[#21] Adds "hostname" to Server constructor's options

README.md

@@ -362,10 +362,30 @@ within `options` argument:
   path; however, empty `fileDir` value is forbidden: if you really want to serve
   entire documents directory of the app, provide its absolute path explicitly.
 
-- `nonLocal` — **boolean** — Optional. By default, the server is started on
-  `localhost` address, and it is only accessible within the app. With this flag
-  set **true** the server will be started on a local IP adress also accessible
-  from outside the app.
+- `hostname` — **string** — Optional. Sets the address for server
+  to bind to.
+  - By default, if `nonLocal` option is **false**, `hostname` is set equal
+    "`localhost`" — the server binds to the localhost (127.0.0.1)
+    loopback address, and it is accessible only from within the host app.
+  - If `nonLocal` option is **true**, and `hostname` was not given, it is
+    initialized with empty string, and later assigned to a library-selected
+    non-local IP address, at the first launch of the server.
+  - If `hostname` value is provided, the server will bind to the given address,
+    and it will ignore `nonLocal` option.
+
+  _NOTE: In future we'll deprecate `nonLocal` option, and instead will use
+  special `hostname` values to ask the library to automatically select
+  appropriate non-local address._
+
+- `nonLocal` — **boolean** — Optional. By default, if `hostname`
+  option was not provided, the server starts at the "`localhost`" address,
+  and it is only accessible within the host app. With this flag set **true**
+  the server will be started on an IP adress also accessible from outside the app.
+
+  _NOTE: When `hostname` option is set to a value different from "`localhost",
+  the `nonLocal` option is ignored. The plan is to deprecate `nonLocal` option
+  in future, in favour of special `hostname` values supporting the current
+  `nonLocal` functionality._
 
 - `port` — **number** — Optional. The port at which to start the server.
   If 0 (default) an available port will be automatically selected.

src/index.tsx

@@ -202,7 +202,9 @@ class StaticServer {
   _configPath?: string;
   _fileDir: string;
   _hostname = '';
-  _nonLocal: boolean;
+
+  /* DEPRECATED */ _nonLocal: boolean;
+
   _origin: string = '';
   _stopInBackground: boolean;
   _port: number;
@@ -239,6 +241,7 @@ class StaticServer {
     return this._hostname;
   }
 
+  /** @deprecated */
   get nonLocal() {
     return this._nonLocal;
   }
@@ -265,33 +268,28 @@ class StaticServer {
   }
 
   /**
-   * Creates a new StaticServer instance.
-   *
-   * Because the legacy, the following alternative signatures are supported,
-   * and the overall constructor implementation is thus subpar.
-   *
-   * new StaticServer(port, root, opts);
-   * new StaticServer(port, opts);
-   * new StaticServer(port, root);
-   * new StaticServer(opts);
-   * new StaticServer(port);
-   * new StaticServer();
-   *
-   * @param {object} options
+   * Creates a new Server instance.
    */
   constructor({
     fileDir,
-    nonLocal = false,
+    hostname = 'localhost',
+
+    /* DEPRECATED */ nonLocal = false,
+
     port = 0,
     stopInBackground = false,
   }: {
     fileDir: string;
-    nonLocal?: boolean;
+    hostname?: string;
+
+    /* DEPRECATED */ nonLocal?: boolean;
+
     port?: number;
     stopInBackground?: boolean;
   }) {
     this._nonLocal = nonLocal;
-    if (!nonLocal) this._hostname = 'localhost';
+    this._hostname = nonLocal && hostname === 'localhost' ? '' : hostname;
+
     this._port = port;
     this._stopInBackground = stopInBackground;