feat(extensions): BroadcastChannel WPT conformance

Replaces the file-backed provider by an in-memory one because proper
file locking is a hard problem that detracts from the proof of concept.

Teach the WPT runner how to extract tests from .html files because all
the relevant tests in test_util/wpt/webmessaging/broadcastchannel are
inside basics.html and interface.html.

4 files changed, 20 insertions, 3 deletions

diff --git a/runtime/build.rs b/runtime/build.rs
index 4fe89af3e..d228fffd6 100644
--- a/runtime/build.rs
+++ b/runtime/build.rs
@@ -52,7 +52,10 @@ fn create_runtime_snapshot(snapshot_path: &Path, files: Vec<PathBuf>) {
     deno_crypto::init(None),
     deno_webgpu::init(false),
     deno_timers::init::<deno_timers::NoTimersPermission>(),
-    deno_broadcast_channel::init(),
+    deno_broadcast_channel::init(
+      deno_broadcast_channel::InMemoryBroadcastChannel::default(),
+      false, // No --unstable.
+    ),
   ];
 
   let js_runtime = JsRuntime::new(RuntimeOptions {
diff --git a/runtime/examples/hello_runtime.rs b/runtime/examples/hello_runtime.rs
index 80a258c17..e8abaffb8 100644
--- a/runtime/examples/hello_runtime.rs
+++ b/runtime/examples/hello_runtime.rs
@@ -2,6 +2,7 @@
 
 use deno_core::error::AnyError;
 use deno_core::FsModuleLoader;
+use deno_runtime::deno_broadcast_channel::InMemoryBroadcastChannel;
 use deno_runtime::deno_file::BlobUrlStore;
 use deno_runtime::permissions::Permissions;
 use deno_runtime::worker::MainWorker;
@@ -42,6 +43,7 @@ async fn main() -> Result<(), AnyError> {
     location: None,
     location_data_dir: None,
     blob_url_store: BlobUrlStore::default(),
+    broadcast_channel: InMemoryBroadcastChannel::default(),
   };
 
   let js_path =
diff --git a/runtime/web_worker.rs b/runtime/web_worker.rs
index 172d24dea..c2356651e 100644
--- a/runtime/web_worker.rs
+++ b/runtime/web_worker.rs
@@ -7,6 +7,7 @@ use crate::metrics;
 use crate::ops;
 use crate::permissions::Permissions;
 use crate::tokio_util::create_basic_runtime;
+use deno_broadcast_channel::InMemoryBroadcastChannel;
 use deno_core::error::AnyError;
 use deno_core::error::Context as ErrorContext;
 use deno_core::futures::channel::mpsc;
@@ -230,6 +231,7 @@ pub struct WebWorkerOptions {
   pub no_color: bool,
   pub get_error_class_fn: Option<GetErrorClassFn>,
   pub blob_url_store: BlobUrlStore,
+  pub broadcast_channel: InMemoryBroadcastChannel,
 }
 
 impl WebWorker {
@@ -268,7 +270,10 @@ impl WebWorker {
         options.user_agent.clone(),
         options.ca_data.clone(),
       ),
-      deno_broadcast_channel::init(),
+      deno_broadcast_channel::init(
+        options.broadcast_channel.clone(),
+        options.unstable,
+      ),
       deno_crypto::init(options.seed),
       deno_webgpu::init(options.unstable),
       deno_timers::init::<Permissions>(),
@@ -567,6 +572,7 @@ mod tests {
       no_color: true,
       get_error_class_fn: None,
       blob_url_store: BlobUrlStore::default(),
+      broadcast_channel: InMemoryBroadcastChannel::default(),
     };
 
     let mut worker = WebWorker::from_options(
diff --git a/runtime/worker.rs b/runtime/worker.rs
index b41f0291c..9ffd0b5ab 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -7,6 +7,7 @@ use crate::js;
 use crate::metrics;
 use crate::ops;
 use crate::permissions::Permissions;
+use deno_broadcast_channel::InMemoryBroadcastChannel;
 use deno_core::error::AnyError;
 use deno_core::error::Context as ErrorContext;
 use deno_core::futures::future::poll_fn;
@@ -71,6 +72,7 @@ pub struct WorkerOptions {
   pub location: Option<Url>,
   pub location_data_dir: Option<std::path::PathBuf>,
   pub blob_url_store: BlobUrlStore,
+  pub broadcast_channel: InMemoryBroadcastChannel,
 }
 
 impl MainWorker {
@@ -107,7 +109,10 @@ impl MainWorker {
       ),
       deno_webstorage::init(options.location_data_dir.clone()),
       deno_crypto::init(options.seed),
-      deno_broadcast_channel::init(),
+      deno_broadcast_channel::init(
+        options.broadcast_channel.clone(),
+        options.unstable,
+      ),
       deno_webgpu::init(options.unstable),
       deno_timers::init::<Permissions>(),
       // Metrics
@@ -296,6 +301,7 @@ mod tests {
       location: None,
       location_data_dir: None,
       blob_url_store: BlobUrlStore::default(),
+      broadcast_channel: InMemoryBroadcastChannel::default(),
     };
 
     MainWorker::from_options(main_module, permissions, &options)