feat: Add `deno serve` subcommand (#23511)

By default, `deno serve` will assign port 8000 (like `Deno.serve`).
Users may choose a different port using `--port`.

`deno serve /tmp/file.ts`

`server.ts`:
```ts
export default {
  fetch(req) {
    return new Response("hello world!\n");
  },
};
```

1 files changed, 20 insertions, 2 deletions

diff --git a/cli/worker.rs b/cli/worker.rs
index 7dbb9b177..edc4ef907 100644
--- a/cli/worker.rs
+++ b/cli/worker.rs
@@ -1,5 +1,6 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
+use std::num::NonZeroU16;
 use std::path::Path;
 use std::path::PathBuf;
 use std::rc::Rc;
@@ -40,6 +41,7 @@ use deno_runtime::web_worker::WebWorkerOptions;
 use deno_runtime::worker::MainWorker;
 use deno_runtime::worker::WorkerOptions;
 use deno_runtime::BootstrapOptions;
+use deno_runtime::WorkerExecutionMode;
 use deno_runtime::WorkerLogLevel;
 use deno_semver::npm::NpmPackageReqReference;
 use deno_semver::package::PackageReqReference;
@@ -142,6 +144,8 @@ struct SharedWorkerState {
   disable_deprecated_api_warning: bool,
   verbose_deprecated_api_warning: bool,
   code_cache: Option<Arc<dyn code_cache::CodeCache>>,
+  serve_port: Option<NonZeroU16>,
+  serve_host: Option<String>,
 }
 
 impl SharedWorkerState {
@@ -410,6 +414,8 @@ impl CliMainWorkerFactory {
     feature_checker: Arc<FeatureChecker>,
     options: CliMainWorkerOptions,
     node_ipc: Option<i64>,
+    serve_port: Option<NonZeroU16>,
+    serve_host: Option<String>,
     enable_future_features: bool,
     disable_deprecated_api_warning: bool,
     verbose_deprecated_api_warning: bool,
@@ -434,6 +440,8 @@ impl CliMainWorkerFactory {
         maybe_lockfile,
         feature_checker,
         node_ipc,
+        serve_port,
+        serve_host,
         enable_future_features,
         disable_deprecated_api_warning,
         verbose_deprecated_api_warning,
@@ -444,11 +452,13 @@ impl CliMainWorkerFactory {
 
   pub async fn create_main_worker(
     &self,
+    mode: WorkerExecutionMode,
     main_module: ModuleSpecifier,
     permissions: PermissionsContainer,
   ) -> Result<CliMainWorker, AnyError> {
     self
       .create_custom_worker(
+        mode,
         main_module,
         permissions,
         vec![],
@@ -459,6 +469,7 @@ impl CliMainWorkerFactory {
 
   pub async fn create_custom_worker(
     &self,
+    mode: WorkerExecutionMode,
     main_module: ModuleSpecifier,
     permissions: PermissionsContainer,
     custom_extensions: Vec<Extension>,
@@ -545,7 +556,7 @@ impl CliMainWorkerFactory {
     let maybe_inspector_server = shared.maybe_inspector_server.clone();
 
     let create_web_worker_cb =
-      create_web_worker_callback(shared.clone(), stdio.clone());
+      create_web_worker_callback(mode, shared.clone(), stdio.clone());
 
     let maybe_storage_key = shared
       .storage_key_resolver
@@ -600,6 +611,9 @@ impl CliMainWorkerFactory {
         disable_deprecated_api_warning: shared.disable_deprecated_api_warning,
         verbose_deprecated_api_warning: shared.verbose_deprecated_api_warning,
         future: shared.enable_future_features,
+        mode,
+        serve_port: shared.serve_port,
+        serve_host: shared.serve_host.clone(),
       },
       extensions: custom_extensions,
       startup_snapshot: crate::js::deno_isolate_init(),
@@ -745,6 +759,7 @@ impl CliMainWorkerFactory {
 }
 
 fn create_web_worker_callback(
+  mode: WorkerExecutionMode,
   shared: Arc<SharedWorkerState>,
   stdio: deno_runtime::deno_io::Stdio,
 ) -> Arc<CreateWebWorkerCb> {
@@ -758,7 +773,7 @@ fn create_web_worker_callback(
     let maybe_source_map_getter =
       shared.module_loader_factory.create_source_map_getter();
     let create_web_worker_cb =
-      create_web_worker_callback(shared.clone(), stdio.clone());
+      create_web_worker_callback(mode, shared.clone(), stdio.clone());
 
     let maybe_storage_key = shared
       .storage_key_resolver
@@ -805,6 +820,9 @@ fn create_web_worker_callback(
         disable_deprecated_api_warning: shared.disable_deprecated_api_warning,
         verbose_deprecated_api_warning: shared.verbose_deprecated_api_warning,
         future: shared.enable_future_features,
+        mode,
+        serve_port: shared.serve_port,
+        serve_host: shared.serve_host.clone(),
       },
       extensions: vec![],
       startup_snapshot: crate::js::deno_isolate_init(),