Update deno example

example-deno/build.js

@@ -1,5 +1,6 @@
 import * as esbuild from 'https://deno.land/x/esbuild/mod.js'
-import { cache } from './../deno/mod.ts'
+//import { cache } from './../deno/mod.ts'
+import { cache } from 'https://deno.land/x/esbuild_plugin_cache/mod.ts'
 
 const importmap = {
   imports: {
@@ -8,12 +9,14 @@ const importmap = {
   },
 }
 
-esbuild.build({
-  entryPoints: ['./index.tsx'],
-  bundle: true,
-  format: 'esm',
-  plugins: [cache({ importmap, directory: './cache' })],
-  outfile: 'bundle.js',
-})
-
-esbuild.stop()
+esbuild
+  .build({
+    entryPoints: ['./index.tsx'],
+    bundle: true,
+    format: 'esm',
+    plugins: [cache({ importmap, directory: './cache' })],
+    outfile: 'bundle.js',
+  })
+  .then((result, error) => {
+    esbuild.stop()
+  })

example-deno/server.js

@@ -43,12 +43,13 @@ esbuild.serve({ servedir: './' }, {}).then(() => {
       )
       return clients.push(req)
     }
-    const path = ~url.split('/').pop().indexOf('.') ? url : `/index.html`
+    const path = ~url.split('/').pop().indexOf('.') ? url : `/index.html` //for PWA with router
     const res = await fetch('http://localhost:8000' + path, { method, headers })
     const text = await res.text()
     await req.respond({ body: text, statusCode: res.statusCode, headers: res.headers })
   })
   setTimeout(() => {
-    if (clients.length === 0) Deno.run({ cmd: ['cmd', '/c', 'start', `http://localhost:3000`] })
-  }, 2000)
+    const open = { darwin: ['open'], linux: ['xdg-open'], windows: ['cmd', '/c', 'start'] }
+    if (clients.length === 0) Deno.run({ cmd: [...open[Deno.build.os], 'http://localhost:3000'] })
+  }, 2000) //open the browser only if it is not opened yet
 })