add host config for preview

Author: kenji-yamada

src/commands/preview.ts

@@ -15,7 +15,7 @@ export const preview = async () => {
   const address = server.address();
   if (address && typeof address !== "string") {
     const open = (await import("open")).default;
-    await open(`http://localhost:${address.port}`);
+    await open(`http://${address.address}:${address.port}`);
   }
 
   startLocalChangeWatcher({

src/lib/config.test.ts

@@ -224,6 +224,7 @@ describe("config", () => {
       beforeEach(() => {
         const userConfigData = {
           includePrivate: true,
+          host: "localhost",
           port: 9999,
         };
         resetFiles();
@@ -234,6 +235,7 @@ describe("config", () => {
         const userConfig = await config.getUserConfig();
         expect(userConfig).toStrictEqual({
           includePrivate: true,
+          host: "localhost",
           port: 9999,
         });
       });
@@ -248,6 +250,7 @@ describe("config", () => {
         const userConfig = await config.getUserConfig();
         expect(userConfig).toStrictEqual({
           includePrivate: false,
+          host: "localhost",
           port: 8888,
         });
       });

src/lib/config.ts

@@ -14,6 +14,7 @@ interface Options {
 
 type UserConfig = {
   includePrivate: boolean;
+  host: string;
   port: number;
 };
 
@@ -107,6 +108,7 @@ class Config {
   async getUserConfig() {
     const defaultConfig = {
       includePrivate: false,
+      host: "localhost",
       port: 8888,
     } as UserConfig;
 

src/server/app.ts

@@ -32,8 +32,8 @@ export async function startServer() {
 
   const server = createServer(app);
   const userConfig = await config.getUserConfig();
+  const host = userConfig.host;
   const port = userConfig.port;
-  const host = "localhost";
 
   return new Promise<Server>((resolve, reject) => {
     server