolean} [compress]
* @property {boolean} [magicHtml]
* @property {"auto" | "all" | string | string[]} [allowedHosts]
* @property {boolean | ConnectHistoryApiFallbackOptions} [historyApiFallback]
* @property {boolean} [setupExitSignals]
* @property {boolean | Record<string, never> | BonjourOptions} [bonjour]
* @property {string | string[] | WatchFiles | Array<string | WatchFiles>} [watchFiles]
* @property {boolean | string | Static | Array<string | Static>} [static]
* @property {boolean | ServerOptions} [https]
* @property {boolean} [http2]
* @property {"http" | "https" | "spdy" | string | ServerConfiguration} [server]
* @property {boolean | "sockjs" | "ws" | string | WebSocketServerConfiguration} [webSocketServer]
* @property {ProxyConfigMap | ProxyConfigArrayItem | ProxyConfigArray} [proxy]
* @property {boolean | string | Open | Array<string | Open>} [open]
* @property {boolean} [setupExitSignals]
* @property {boolean | ClientConfiguration} [client]
* @property {Headers | ((req: Request, res: Response, context: DevMiddlewareContext<Request, Response>) => Headers)} [headers]
* @property {(devServer: Server) => void} [onAfterSetupMiddleware]
* @property {(devServer: Server) => void} [onBeforeSetupMiddleware]
* @property {(devServer: Server) => void} [onListening]
* @property {(middlewares: Middleware[], devServer: Server) => Middleware[]} [setupMiddlewares]
*/
if (!process.env.WEBPACK_SERVE) {
// TODO fix me in the next major release
// @ts-ignore
process.env.WEBPACK_SERVE = true;
}
class Server {
/**
* @param {Configuration | Compiler | MultiCompiler} options
* @param {Compiler | MultiCompiler | Configuration} compiler
*/
constructor(options = {}, compiler) {
// TODO: remove this after plugin support is published
if (/** @type {Compiler | MultiCompiler} */ (options).hooks) {
util.deprecate(
() => {},
"Using 'compiler' as the first argument is deprecated. Please use 'options' as the first argument and 'compiler' as the second argument.",
"DEP_WEBPACK_DEV_SERVER_CONSTRUCTOR"
)();
[options = {}, compiler] = [compiler, options];
}
validate(/** @type {Schema} */ (schema), options, {
name: "Dev Server",
baseDataPath: "options",
});
this.compiler = /** @type {Compiler | MultiCompiler} */ (compiler);
/**
* @type {ReturnType<Compiler["getInfrastructureLogger"]>}
* */
this.logger = this.compiler.getInfrastructureLogger("webpack-dev-server");
this.options = /** @type {Configuration} */ (options);
/**
* @type {FSWatcher[]}
*/
this.staticWatchers = [];
/**
* @private
* @type {{ name: string | symbol, listener: (...args: any[]) => void}[] }}
*/
this.listeners = [];
// Keep track of websocket proxies for external websocket upgrade.
/**
* @private
* @type {RequestHandler[]}
*/
this.webSocketProxies = [];
/**
* @type {Socket[]}
*/
this.sockets = [];
/**
* @private
* @type {string | undefined}
*/
// eslint-disable-next-line no-undefined
this.currentHash = undefined;
}
// TODO compatibility with webpack v4, remove it after drop
static get cli() {
return {
get getArguments() {
return () => require("../bin/cli-flags");
},
get processArguments() {
return require("../bin/process-arguments");
},
};
}
static get schema() {
return schema;
}
/**
* @private
* @returns {StatsOptions}
* @constructor
*/
static get DEFAULT_STATS() {
return {
all: false,
hash: true,
warnings: true,
errors: true,
errorDetails: false,
};
}
/**
* @param {string} URL
* @returns {boolean}
*/
static isAbsoluteURL(URL) {
// Don't match Windows paths `c:\`
if (/^[a-zA-Z]:\\/.test(URL)) {
return false;
}
// Scheme: https://tools.ietf.org/html/rfc3986#section-3.1
// Absolute URL: https://tools.ietf.org/html/rfc3986#section-4.3
return /^[a-zA-Z][a-zA-Z\d+\-.]*:/.test(URL);
}
/**
* @param {string} gateway
* @returns {string | undefined}
*/
static findIp(gateway) {
const gatewayIp = ipaddr.parse(gateway);
// Look for the matching interface in all local interfaces.
for (const addresses of Object.values(os.networkInterfaces())) {
for (const { cidr } of /** @type {NetworkInterfaceInfo[]} */ (
addresses
)) {
const net = ipaddr.parseCIDR(/** @type {string} */ (cidr));
if (
net[0] &&
net[0].kind() === gatewayIp.kind() &&
gatewayIp.match(net)
) {
return net[0].toString();
}
}
}
}
/**
* @param {"v4" | "v6"} family
* @returns {Promise<string | undefined>}
*/
static async internalIP(family) {
try {
const { gateway } = await defaultGateway[family]();
return Server.findIp(gateway);
} catch {
// ignore
}
}
/**
* @param {"v4" | "v6"} family
* @returns {string | undefined}
*/
static internalIPSync(family) {
try {
const { gateway } = defaultGateway[family].sync();
return Server.findIp(gateway);
} catch {
// ignore
}
}
/**
* @param {Host} hostname
* @returns {Promise<string>}
*/
static async getHostname(hostname) {
if (hostname === "local-ip") {
return (
(await Server.internalIP("v4")) ||
(await Server.internalIP("v6")) ||
"0.0.0.0"
);
} else if (hostname === "local-ipv4") {
return (await Server.internalIP("v4")) || "0.0.0.0";
} else if (hostname === "local-ipv6") {
return (await Server.internalIP("v6")) || "::";
}
return hostname;
}
/**
* @param {Port} port
* @param {string} host
* @returns {Promise<number | string>}
*/
static async getFreePort(port, host) {
if (typeof port !== "undefined" && port !== null && port !== "auto") {
return port;
}
const pRetry = require("p-retry");
const getPort = require("./getPort");
const basePort =
typeof process.env.WEBPACK_DEV_SERVER_BASE_PORT !== "undefined"
? parseInt(process.env.WEBPACK_DEV_SERVER_BASE_PORT, 10)
: 8080;
// Try to find unused port and listen on it for 3 times,
// if port is not specified in options.
const defaultPortRetry =
typeof process.env.WEBPACK_DEV_SERVER_PORT_RETRY !== "undefined"
? parseInt(process.env.WEBPACK_DEV_SERVER_PORT_RETRY, 10)
: 3;
return pRetry(() => getPort(basePort, host), {
retries: defaultPortRetry,
});
}
/**
* @returns {string}
*/
static findCacheDir() {
const cwd = process.cwd();
/**
* @type {string | undefined}
*/
let dir = cwd;
for (;;) {
try {
if (fs.statSync(path.join(dir, "package.json")).isFile()) break;
// eslint-disable-next-line no-empty
} catch (e) {}
const parent = path.dirname(dir);
if (dir === parent) {
// eslint-disable-next-line no-undefined
dir = undefined;
break;
}
dir = parent;
}
if (!dir) {
return path.resolve(cwd, ".cache/webpack-dev-server");
} else if (process.versions.pnp === "1") {
return path.resolve(dir, ".pnp/.cache/webpack-dev-server");
} else if (process.versions.pnp === "3") {
return path.resolve(dir, ".yarn/.cache/webpack-dev-server");
}
return path.resolve(dir, "node_modules/.cache/webpack-dev-server");
}
/**
* @private
* @param {Compiler} compiler
*/
addAdditionalEntries(compiler) {
/**
* @type {string[]}
*/
const additionalEntries = [];
const isWebTarget = compiler.options.externalsPresets
? compiler.options.externalsPresets.web
: [
"web",
"webworker",
"electron-preload",
"electron-renderer",
"node-webkit",
// eslint-disable-next-line no-undefined
undefined,
null,
].includes(/** @type {string} */ (compiler.options.target));
// TODO maybe empty empty client
if (this.options.client && isWebTarget) {
let webSocketURLStr = "";
if (this.options.webSocketServer) {
const webSocketURL =
/** @type {WebSocketURL} */
(
/** @type {ClientConfiguration} */
(this.options.client).webSocketURL
);
const webSocketServer =
/** @type {{ type: WebSocketServerConfiguration["type"], options: NonNullable<WebSocketServerConfiguration["options"]> }} */
(this.options.webSocketServer);
const searchParams = new URLSearchParams();
/** @type {string} */
let protocol;
// We are proxying dev server and need to specify custom `hostname`
if (typeof webSocketURL.protocol !== "undefined") {
protocol = webSocketURL.protocol;
} else {
protocol =
/** @type {ServerConfiguration} */
(this.options.server).type === "http" ? "ws:" : "wss:";
}
searchParams.set("protocol", protocol);
if (typeof webSocketURL.username !== "undefined") {
searchParams.set("username", webSocketURL.username);
}
if (typeof webSocketURL.password !== "undefined") {
searchParams.set("password", webSocketURL.password);
}
/** @type {string} */
let hostname;
// SockJS is not supported server mode, so `hostname` and `port` can't specified, let's ignore them
// TODO show warning about this
const isSockJSType = webSocketServer.type === "sockjs";
// We are proxying dev server and need to specify custom `hostname`
if (typeof webSocketURL.hostname !== "undefined") {
hostname = webSocketURL.hostname;
}
// Web socket server works on custom `hostname`, only for `ws` because `sock-js` is not support custom `hostname`
else if (
typeof webSocketServer.options.host !== "undefined" &&
!isSockJSType
) {
hostname = webSocketServer.options.host;
}
// The `host` option is specified
else if (typeof this.options.host !== "undefined") {
hostname = this.options.host;
}
// The `port` option is not specified
else {
hostname = "0.0.0.0";
}
searchParams.set("hostname", hostname);
/** @type {number | string} */
let port;
// We are proxying dev server and need to specify custom `port`
if (typeof webSocketURL.port !== "undefined") {
port = webSocketURL.port;
}
// Web socket server works on custom `port`, only for `ws` because `sock-js` is not support custom `port`
else if (
typeof webSocketServer.options.port !== "undefined" &&
!isSockJSType
) {
port = webSocketServer.options.port;
}
// The `port` option is specified
else if (typeof this.options.port === "number") {
port = this.options.port;
}
// The `port` option is specified using `string`
else if (
typeof this.options.port === "string" &&
this.options.port !== "auto"
) {
port = Number(this.options.port);
}
// The `port` option is not specified or set to `auto`
else {
port = "0";
}
searchParams.set("port", String(port));
/** @type {string} */
let pathname = "";
// We are proxying dev server and need to specify custom `pathname`
if (typeof webSocketURL.pathname !== "undefined") {
pathname = webSocketURL.pathname;
}
// Web socket server works on custom `path`
else if (
typeof webSocketServer.options.prefix !== "undefined" ||
typeof webSocketServer.options.path !== "undefined"
) {
pathname =
webSocketServer.options.prefix || webSocketServer.options.path;
}
searchParams.set("pathname", pathname);
const client = /** @type {ClientConfiguration} */ (this.options.client);
if (typeof client.logging !== "undefined") {
searchParams.set("logging", client.logging);
}
if (typeof client.progress !== "undefined") {
searchParams.set("progress", String(client.progress));
}
if (typeof client.overlay !== "undefined") {
searchParams.set(
"overlay",
typeof client.overlay === "boolean"
? String(client.overlay)
: JSON.stringify(client.overlay)
);
}
if (typeof client.reconnect !== "undefined") {
searchParams.set(
"reconnect",
typeof client.reconnect === "number"
? String(client.reconnect)
: "10"
);
}
if (typeof this.options.hot !== "undefined") {
searchParams.set("hot", String(this.options.hot));
}
if (typeof this.options.liveReload !== "undefined") {
searchParams.set("live-reload", String(this.options.liveReload));
}
webSocketURLStr = searchParams.toString();
}
additionalEntries.push(
`${require.resolve("../client/index.js")}?${webSocketURLStr}`
);
}
if (this.options.hot === "only") {
additionalEntries.push(require.resolve("webpack/hot/only-dev-server"));
} else if (this.options.hot) {
additionalEntries.push(require.resolve("webpack/hot/dev-server"));
}
const webpack = compiler.webpack || require("webpack");
// use a hook to add entries if available
if (typeof webpack.EntryPlugin !== "undefined") {
for (const additionalEntry of additionalEntries) {
new webpack.EntryPlugin(compiler.context, additionalEntry, {
// eslint-disable-next-line no-undefined
name: undefined,
}).apply(compiler);
}
}
// TODO remove after drop webpack v4 support
else {
/**
* prependEntry Method for webpack 4
* @param {any} originalEntry
* @param {any} newAdditionalEntries
* @returns {any}
*/
const prependEntry = (originalEntry, newAdditionalEntries) => {
if (typeof originalEntry === "function") {
return () =>
Promise.resolve(originalEntry()).then((entry) =>
prependEntry(entry, newAdditionalEntries)
);
}
if (
typeof originalEntry === "object" &&
!Array.isArray(originalEntry)
) {
/** @type {Object<string,string>} */
const clone = {};
Object.keys(originalEntry).forEach((key) => {
// entry[key] should be a string here
const entryDescription = originalEntry[key];
clone[key] = prependEntry(entryDescription, newAdditionalEntries);
});
return clone;
}
// in this case, entry is a string or an array.
// make sure that we do not add duplicates.
/** @type {any} */
const entriesClone = additionalEntries.slice(0);
[].concat(originalEntry).forEach((newEntry) => {
if (!entriesClone.includes(newEntry)) {
entriesClone.push(newEntry);
}
});
return entriesClone;
};
compiler.options.entry = prependEntry(
compiler.options.entry || "./src",
additionalEntries
);
compiler.hooks.entryOption.call(
/** @type {string} */ (compiler.options.context),
compiler.options.entry
);
}
}
/**
* @private
* @returns {Compiler["options"]}
*/
getCompilerOptions() {
if (
typeof (/** @type {MultiCompiler} */ (this.compiler).compilers) !==
"undefined"
) {
if (/** @type {MultiCompiler} */ (this.compiler).compilers.length === 1) {
return (
/** @type {MultiCompiler} */
(this.compiler).compilers[0].options
);
}
// Configuration with the `devServer` options
const compilerWithDevServer =
/** @type {MultiCompiler} */
(this.compiler).compilers.find((config) => config.options.devServer);
if (compilerWithDevServer) {
return compilerWithDevServer.options;
}
// Configuration with `web` preset
const compilerWithWebPreset =
/** @type {MultiCompiler} */
(this.compiler).compilers.find(
(config) =>
(config.options.externalsPresets &&
config.options.externalsPresets.web) ||
[
"web",
"webworker",
"electron-preload",
"electron-renderer",
"node-webkit",
// eslint-disable-next-line no-undefined
undefined,
null,
].includes(/** @type {string} */ (config.options.target))
);
if (compilerWithWebPreset) {
return compilerWithWebPreset.options;
}
// Fallback
return /** @type {MultiCompiler} */ (this.compiler).compilers[0].options;
}
return /** @type {Compiler} */ (this.compiler).options;
}
/**
* @private
* @returns {Promise<void>}
*/
async normalizeOptions() {
const { options } = this;
const compilerOptions = this.getCompilerOptions();
// TODO remove `{}` after drop webpack v4 support
const compilerWatchOptions = compilerOptions.watchOptions || {};
/**
* @param {WatchOptions & { aggregateTimeout?: number, ignored?: WatchOptions["ignored"], poll?: number | boolean }} watchOptions
* @returns {WatchOptions}
*/
const getWatchOptions = (watchOptions = {}) => {
const getPolling = () => {
if (typeof watchOptions.usePolling !== "undefined") {
return watchOptions.usePolling;
}
if (typeof watchOptions.poll !== "undefined") {
return Boolean(watchOptions.poll);
}
if (typeof compilerWatchOptions.poll !== "undefined") {
return Boolean(compilerWatchOptions.poll);
}
return false;
};
const getInterval = () => {
if (typeof watchOptions.interval !== "undefined") {
return watchOptions.interval;
}
if (typeof watchOptions.poll === "number") {
return watchOptions.poll;
}
if (typeof compilerWatchOptions.poll === "number") {
return compilerWatchOptions.poll;
}
};
const usePolling = getPolling();
const interval = getInterval();
const { poll, ...rest } = watchOptions;
return {
ignoreInitial: true,
persistent: true,
followSymlinks: false,
atomic: false,
alwaysStat: true,
ignorePermissionErrors: true,
// Respect options from compiler watchOptions
usePolling,
interval,
ignored: watchOptions.ignored,
// TODO: we respect these options for all watch options and allow developers to pass them to chokidar, but chokidar doesn't have these options maybe we need revisit that in future
...rest,
};
};
/**
* @param {string | Static | undefined} [optionsForStatic]
* @returns {NormalizedStatic}
*/
const getStaticItem = (optionsForStatic) => {
const getDefaultStaticOptions = () => {
return {
directory: path.join(process.cwd(), "public"),
staticOptions: {},
publicPath: ["/"],
serveIndex: { icons: true },
watch: getWatchOptions(),
};
};
/** @type {NormalizedStatic} */
let item;
if (typeof optionsForStatic === "undefined") {
item = getDefaultStaticOptions();
} else if (typeof optionsForStatic === "string") {
item = {
...getDefaultStaticOptions(),
directory: optionsForStatic,
};
} else {
const def = getDefaultStaticOptions();
item = {
directory:
typeof optionsForStatic.directory !== "undefined"
? optionsForStatic.directory
: def.directory,
// TODO: do merge in the next major release
staticOptions:
typeof optionsForStatic.staticOptions !== "undefined"
? optionsForStatic.staticOptions
: def.staticOptions,
publicPath:
// eslint-disable-next-line no-nested-ternary
typeof optionsForStatic.publicPath !== "undefined"
? Array.isArray(optionsForStatic.publicPath)
? optionsForStatic.publicPath
: [optionsForStatic.publicPath]
: def.publicPath,
// TODO: do merge in the next major release
serveIndex:
// eslint-disable-next-line no-nested-ternary
typeof optionsForStatic.serveIndex !== "undefined"
? typeof optionsForStatic.serveIndex === "boolean" &&
optionsForStatic.serveIndex
? def.serveIndex
: optionsForStatic.serveIndex
: def.serveIndex,
watch:
// eslint-disable-next-line no-nested-ternary
typeof optionsForStatic.watch !== "undefined"
? // eslint-disable-next-line no-nested-ternary
typeof optionsForStatic.watch === "boolean"
? optionsForStatic.watch
? def.watch
: false
: getWatchOptions(optionsForStatic.watch)
: def.watch,
};
}
if (Server.isAbsoluteURL(item.directory)) {
throw new Error("Using a URL as static.directory is not supported");
}
return item;
};
if (typeof options.allowedHosts === "undefined") {
// AllowedHosts allows some default hosts picked from `options.host` or `webSocketURL.hostname` and `localhost`
options.allowedHosts = "auto";
}
// We store allowedHosts as array when supplied as string
else if (
typeof options.allowedHosts === "string" &&
options.allowedHosts !== "auto" &&
options.allowedHosts !== "all"
) {
options.allowedHosts = [options.allowedHosts];
}
// CLI pass options as array, we should normalize them
else if (
Array.isArray(options.allowedHosts) &&
options.allowedHosts.includes("all")
) {
options.allowedHosts = "all";
}
if (typeof options.bonjour === "undefined") {
options.bonjour = false;
} else if (typeof options.bonjour === "boolean") {
options.bonjour = options.bonjour ? {} : false;
}
if (
typeof options.client === "undefined" ||
(typeof options.client === "object" && options.client !== null)
) {
if (!options.client) {
options.client = {};
}
if (typeof options.client.webSocketURL === "undefined") {
options.client.webSocketURL = {};
} else if (typeof options.client.webSocketURL === "string") {
const parsedURL = new URL(options.client.webSocketURL);
options.client.webSocketURL = {
protocol: parsedURL.protocol,
hostname: parsedURL.hostname,
port: parsedURL.port.length > 0 ? Number(parsedURL.port) : "",
pathname: parsedURL.pathname,
username: parsedURL.username,
password: parsedURL.password,
};
} else if (typeof options.client.webSocketURL.port === "string") {
options.client.webSocketURL.port = Number(
options.client.webSocketURL.port
);
}
// Enable client overlay by default
if (typeof options.client.overlay === "undefined") {
options.client.overlay = true;
} else if (typeof options.client.overlay !== "boolean") {
options.client.overlay = {
errors: true,
warnings: true,
...options.client.overlay,
};
}
if (typeof options.client.reconnect === "undefined") {
options.client.reconnect = 10;
} else if (options.client.reconnect === true) {
options.client.reconnect = Infinity;
} else if (options.client.reconnect === false) {
options.client.reconnect = 0;
}
// Respect infrastructureLogging.level
if (typeof options.client.logging === "undefined") {
options.client.logging = compilerOptions.infrastructureLogging
? compilerOptions.infrastructureLogging.level
: "info";
}
}
if (typeof options.compress === "undefined") {
options.compress = true;
}
if (typeof options.devMiddleware === "undefined") {
options.devMiddleware = {};
}
// No need to normalize `headers`
if (typeof options.historyApiFallback === "undefined") {
options.historyApiFallback = false;
} else if (
typeof options.historyApiFallback === "boolean" &&
options.historyApiFallback
) {
options.historyApiFallback = {};
}
// No need to normalize `host`
options.hot =
typeof options.hot === "boolean" || options.hot === "only"
? options.hot
: true;
const isHTTPs = Boolean(options.https);
const isSPDY = Boolean(options.http2);
if (isHTTPs) {
// TODO: remove in the next major release
util.deprecate(
() => {},
"'https' option is deprecated. Please use the 'server' option.",
"DEP_WEBPACK_DEV_SERVER_HTTPS"
)();
}
if (isSPDY) {
// TODO: remove in the next major release
util.deprecate(
() => {},
"'http2' option is deprecated. Please use the 'server' option.",
"DEP_WEBPACK_DEV_SERVER_HTTP2"
)();
}
options.server = {
type:
// eslint-disable-next-line no-nested-ternary
typeof options.server === "string"
? options.server
: // eslint-disable-next-line no-nested-ternary
typeof (options.server || {}).type === "string"
? /** @type {ServerConfiguration} */ (options.server).type || "http"
: // eslint-disable-next-line no-nested-ternary
isSPDY
? "spdy"
: isHTTPs
? "https"
: "http",
options: {
.../** @type {ServerOptions} */ (options.https),
.../** @type {ServerConfiguration} */ (options.server || {}).options,
},
};
if (
options.server.type === "spdy" &&
typeof (/** @type {ServerOptions} */ (options.server.options).spdy) ===
"undefined"
) {
/** @type {ServerOptions} */
(options.server.options).spdy = {
protocols: ["h2", "http/1.1"],
};
}
if (options.server.type === "https" || options.server.type === "spdy") {
if (
typeof (
/** @type {ServerOptions} */ (options.server.options).requestCert
) === "undefined"
) {
/** @type {ServerOptions} */
(options.server.options).requestCert = false;
}
const httpsProperties =
/** @type {Array<keyof ServerOptions>} */
(["cacert", "ca", "cert", "crl", "key", "pfx"]);
for (const property of httpsProperties) {
if (
typeof (
/** @type {ServerOptions} */ (options.server.options)[property]
) === "undefined"
) {
// eslint-disable-next-line no-continue
continue;
}
// @ts-ignore
if (property === "cacert") {
// TODO remove the `cacert` option in favor `ca` in the next major release
util.deprecate(
() => {},
"The 'cacert' option is deprecated. Please use the 'ca' option.",
"DEP_WEBPACK_DEV_SERVER_CACERT"
)();
}
/** @type {any} */
const value =
/** @type {ServerOptions} */
(options.server.options)[property];
/**
* @param {string | Buffer | undefined} item
* @returns {string | Buffer | undefined}
*/
const readFile = (item) => {
if (
Buffer.isBuffer(item) ||
(typeof item === "object" && item !== null && !Array.isArray(item))
) {
return item;
}
if (item) {
let stats = null;
try {
stats = fs.lstatSync(fs.realpathSync(item)).isFile();
} catch (error) {
// Ignore error
}
// It is file
return stats ? fs.readFileSync(item) : item;
}
};
/** @type {any} */
(options.server.options)[property] = Array.isArray(value)
? value.map((item) => readFile(item))
: readFile(value);
}
let fakeCert;
if (
!(/** @type {ServerOptions} */ (options.server.options).key) ||
/** @type {ServerOptions} */ (!options.server.options).cert
) {
const certificateDir = Server.findCacheDir();
const certificatePath = path.join(certificateDir, "server.pem");
let certificateExists;
try {
const certificate = await fs.promises.stat(certificatePath);
certificateExists = certificate.isFile();
} catch {
certificateExists = false;
}
if (certificateExists) {
const certificateTtl = 1000 * 60 * 60 * 24;
const certificateStat = await fs.promises.stat(certificatePath);
const now = Number(new Date());
// cert is more than 30 days old, kill it with fire
if ((now - Number(certificateStat.ctime)) / certificateTtl > 30) {
const { promisify } = require("util");
const rimraf = require("rimraf");
const del = promisify(rimraf);
this.logger.info(
"SSL certificate is more than 30 days old. Removing..."
);
await del(certificatePath);
certificateExists = false;
}
}
if (!certificateExists) {
this.logger.info("Generating SSL certificate...");
// @ts-ignore
const selfsigned = require("selfsigned");
const attributes = [{ name: "commonName", value: "localhost" }];
const pems = selfsigned.generate(attributes, {
algorithm: "sha256",
days: 30,
keySize: 2048,
extensions: [
{
name: "basicConstraints",
cA: true,
},
{
name: "keyUsage",
keyCertSign: true,
digitalSignature: true,
nonRepudiation: true,
keyEncipherment: true,
dataEncipherment: true,
},
{
name: "extKeyUsage",
serverAuth: true,
clientAuth: true,
codeSigning: true,
timeStamping: true,
},
{
name: "subjectAltName",
altNames: [
{
// type 2 is DNS
type: 2,
value: "localhost",
},
{
type: 2,
value: "localhost.localdomain",
},
{
type: 2,
value: "lvh.me",
},
{
type: 2,
value: "*.lvh.me",
},
{
type: 2,
value: "[::1]",
},
{
// type 7 is IP
type: 7,
ip: "127.0.0.1",
},
{
type: 7,
ip: "fe80::1",
},
],
},
],
});
await fs.promises.mkdir(certificateDir, { recursive: true });
await fs.promises.writeFile(
certificatePath,
pems.private + pems.cert,
{
encoding: "utf8",
}
);
}
fakeCert = await fs.promises.readFile(certificatePath);
this.logger.info(`SSL certificate: ${certificatePath}`);
}
if (
/** @type {ServerOptions & { cacert?: ServerOptions["ca"] }} */ (
options.server.options
).cacert
) {
if (/** @type {ServerOptions} */ (options.server.options).ca) {
this.logger.warn(
"Do not specify 'ca' and 'cacert' options together, the 'ca' option will be used."
);
} else {
/** @type {ServerOptions} */
(options.server.options).ca =
/** @type {ServerOptions & { cacert?: ServerOptions["ca"] }} */
(options.server.options).cacert;
}
delete (
/** @type {ServerOptions & { cacert?: ServerOptions["ca"] }} */ (
options.server.options
).cacert
);
}
/** @type {ServerOptions} */
(options.server.options).key =
/** @type {ServerOptions} */
(options.server.options).key || fakeCert;
/** @type {ServerOptions} */
(options.server.options).cert =
/** @type {ServerOptions} */
(options.server.options).cert || fakeCert;
}
if (typeof options.ipc === "boolean") {
const isWindows = process.platform === "win32";
const pipePrefix = isWindows ? "\\\\.\\pipe\\" : os.tmpdir();
const pipeName = "webpack-dev-server.sock";
options.ipc = path.join(pipePrefix, pipeName);
}
options.liveReload =
typeof options.liveReload !== "undefined" ? options.liveReload : true;
options.magicHtml =
typeof options.magicHtml !== "undefined" ? options.magicHtml : true;
// https://github.com/webpack/webpack-dev-server/issues/1990
const defaultOpenOptions = { wait: false };
/**
* @param {any} target
* @returns {NormalizedOpen[]}
*/
// TODO: remove --open-app in favor of --open-app-name
const getOpenItemsFromObject = ({ target, ...rest }) => {
const normalizedOptions = { ...defaultOpenOptions, ...rest };
if (typeof normalizedOptions.app === "string") {
normalizedOptions.app = {
name: normalizedOptions.app,
};
}
const normalizedTarget = typeof target === "undefined" ? "<url>" : target;
if (Array.isArray(normalizedTarget)) {
return normalizedTarget.map((singleTarget) => {
return { target: singleTarget, options: normalizedOptions };
});
}
return [{ target: normalizedTarget, options: normalizedOptions }];
};
if (typeof options.open === "undefined") {
/** @type {NormalizedOpen[]} */
(options.open) = [];
} else if (typeof options.open === "boolean") {
/** @type {NormalizedOpen[]} */
(options.open) = options.open
? [
{
target: "<url>",
options: /** @type {OpenOptions} */ (defaultOpenOptions),
},
]
: [];
} else if (typeof options.open === "string") {
/** @type {NormalizedOpen[]} */
(options.open) = [{ target: options.open, options: defaultOpenOptions }];
} else if (Array.isArray(options.open)) {
/**
* @type {NormalizedOpen[]}
*/
const result = [];
options.open.forEach((item) => {
if (typeof item === "string") {
result.push({ target: item, options: defaultOpenOptions });
return;
}
result.push(...getOpenItemsFromObject(item));
});
/** @type {NormalizedOpen[]} */
(options.open) = result;
} else {
/** @type {NormalizedOpen[]} */
(options.open) = [...getOpenItemsFromObject(options.open)];
}
if (options.onAfterSetupMiddleware) {
// TODO: remove in the next major release
util.deprecate(
() => {},
"'onAfterSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option.",
`DEP_WEBPACK_DEV_SERVER_ON_AFTER_SETUP_MIDDLEWARE`
)();
}
if (options.onBeforeSetupMiddleware) {
// TODO: remove in the next major release
util.deprecate(
() => {},
"'onBeforeSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option.",
`DEP_WEBPACK_DEV_SERVER_ON_BEFORE_SETUP_MIDDLEWARE`
)();
}
if (typeof options.port === "string" && options.port !== "auto") {
options.port = Number(options.port);
}
/**
* Assume a proxy configuration specified as:
* proxy: {
* 'context': { options }
* }
* OR
* proxy: {
* 'context': 'target'
* }
*/
if (typeof options.proxy !== "undefined") {
// TODO remove in the next major release, only accept `Array`
if (!Array.isArray(options.proxy)) {
if (
Object.prototype.hasOwnProperty.call(options.proxy, "target") ||
Object.prototype.hasOwnProperty.call(options.proxy, "router")
) {
/** @type {ProxyConfigArray} */
(options.proxy) = [/** @type {ProxyConfigMap} */ (options.proxy)];
} else {
/** @type {ProxyConfigArray} */
(options.proxy) = Object.keys(options.proxy).map(
/**
* @param {string} context
* @returns {HttpProxyMiddlewareOptions}
*/
(context) => {
let proxyOptions;
// For backwards compatibility reasons.
const correctedContext = context
.replace(/^\*$/, "**")
.replace(/\/\*$/, "");
if (
typeof (
/** @type {ProxyConfigMap} */ (options.proxy)[context]
) === "string"
) {
proxyOptions = {
context: correctedContext,
target:
/** @type {ProxyConfigMap} */
(options.proxy)[context],
};
} else {
proxyOptions = {
// @ts-ignore
.../** @type {ProxyConfigMap} */ (options.proxy)[context],
};
proxyOptions.context = correctedContext;
}
return proxyOptions;
}
);
}
}
/** @type {ProxyConfigArray} */
(options.proxy) =
/** @type {ProxyConfigArray} */
(options.proxy).map((item) => {
if (typeof item === "function") {
return item;
}
/**
* @param {"info" | "warn" | "error" | "debug" | "silent" | undefined | "none" | "log" | "verbose"} level
* @returns {"info" | "warn" | "error" | "debug" | "silent" | undefined}
*/
const getLogLevelForProxy = (level) => {
if (level === "none") {
return "silent";
}
if (level === "log") {
return "info";
}
if (level === "verbose") {
return "debug";
}
return level;
};
if (typeof item.logLevel === "undefined") {
item.logLevel = getLogLevelForProxy(
compilerOptions.infrastructureLogging
? compilerOptions.infrastructureLogging.level
: "info"
);
}
if (typeof item.logProvider === "undefined") {
item.logProvider = () => this.logger;
}
return item;
});
}
if (typeof options.setupExitSignals === "undefined") {
options.setupExitSignals = true;
}
if (typeof options.static === "undefined") {
options.static = [getStaticItem()];
} else if (typeof options.static === "boolean") {
options.static = options.static ? [getStaticItem()] : false;
} else if (typeof options.static === "string") {
options.static = [getStaticItem(options.static)];
} else if (Array.isArray(options.static)) {
options.static = options.static.map((item) => getStaticItem(item));
} else {
options.static = [getStaticItem(options.static)];
}
if (typeof options.watchFiles === "string") {
options.watchFiles = [
{ paths: options.watchFiles, options: getWatchOptions() },
];
} else if (
typeof options.watchFiles === "object" &&
options.watchFiles !== null &&
!Array.isArray(options.watchFiles)
) {
options.watchFiles = [
{
paths: options.watchFiles.paths,
options: getWatchOptions(options.watchFiles.options || {}),
},
];
} else if (Array.isArray(options.watchFiles)) {
options.watchFiles = options.watchFiles.map((item) => {
if (typeof item === "string") {
return { paths: item, options: getWatchOptions() };
}
return {
paths: item.paths,
options: getWatchOptions(item.options || {}),
};
});
} else {
options.watchFiles = [];
}
const defaultWebSocketServerType = "ws";
const defaultWebSocketServerOptions = { path: "/ws" };
if (typeof options.webSocketServer === "undefined") {
options.webSocketServer = {
type: defaultWebSocketServerType,
options: defaultWebSocketServerOptions,
};
} else if (
typeof options.webSocketServer === "boolean" &&
!options.webSocketServer
) {
options.webSocketServer = false;
} else if (
typeof options.webSocketServer === "string" ||
typeof options.webSocketServer === "function"
) {
options.webSocketServer = {
type: options.webSocketServer,
options: defaultWebSocketServerOptions,
};
} else {
options.webSocketServer = {
type:
/** @type {WebSocketServerConfiguration} */
(options.webSocketServer).type || defaultWebSocketServerType,
options: {
...defaultWebSocketServerOptions,
.../** @type {WebSocketServerConfiguration} */
(options.webSocketServer).options,
},
};
const webSocketServer =
/** @type {{ type: WebSocketServerConfiguration["type"], options: NonNullable<WebSocketServerConfiguration["options"]> }} */
(options.webSocketServer);
if (typeof webSocketServer.options.port === "string") {
webSocketServer.options.port = Number(webSocketServer.options.port);
}
}
}
/**
* @private
* @returns {string}
*/
getClientTransport() {
let clientImplementation;
let clientImplementationFound = true;
const isKnownWebSocketServerImplementation =
this.options.webSocketServer &&
typeof (
/** @type {WebSocketServerConfiguration} */
(this.options.webSocketServer).type
) === "string" &&
// @ts-ignore
(this.options.webSocketServer.type === "ws" ||
/** @type {WebSocketServerConfiguration} */
(this.options.webSocketServer).type === "sockjs");
let clientTransport;
if (this.options.client) {
if (
typeof (
/** @type {ClientConfiguration} */
(this.options.client).webSocketTransport
) !== "undefined"
) {
clientTransport =
/** @type {ClientConfiguration} */
(this.options.client).webSocketTransport;
} else if (isKnownWebSocketServerImplementation) {
clientTransport =
/** @type {WebSocketServerConfiguration} */
(this.options.webSocketServer).type;
} else {
clientTransport = "ws";
}
} else {
clientTransport = "ws";
}
switch (typeof clientTransport) {
case "string":
// could be 'sockjs', 'ws', or a path that should be required
if (clientTransport === "sockjs") {
clientImplementation = require.resolve(
"../client/clients/SockJSClient"
);
} else if (clientTransport === "ws") {
clientImplementation = require.resolve(
"../client/clients/WebSocketClient"
);
} else {
try {
clientImplementation = require.resolve(clientTransport);
} catch (e) {
clientImplementationFound = false;
}
}
break;
default:
clientImplementationFound = false;
}
if (!clientImplementationFound) {
throw new Error(
`${
!isKnownWebSocketServerImplementation
? "When you use custom web socket implementation you must explicitly specify client.webSocketTransport. "
: ""
}client.webSocketTransport must be a string denoting a default implementation (e.g. 'sockjs', 'ws') or a full path to a JS file via require.resolve(...) which exports a class `
);
}
return /** @type {string} */ (clientImplementation);
}
/**
* @private
* @returns {string}
*/
getServerTransport() {
let implementation;
let implementationFound = true;
switch (
typeof (
/** @type {WebSocketServerConfiguration} */
(this.options.webSocketServer).type
)
) {
case "string":
// Could be 'sockjs', in the future 'ws', or a path that should be required
if (
/** @type {WebSocketServerConfiguration} */ (
this.options.webSocketServer
).type === "sockjs"
) {
implementation = require("./servers/SockJSServer");
} else if (
/** @type {WebSocketServerConfiguration} */ (
this.options.webSocketServer
).type === "ws"
) {
implementation = require("./servers/WebsocketServer");
} else {
try {
// eslint-disable-next-line import/no-dynamic-require
implementation = require(/** @type {WebSocketServerConfiguration} */ (
this.options.webSocketServer
).type);
} catch (error) {
implementationFound = false;
}
}
break;
case "function":
implementation = /** @type {WebSocketServerConfiguration} */ (
this.options.webSocketServer
).type;
break;
default:
implementationFound = false;
}
if (!implementationFound) {
throw new Error(
"webSocketServer (webSocketServer.type) must be a string denoting a default implementation (e.g. 'ws', 'sockjs'), a full path to " +
"a JS file which exports a class extending BaseServer (webpack-dev-server/lib/servers/BaseServer.js) " +
"via require.resolve(...), or the class itself which extends BaseServer"
);
}
return implementation;
}
/**
* @private
* @returns {void}
*/
setupProgressPlugin() {
const { ProgressPlugin } =
/** @type {MultiCompiler}*/
(this.compiler).compilers
? /** @type {MultiCompiler}*/ (this.compiler).compilers[0].webpack
: /** @type {Compiler}*/ (this.compiler).webpack ||
// TODO remove me after drop webpack v4
require("webpack");
new ProgressPlugin(
/**
* @param {number} percent
* @param {string} msg
* @param {string} addInfo
* @param {string} pluginName
*/
(percent, msg, addInfo, pluginName) => {
percent = Math.floor(percent * 100);
if (percent === 100) {
msg = "Compilation completed";
}
if (addInfo) {
msg = `${msg} (${addInfo})`;
}
if (this.webSocketServer) {
this.sendMessage(this.webSocketServer.clients, "progress-update", {
percent,
msg,
pluginName,
});
}
if (this.server) {
this.server.emit("progress-update", { percent, msg, pluginName });
}
}
).apply(this.compiler);
}
/**
* @private
* @returns {Promise<void>}
*/
async initialize() {
if (this.options.webSocketServer) {
const compilers =
/** @type {MultiCompiler} */
(this.compiler).compilers || [this.compiler];
compilers.forEach((compiler) => {
this.addAdditionalEntries(compiler);
const webpack = compiler.webpack || require("webpack");
new webpack.ProvidePlugin({
__webpack_dev_server_client__: this.getClientTransport(),
}).apply(compiler);
// TODO remove after drop webpack v4 support
compiler.options.plugins = compiler.options.plugins || [];
if (this.options.hot) {
const HMRPluginExists = compiler.options.plugins.find(
(p) => p.constructor === webpack.HotModuleReplacementPlugin
);
if (HMRPluginExists) {
this.logger.warn(
`"hot: true" automatically applies HMR plugin, you don't have to add it manually to your webpack configuration.`
);
} else {
// Apply the HMR plugin
const plugin = new webpack.HotModuleReplacementPlugin();
plugin.apply(compiler);
}
}
});
if (
this.options.client &&
/** @type {ClientConfiguration} */ (this.options.client).progress
) {
this.setupProgressPlugin();
}
}
this.setupHooks();
this.setupApp();
this.setupHostHeaderCheck();
this.setupDevMiddleware();
// Should be after `webpack-dev-middleware`, otherwise other middlewares might rewrite response
this.setupBuiltInRoutes();
this.setupWatchFiles();
this.setupWatchStaticFiles();
this.setupMiddlewares();
this.createServer();
if (this.options.setupExitSignals) {
const signals = ["SIGINT", "SIGTERM"];
let needForceShutdown = false;
signals.forEach((signal) => {
const listener = () => {
if (needForceShutdown) {
process.exit();
}
this.logger.info(
"Gracefully shutting down. To force exit, press ^C again. Please wait..."
);
needForceShutdown = true;
this.stopCallback(() => {
if (typeof this.compiler.close === "function") {
this.compiler.close(() => {
process.exit();
});
} else {
process.exit();
}
});
};
this.listeners.push({ name: signal, listener });
process.on(signal, listener);
});
}
// Proxy WebSocket without the initial http request
// https://github.com/chimurai/http-proxy-middleware#external-websocket-upgrade
/** @type {RequestHandler[]} */
(this.webSocketProxies).forEach((webSocketProxy) => {
/** @type {import("http").Server} */
(this.server).on(
"upgrade",
/** @type {RequestHandler & { upgrade: NonNullable<RequestHandler["upgrade"]> }} */
(webSocketProxy).upgrade
);
}, this);
}
/**
* @private
* @returns {void}
*/
setupApp() {
/** @type {import("express").Application | undefined}*/
// eslint-disable-next-line new-cap
this.app = new /** @type {any} */ (express)();
}
/**
* @private
* @param {Stats | MultiStats} statsObj
* @returns {StatsCompilation}
*/
getStats(statsObj) {
const stats = Server.DEFAULT_STATS;
const compilerOptions = this.getCompilerOptions();
// @ts-ignore
if (compilerOptions.stats && compilerOptions.stats.warningsFilter) {
// @ts-ignore
stats.warningsFilter = compilerOptions.stats.warningsFilter;
}
return statsObj.toJson(stats);
}
/**
* @private
* @returns {void}
*/
setupHooks() {
this.compiler.hooks.invalid.tap("webpack-dev-server", () => {
if (this.webSocketServer) {
this.sendMessage(this.webSocketServer.clients, "invalid");
}
});
this.compiler.hooks.done.tap(
"webpack-dev-server",
/**
* @param {Stats | MultiStats} stats
*/
(stats) => {
if (this.webSocketServer) {
this.sendStats(this.webSocketServer.clients, this.getStats(stats));
}
/**
* @private
* @type {Stats | MultiStats}
*/
this.stats = stats;
}
);
}
/**
* @private
* @returns {void}
*/
setupHostHeaderCheck() {
/** @type {import("express").Application} */
(this.app).all(
"*",
/**
* @param {Request} req
* @param {Response} res
* @param {NextFunction} next
* @returns {void}
*/
(req, res, next) => {
if (
this.checkHeader(
/** @type {{ [key: string]: string | undefined }} */
(req.headers),
"host"
)
) {
return next();
}
res.send("Invalid Host header");
}
);
}
/**
* @private
* @returns {void}
*/
setupDevMiddleware() {
const webpackDevMiddleware = require("webpack-dev-middleware");
// middleware for serving webpack bundle
this.middleware = webpackDevMiddleware(
this.compiler,
this.options.devMiddleware
);
}
/**
* @private
* @returns {void}
*/
setupBuiltInRoutes() {
const { app, middleware } = this;
/** @type {import("express").Application} */
(app).get(
"/__webpack_dev_server__/sockjs.bundle.js",
/**
* @param {Request} req
* @param {Response} res
* @returns {void}
*/
(req, res) => {
res.setHeader("Content-Type", "application/javascript");
const clientPath = path.join(__dirname, "..", "client");
res.sendFile(path.join(clientPath, "modules/sockjs-client/index.js"));
}
);
/** @type {import("express").Application} */
(app).get(
"/webpack-dev-server/invalidate",
/**
* @param {Request} _req
* @param {Response} res
* @returns {void}
*/
(_req, res) => {
this.invalidate();
res.end();
}
);
/** @type {import("express").Application} */
(app).get(
"/webpack-dev-server",
/**
* @param {Request} req
* @param {Response} res
* @returns {void}
*/
(req, res) => {
/** @type {import("webpack-dev-middleware").API<Request, Response>}*/
(middleware).waitUntilValid((stats) => {
res.setHeader("Content-Type", "text/html");
res.write(
'<!DOCTYPE html><html><head><meta charset="utf-8"/></head><body>'
);
const statsForPrint =
typeof (/** @type {MultiStats} */ (stats).stats) !== "undefined"
? /** @type {MultiStats} */ (stats).toJson().children
: [/** @type {Stats} */ (stats).toJson()];
res.write(`<h1>Assets Report:</h1>`);
/**
* @type {StatsCompilation[]}
*/
(statsForPrint).forEach((item, index) => {
res.write("<div>");
const name =
// eslint-disable-next-line no-nested-ternary
typeof item.name !== "undefined"
? item.name
: /** @type {MultiStats} */ (stats).stats
? `unnamed[${index}]`
: "unnamed";
res.write(`<h2>Compilation: ${name}</h2>`);
res.write("<ul>");
const publicPath =
item.publicPath === "auto" ? "" : item.publicPath;
for (const asset of /** @type {NonNullable<StatsCompilation["assets"]>} */ (
item.assets
)) {
const assetName = asset.name;
const assetURL = `${publicPath}${assetName}`;
res.write(
`<li>
<strong><a href="${assetURL}" target="_blank">${assetName}</a></strong>
</li>`
);
}
res.write("</ul>");
res.write("</div>");
});
res.end("</body></html>");
});
}
);
}
/**
* @private
* @returns {void}
*/
setupWatchStaticFiles() {
if (/** @type {NormalizedStatic[]} */ (this.options.static).length > 0) {
/** @type {NormalizedStatic[]} */
(this.options.static).forEach((staticOption) => {
if (staticOption.watch) {
this.watchFiles(staticOption.directory, staticOption.watch);
}
});
}
}
/**
* @private
* @returns {void}
*/
setupWatchFiles() {
const { watchFiles } = this.options;
if (/** @type {WatchFiles[]} */ (watchFiles).length > 0) {
/** @type {WatchFiles[]} */
(watchFiles).forEach((item) => {
this.watchFiles(item.paths, item.options);
});
}
}
/**
* @private
* @returns {void}
*/
setupMiddlewares() {
/**
* @type {Array<Middleware>}
*/
let middlewares = [];
// compress is placed last and uses unshift so that it will be the first middleware used
if (this.options.compress) {
const compression = require("compression");
middlewares.push({ name: "compression", middleware: compression() });
}
if (typeof this.options.onBeforeSetupMiddleware === "function") {
this.options.onBeforeSetupMiddleware(this);
}
if (typeof this.options.headers !== "undefined") {
middlewares.push({
name: "set-headers",
path: "*",
middleware: this.setHeaders.bind(this),
});
}
middlewares.push({
name: "webpack-dev-middleware",
middleware:
/** @type {import("webpack-dev-middleware").Middleware<Request, Response>}*/
(this.middleware),
});
if (this.options.proxy) {
const { createProxyMiddleware } = require("http-proxy-middleware");
/**
* @param {ProxyConfigArrayItem} proxyConfig
* @returns {RequestHandler | undefined}
*/
const getProxyMiddleware = (proxyConfig) => {
// It is possible to use the `bypass` method without a `target` or `router`.
// However, the proxy middleware has no use in this case, and will fail to instantiate.
if (proxyConfig.target) {
const context = proxyConfig.context || proxyConfig.path;
return createProxyMiddleware(
/** @type {string} */ (context),
proxyConfig
);
}
if (proxyConfig.router) {
return createProxyMiddleware(proxyConfig);
}
};
/**
* Assume a proxy configuration specified as:
* proxy: [
* {
* context: "value",
* ...options,
* },
* // or:
* function() {
* return {
* context: "context",
* ...options,
* };
* }
* ]
*/
/** @type {ProxyConfigArray} */
(this.options.proxy).forEach((proxyConfigOrCallback) => {
/**
* @type {RequestHandler}
*/
let proxyMiddleware;
let proxyConfig =
typeof proxyConfigOrCallback === "function"
? proxyConfigOrCallback()
: proxyConfigOrCallback;
proxyMiddleware =
/** @type {RequestHandler} */
(getProxyMiddleware(proxyConfig));
if (proxyConfig.ws) {
this.webSocketProxies.push(proxyMiddleware);
}
/**
* @param {Request} req
* @param {Response} res
* @param {NextFunction} next
* @returns {Promise<void>}
*/
const handler = async (req, res, next) => {
if (typeof proxyConfigOrCallback === "function") {
const newProxyConfig = proxyConfigOrCallback(req, res, next);
if (newProxyConfig !== proxyConfig) {
proxyConfig = newProxyConfig;
proxyMiddleware =
/** @type {RequestHandler} */
(getProxyMiddleware(proxyConfig));
}
}
// - Check if we have a bypass function defined
// - In case the bypass function is defined we'll retrieve the
// bypassUrl from it otherwise bypassUrl would be null
// TODO remove in the next major in favor `context` and `router` options
const isByPassFuncDefined = typeof proxyConfig.bypass === "function";
const bypassUrl = isByPassFuncDefined
? await /** @type {ByPass} */ (proxyConfig.bypass)(
req,
res,
proxyConfig
)
: null;
if (typeof bypassUrl === "boolean") {
// skip the proxy
// @ts-ignore
req.url = null;
next();
} else if (typeof bypassUrl === "string") {
// byPass to that url
req.url = bypassUrl;
next();
} else if (proxyMiddleware) {
return proxyMiddleware(req, res, next);
} else {
next();
}
};
middlewares.push({
name: "http-proxy-middleware",
middleware: handler,
});
// Also forward error requests to the proxy so it can handle them.
middlewares.push({
name: "http-proxy-middleware-error-handler",
middleware:
/**
* @param {Error} error
* @param {Request} req
* @param {Response} res
* @param {NextFunction} next
* @returns {any}
*/
(error, req, res, next) => handler(req, res, next),
});
});
middlewares.push({
name: "webpack-dev-middleware",
middleware:
/** @type {import("webpack-dev-middleware").Middleware<Request, Response>}*/
(this.middleware),
});
}
if (/** @type {NormalizedStatic[]} */ (this.options.static).length > 0) {
/** @type {NormalizedStatic[]} */
(this.options.static).forEach((staticOption) => {
staticOption.publicPath.forEach((publicPath) => {
middlewares.push({
name: "express-static",
path: publicPath,
middleware: express.static(
staticOption.directory,
staticOption.staticOptions
),
});
});
});
}
if (this.options.historyApiFallback) {
const connectHistoryApiFallback = require("connect-history-api-fallback");
const { historyApiFallback } = this.options;
if (
typeof (
/** @type {ConnectHistoryApiFallbackOptions} */
(historyApiFallback).logger
) === "undefined" &&
!(
/** @type {ConnectHistoryApiFallbackOptions} */
(historyApiFallback).verbose
)
) {
// @ts-ignore
historyApiFallback.logger = this.logger.log.bind(
this.logger,
"[connect-history-api-fallback]"
);
}
// Fall back to /index.html if nothing else matches.
middlewares.push({
name: "connect-history-api-fallback",
middleware: connectHistoryApiFallback(
/** @type {ConnectHistoryApiFallbackOptions} */
(historyApiFallback)
),
});
// include our middleware to ensure
// it is able to handle '/index.html' request after redirect
middlewares.push({
name: "webpack-dev-middleware",
middleware:
/** @type {import("webpack-dev-middleware").Middleware<Request, Response>}*/
(this.middleware),
});
if (/** @type {NormalizedStatic[]} */ (this.options.static).length > 0) {
/** @type {NormalizedStatic[]} */
(this.options.static).forEach((staticOption) => {
staticOption.publicPath.forEach((publicPath) => {
middlewares.push({
name: "express-static",
path: publicPath,
middleware: express.static(
staticOption.directory,
staticOption.staticOptions
),
});
});
});
}
}
if (/** @type {NormalizedStatic[]} */ (this.options.static).length > 0) {
const serveIndex = require("serve-index");
/** @type {NormalizedStatic[]} */
(this.options.static).forEach((staticOption) => {
staticOption.publicPath.forEach((publicPath) => {
if (staticOption.serveIndex) {
middlewares.push({
name: "serve-index",
path: publicPath,
/**
* @param {Request} req
* @param {Response} res
* @param {NextFunction} next
* @returns {void}
*/
middleware: (req, res, next) => {
// serve-index doesn't fallthrough non-get/head request to next middleware
if (req.method !== "GET" && req.method !== "HEAD") {
return next();
}
serveIndex(
staticOption.directory,
/** @type {ServeIndexOptions} */
(staticOption.serveIndex)
)(req, res, next);
},
});
}
});
});
}
if (this.options.magicHtml) {
middlewares.push({
name: "serve-magic-html",
middleware: this.serveMagicHtml.bind(this),
});
}
const optionsRequestResponseMiddleware = (req, res, next) => {
if (req.method === "OPTIONS") {
res.statusCode = 204;
res.setHeader("Content-Length", "0");
res.end();
return;
}
next();
};
middlewares.push({
name: "options-middleware",
path: "*",
middleware: optionsRequestResponseMiddleware,
});
if (typeof this.options.setupMiddlewares === "function") {
middlewares = this.options.setupMiddlewares(middlewares, this);
}
middlewares.forEach((middleware) => {
if (typeof middleware === "function") {
/** @type {import("express").Application} */
(this.app).use(middleware);
} else if (typeof middleware.path !== "undefined") {
/** @type {import("express").Application} */
(this.app).use(middleware.path, middleware.middleware);
} else {
/** @type {import("express").Application} */
(this.app).use(middleware.middleware);
}
});
if (typeof this.options.onAfterSetupMiddleware === "function") {
this.options.onAfterSetupMiddleware(this);
}
}
/**
* @private
* @returns {void}
*/
createServer() {
const { type, options } = /** @type {ServerConfiguration} */ (
this.options.server
);
/** @type {import("http").Server | undefined | null} */
// eslint-disable-next-line import/no-dynamic-require
this.server = require(/** @type {string} */ (type)).createServer(
options,
this.app
);
/** @type {import("http").Server} */
(this.server).on(
"connection",
/**
* @param {Socket} socket
*/
(socket) => {
// Add socket to list
this.sockets.push(socket);
socket.once("close", () => {
// Remove socket from list
this.sockets.splice(this.sockets.indexOf(socket), 1);
});
}
);
/** @type {import("http").Server} */
(this.server).on(
"error",
/**
* @param {Error} error
*/
(error) => {
throw error;
}
);
}
/**
* @private
* @returns {void}
*/
// TODO: remove `--web-socket-server` in favor of `--web-socket-server-type`
createWebSocketServer() {
/** @type {WebSocketServerImplementation | undefined | null} */
this.webSocketServer = new /** @type {any} */ (this.getServerTransport())(
this
);
/** @type {WebSocketServerImplementation} */
(this.webSocketServer).implementation.on(
"connection",
/**
* @param {ClientConnection} client
* @param {IncomingMessage} request
*/
(client, request) => {
/** @type {{ [key: string]: string | undefined } | undefined} */
const headers =
// eslint-disable-next-line no-nested-ternary
typeof request !== "undefined"
? /** @type {{ [key: string]: string | undefined }} */
(request.headers)
: typeof (
/** @type {import("sockjs").Connection} */ (client).headers
) !== "undefined"
? /** @type {import("sockjs").Connection} */ (client).headers
: // eslint-disable-next-line no-undefined
undefined;
if (!headers) {
this.logger.warn(
'webSocketServer implementation must pass headers for the "connection" event'
);
}
if (
!headers ||
!this.checkHeader(headers, "host") ||
!this.checkHeader(headers, "origin")
) {
this.sendMessage([client], "error", "Invalid Host/Origin header");
// With https enabled, the sendMessage above is encrypted asynchronously so not yet sent
// Terminate would prevent it sending, so use close to allow it to be sent
client.close();
return;
}
if (this.options.hot === true || this.options.hot === "only") {
this.sendMessage([client], "hot");
}
if (this.options.liveReload) {
this.sendMessage([client], "liveReload");
}
if (
this.options.client &&
/** @type {ClientConfiguration} */
(this.options.client).progress
) {
this.sendMessage(
[client],
"progress",
/** @type {ClientConfiguration} */
(this.options.client).progress
);
}
if (
this.options.client &&
/** @type {ClientConfiguration} */ (this.options.client).reconnect
) {
this.sendMessage(
[client],
"reconnect",
/** @type {ClientConfiguration} */
(this.options.client).reconnect
);
}
if (
this.options.client &&
/** @type {ClientConfiguration} */
(this.options.client).overlay
) {
this.sendMessage(
[client],
"overlay",
/** @type {ClientConfiguration} */
(this.options.client).overlay
);
}
if (!this.stats) {
return;
}
this.sendStats([client], this.getStats(this.stats), true);
}
);
}
/**
* @private
* @param {string} defaultOpenTarget
* @returns {void}
*/
openBrowser(defaultOpenTarget) {
const open = require("open");
Promise.all(
/** @type {NormalizedOpen[]} */
(this.options.open).map((item) => {
/**
* @type {string}
*/
let openTarget;
if (item.target === "<url>") {
openTarget = defaultOpenTarget;
} else {
openTarget = Server.isAbsoluteURL(item.target)
? item.target
: new URL(item.target, defaultOpenTarget).toString();
}
return open(openTarget, item.options).catch(() => {
this.logger.warn(
`Unable to open "${openTarget}" page${
item.options.app
? ` in "${
/** @type {import("open").App} */
(item.options.app).name
}" app${
/** @type {import("open").App} */
(item.options.app).arguments
? ` with "${
/** @type {import("open").App} */
(item.options.app).arguments.join(" ")
}" arguments`
: ""
}`
: ""
}. If you are running in a headless environment, please do not use the "open" option or related flags like "--open", "--open-target", and "--open-app".`
);
});
})
);
}
/**
* @private
* @returns {void}
*/
runBonjour() {
const { Bonjour } = require("bonjour-service");
/**
* @private
* @type {Bonjour | undefined}
*/
this.bonjour = new Bonjour();
this.bonjour.publish({
// @ts-expect-error
name: `Webpack Dev Server ${os.hostname()}:${this.options.port}`,
// @ts-expect-error
port: /** @type {number} */ (this.options.port),
// @ts-expect-error
type:
/** @type {ServerConfiguration} */
(this.options.server).type === "http" ? "http" : "https",
subtypes: ["webpack"],
.../** @type {BonjourOptions} */ (this.options.bonjour),
});
}
/**
* @private
* @returns {void}
*/
stopBonjour(callback = () => {}) {
/** @type {Bonjour} */
(this.bonjour).unpublishAll(() => {
/** @type {Bonjour} */
(this.bonjour).destroy();
if (callback) {
callback();
}
});
}
/**
* @private
* @returns {void}
*/
logStatus() {
const { isColorSupported, cyan, red } = require("colorette");
/**
* @param {Compiler["options"]} compilerOptions
* @returns {boolean}
*/
const getColorsOption = (compilerOptions) => {
/**
* @type {boolean}
*/
let colorsEnabled;
if (
compilerOptions.stats &&
typeof (/** @type {StatsOptions} */ (compilerOptions.stats).colors) !==
"undefined"
) {
colorsEnabled =
/** @type {boolean} */
(/** @type {StatsOptions} */ (compilerOptions.stats).colors);
} else {
colorsEnabled = isColorSupported;
}
return colorsEnabled;
};
const colors = {
/**
* @param {boolean} useColor
* @param {string} msg
* @returns {string}
*/
info(useColor, msg) {
if (useColor) {
return cyan(msg);
}
return msg;
},
/**
* @param {boolean} useColor
* @param {string} msg
* @returns {string}
*/
error(useColor, msg) {
if (useColor) {
return red(msg);
}
return msg;
},
};
const useColor = getColorsOption(this.getCompilerOptions());
if (this.options.ipc) {
this.logger.info(
`Project is running at: "${
/** @type {import("http").Server} */
(this.server).address()
}"`
);
} else {
const protocol =
/** @type {ServerConfiguration} */
(this.options.server).type === "http" ? "http" : "https";
const { address, port } =
/** @type {import("net").AddressInfo} */
(
/** @type {import("http").Server} */
(this.server).address()
);
/**
* @param {string} newHostname
* @returns {string}
*/
const prettyPrintURL = (newHostname) =>
url.format({ protocol, hostname: newHostname, port, pathname: "/" });
let server;
let localhost;
let loopbackIPv4;
let loopbackIPv6;
let networkUrlIPv4;
let networkUrlIPv6;
if (this.options.host) {
if (this.options.host === "localhost") {
localhost = prettyPrintURL("localhost");
} else {
let isIP;
try {
isIP = ipaddr.parse(this.options.host);
} catch (error) {
// Ignore
}
if (!isIP) {
server = prettyPrintURL(this.options.host);
}
}
}
const parsedIP = ipaddr.parse(address);
if (parsedIP.range() === "unspecified") {
localhost = prettyPrintURL("localhost");
const networkIPv4 = Server.internalIPSync("v4");
if (networkIPv4) {
networkUrlIPv4 = prettyPrintURL(networkIPv4);
}
const networkIPv6 = Server.internalIPSync("v6");
if (networkIPv6) {
networkUrlIPv6 = prettyPrintURL(networkIPv6);
}
} else if (parsedIP.range() === "loopback") {
if (parsedIP.kind() === "ipv4") {
loopbackIPv4 = prettyPrintURL(parsedIP.toString());
} else if (parsedIP.kind() === "ipv6") {
loopbackIPv6 = prettyPrintURL(parsedIP.toString());
}
} else {
networkUrlIPv4 =
parsedIP.kind() === "ipv6" &&
/** @type {IPv6} */
(parsedIP).isIPv4MappedAddress()
? prettyPrintURL(
/** @type {IPv6} */
(parsedIP).toIPv4Address().toString()
)
: prettyPrintURL(address);
if (parsedIP.kind() === "ipv6") {
networkUrlIPv6 = prettyPrintURL(address);
}
}
this.logger.info("Project is running at:");
if (server) {
this.logger.info(`Server: ${colors.info(useColor, server)}`);
}
if (localhost || loopbackIPv4 || loopbackIPv6) {
const loopbacks = [];
if (localhost) {
loopbacks.push([colors.info(useColor, localhost)]);
}
if (loopbackIPv4) {
loopbacks.push([colors.info(useColor, loopbackIPv4)]);
}
if (loopbackIPv6) {
loopbacks.push([colors.info(useColor, loopbackIPv6)]);
}
this.logger.info(`Loopback: ${loopbacks.join(", ")}`);
}
if (networkUrlIPv4) {
this.logger.info(
`On Your Network (IPv4): ${colors.info(useColor, networkUrlIPv4)}`
);
}
if (networkUrlIPv6) {
this.logger.info(
`On Your Network (IPv6): ${colors.info(useColor, networkUrlIPv6)}`
);
}
if (/** @type {NormalizedOpen[]} */ (this.options.open).length > 0) {
const openTarget = prettyPrintURL(this.options.host || "localhost");
this.openBrowser(openTarget);
}
}
if (/** @type {NormalizedStatic[]} */ (this.options.static).length > 0) {
this.logger.info(
`Content not from webpack is served from '${colors.info(
useColor,
/** @type {NormalizedStatic[]} */
(this.options.static)
.map((staticOption) => staticOption.directory)
.join(", ")
)}' directory`
);
}
if (this.options.historyApiFallback) {
this.logger.info(
`404s will fallback to '${colors.info(
useColor,
/** @type {ConnectHistoryApiFallbackOptions} */ (
this.options.historyApiFallback
).index || "/index.html"
)}'`
);
}
if (this.options.bonjour) {
const bonjourProtocol =
/** @type {BonjourOptions} */
(this.options.bonjour).type ||
/** @type {ServerConfiguration} */
(this.options.server).type === "http"
? "http"
: "https";
this.logger.info(
`Broadcasting "${bonjourProtocol}" with subtype of "webpack" via ZeroConf DNS (Bonjour)`
);
}
}
/**
* @private
* @param {Request} req
* @param {Response} res
* @param {NextFunction} next
*/
setHeaders(req, res, next) {
let { headers } = this.options;
if (headers) {
if (typeof headers === "function") {
headers = headers(
req,
res,
/** @type {import("webpack-dev-middleware").API<Request, Response>}*/
(this.middleware).context
);
}
/**
* @type {{key: string, value: string}[]}
*/
const allHeaders = [];
if (!Array.isArray(headers)) {
// eslint-disable-next-line guard-for-in
for (const name in headers) {
// @ts-ignore
allHeaders.push({ key: name, value: headers[name] });
}
headers = allHeaders;
}
headers.forEach(
/**
* @param {{key: string, value: any}} header
*/
(header) => {
res.setHeader(header.key, header.value);
}
);
}
next();
}
/**
* @private
* @param {{ [key: string]: string | undefined }} headers
* @param {string} headerToCheck
* @returns {boolean}
*/
checkHeader(headers, headerToCheck) {
// allow user to opt out of this security check, at their own risk
// by explicitly enabling allowedHosts
if (this.options.allowedHosts === "all") {
return true;
}
// get the Host header and extract hostname
// we don't care about port not matching
const hostHeader = headers[headerToCheck];
if (!hostHeader) {
return false;
}
if (/^(file|.+-extension):/i.test(hostHeader)) {
return true;
}
// use the node url-parser to retrieve the hostname from the host-header.
const hostname = url.parse(
// if hostHeader doesn't have scheme, add // for parsing.
/^(.+:)?\/\//.test(hostHeader) ? hostHeader : `//${hostHeader}`,
false,
true
).hostname;
// always allow requests with explicit IPv4 or IPv6-address.
// A note on IPv6 addresses:
// hostHeader will always contain the brackets denoting
// an IPv6-address in URLs,
// these are removed from the hostname in url.parse(),
// so we have the pure IPv6-address in hostname.
// always allow localhost host, for convenience (hostname === 'localhost')
// allow hostname of listening address (hostname === this.options.host)
const isValidHostname =
(hostname !== null && ipaddr.IPv4.isValid(hostname)) ||
(hostname !== null && ipaddr.IPv6.isValid(hostname)) ||
hostname === "localhost" ||
hostname === this.options.host;
if (isValidHostname) {
return true;
}
const { allowedHosts } = this.options;
// always allow localhost host, for convenience
// allow if hostname is in allowedHosts
if (Array.isArray(allowedHosts) && allowedHosts.length > 0) {
for (let hostIdx = 0; hostIdx < allowedHosts.length; hostIdx++) {
const allowedHost = allowedHosts[hostIdx];
if (allowedHost === hostname) {
return true;
}
// support "." as a subdomain wildcard
// e.g. ".example.com" will allow "example.com", "www.example.com", "subdomain.example.com", etc
if (allowedHost[0] === ".") {
// "example.com" (hostname === allowedHost.substring(1))
// "*.example.com" (hostname.endsWith(allowedHost))
if (
hostname === allowedHost.substring(1) ||
/** @type {string} */ (hostname).endsWith(allowedHost)
) {
return true;
}
}
}
}
// Also allow if `client.webSocketURL.hostname` provided
if (
this.options.client &&
typeof (
/** @type {ClientConfiguration} */ (this.options.client).webSocketURL
) !== "undefined"
) {
return (
/** @type {WebSocketURL} */
(/** @type {ClientConfiguration} */ (this.options.client).webSocketURL)
.hostname === hostname
);
}
// disallow
return false;
}
/**
* @param {ClientConnection[]} clients
* @param {string} type
* @param {any} [data]
* @param {any} [params]
*/
// eslint-disable-next-line class-methods-use-this
sendMessage(clients, type, data, params) {
for (const client of clients) {
// `sockjs` uses `1` to indicate client is ready to accept data
// `ws` uses `WebSocket.OPEN`, but it is mean `1` too
if (client.readyState === 1) {
client.send(JSON.stringify({ type, data, params }));
}
}
}
/**
* @private
* @param {Request} req
* @param {Response} res
* @param {NextFunction} next
* @returns {void}
*/
serveMagicHtml(req, res, next) {
if (req.method !== "GET" && req.method !== "HEAD") {
return next();
}
/** @type {import("webpack-dev-middleware").API<Request, Response>}*/
(this.middleware).waitUntilValid(() => {
const _path = req.path;
try {
const filename =
/** @type {import("webpack-dev-middleware").API<Request, Response>}*/
(this.middleware).getFilenameFromUrl(`${_path}.js`);
const isFile =
/** @type {Compiler["outputFileSystem"] & { statSync: import("fs").StatSyncFn }}*/
(
/** @type {import("webpack-dev-middleware").API<Request, Response>}*/
(this.middleware).context.outputFileSystem
)
.statSync(/** @type {import("fs").PathLike} */ (filename))
.isFile();
if (!isFile) {
return next();
}
// Serve a page that executes the javascript
// @ts-ignore
const queries = req._parsedUrl.search || "";
const responsePage = `<!DOCTYPE html><html><head><meta charset="utf-8"/></head><body><script type="text/javascript" charset="utf-8" src="${_path}.js${queries}"></script></body></html>`;
res.send(responsePage);
} catch (error) {
return next();
}
});
}
// Send stats to a socket or multiple sockets
/**
* @private
* @param {ClientConnection[]} clients
* @param {StatsCompilation} stats
* @param {boolean} [force]
*/
sendStats(clients, stats, force) {
const shouldEmit =
!force &&
stats &&
(!stats.errors || stats.errors.length === 0) &&
(!stats.warnings || stats.warnings.length === 0) &&
this.currentHash === stats.hash;
if (shouldEmit) {
this.sendMessage(clients, "still-ok");
return;
}
this.currentHash = stats.hash;
this.sendMessage(clients, "hash", stats.hash);
if (
/** @type {NonNullable<StatsCompilation["errors"]>} */
(stats.errors).length > 0 ||
/** @type {NonNullable<StatsCompilation["warnings"]>} */
(stats.warnings).length > 0
) {
const hasErrors =
/** @type {NonNullable<StatsCompilation["errors"]>} */
(stats.errors).length > 0;
if (
/** @type {NonNullable<StatsCompilation["warnings"]>} */
(stats.warnings).length > 0
) {
let params;
if (hasErrors) {
params = { preventReloading: true };
}
this.sendMessage(clients, "warnings", stats.warnings, params);
}
if (
/** @type {NonNullable<StatsCompilation["errors"]>} */ (stats.errors)
.length > 0
) {
this.sendMessage(clients, "errors", stats.errors);
}
} else {
this.sendMessage(clients, "ok");
}
}
/**
* @param {string | string[]} watchPath
* @param {WatchOptions} [watchOptions]
*/
watchFiles(watchPath, watchOptions) {
const chokidar = require("chokidar");
const watcher = chokidar.watch(watchPath, watchOptions);
// disabling refreshing on changing the content
if (this.options.liveReload) {
watcher.on("change", (item) => {
if (this.webSocketServer) {
this.sendMessage(
this.webSocketServer.clients,
"static-changed",
item
);
}
});
}
this.staticWatchers.push(watcher);
}
/**
* @param {import("webpack-dev-middleware").Callback} [callback]
*/
invalidate(callback = () => {}) {
if (this.middleware) {
this.middleware.invalidate(callback);
}
}
/**
* @returns {Promise<void>}
*/
async start() {
await this.normalizeOptions();
if (this.options.ipc) {
await /** @type {Promise<void>} */ (
new Promise((resolve, reject) => {
const net = require("net");
const socket = new net.Socket();
socket.on(
"error",
/**
* @param {Error & { code?: string }} error
*/
(error) => {
if (error.code === "ECONNREFUSED") {
// No other server listening on this socket so it can be safely removed
fs.unlinkSync(/** @type {string} */ (this.options.ipc));
resolve();
return;
} else if (error.code === "ENOENT") {
resolve();
return;
}
reject(error);
}
);
socket.connect(
{ path: /** @type {string} */ (this.options.ipc) },
() => {
throw new Error(`IPC "${this.options.ipc}" is already used`);
}
);
})
);
} else {
this.options.host = await Server.getHostname(
/** @type {Host} */ (this.options.host)
);
this.options.port = await Server.getFreePort(
/** @type {Port} */ (this.options.port),
this.options.host
);
}
await this.initialize();
const listenOptions = this.options.ipc
? { path: this.options.ipc }
: { host: this.options.host, port: this.options.port };
await /** @type {Promise<void>} */ (
new Promise((resolve) => {
/** @type {import("http").Server} */
(this.server).listen(listenOptions, () => {
resolve();
});
})
);
if (this.options.ipc) {
// chmod 666 (rw rw rw)
const READ_WRITE = 438;
await fs.promises.chmod(
/** @type {string} */ (this.options.ipc),
READ_WRITE
);
}
if (this.options.webSocketServer) {
this.createWebSocketServer();
}
if (this.options.bonjour) {
this.runBonjour();
}
this.logStatus();
if (typeof this.options.onListening === "function") {
this.options.onListening(this);
}
}
/**
* @param {(err?: Error) => void} [callback]
*/
startCallback(callback = () => {}) {
this.start()
.then(() => callback(), callback)
.catch(callback);
}
/**
* @returns {Promise<void>}
*/
async stop() {
if (this.bonjour) {
await /** @type {Promise<void>} */ (
new Promise((resolve) => {
this.stopBonjour(() => {
resolve();
});
})
);
}
this.webSocketProxies = [];
await Promise.all(this.staticWatchers.map((watcher) => watcher.close()));
this.staticWatchers = [];
if (this.webSocketServer) {
await /** @type {Promise<void>} */ (
new Promise((resolve) => {
/** @type {WebSocketServerImplementation} */
(this.webSocketServer).implementation.close(() => {
this.webSocketServer = null;
resolve();
});
for (const client of /** @type {WebSocketServerImplementation} */ (
this.webSocketServer
).clients) {
client.terminate();
}
/** @type {WebSocketServerImplementation} */
(this.webSocketServer).clients = [];
})
);
}
if (this.server) {
await /** @type {Promise<void>} */ (
new Promise((resolve) => {
/** @type {import("http").Server} */
(this.server).close(() => {
this.server = null;
resolve();
});
for (const socket of this.sockets) {
socket.destroy();
}
this.sockets = [];
})
);
if (this.middleware) {
await /** @type {Promise<void>} */ (
new Promise((resolve, reject) => {
/** @type {import("webpack-dev-middleware").API<Request, Response>}*/
(this.middleware).close((error) => {
if (error) {
reject(error);
return;
}
resolve();
});
})
);
this.middleware = null;
}
}
// We add listeners to signals when creating a new Server instance
// So ensure they are removed to prevent EventEmitter memory leak warnings
for (const item of this.listeners) {
process.removeListener(item.name, item.listener);
}
}
/**
* @param {(err?: Error) => void} [callback]
*/
stopCallback(callback = () => {}) {
this.stop()
.then(() => callback(), callback)
.catch(callback);
}
// TODO remove in the next major release
/**
* @param {Port} port
* @param {Host} hostname
* @param {(err?: Error) => void} fn
* @returns {void}
*/
listen(port, hostname, fn) {
util.deprecate(
() => {},
"'listen' is deprecated. Please use the async 'start' or 'startCallback' method.",
"DEP_WEBPACK_DEV_SERVER_LISTEN"
)();
if (typeof port === "function") {
fn = port;
}
if (
typeof port !== "undefined" &&
typeof this.options.port !== "undefined" &&
port !== this.options.port
) {
this.options.port = port;
this.logger.warn(
'The "port" specified in options is different from the port passed as an argument. Will be used from arguments.'
);
}
if (!this.options.port) {
this.options.port = port;
}
if (
typeof hostname !== "undefined" &&
typeof this.options.host !== "undefined" &&
hostname !== this.options.host
) {
this.options.host = hostname;
this.logger.warn(
'The "host" specified in options is different from the host passed as an argument. Will be used from arguments.'
);
}
if (!this.options.host) {
this.options.host = hostname;
}
this.start()
.then(() => {
if (fn) {
fn.call(this.server);
}
})
.catch((error) => {
// Nothing
if (fn) {
fn.call(this.server, error);
}
});
}
/**
* @param {(err?: Error) => void} [callback]
* @returns {void}
*/
// TODO remove in the next major release
close(callback) {
util.deprecate(
() => {},
"'close' is deprecated. Please use the async 'stop' or 'stopCallback' method.",
"DEP_WEBPACK_DEV_SERVER_CLOSE"
)();
this.stop()
.then(() => {
if (callback) {
callback();
}
})
.catch((error) => {
if (callback) {
callback(error);
}
});
}
}
module.exports = Server;
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