feat: Show the URL of streaming WASM modules in stack traces (#12268)

WebAssembly modules compiled through `WebAssembly.compile()` and similar
non-streaming APIs don't have a URL associated to them, because they
have been compiled from a buffer source. In stack traces, V8 will use
a URL such as `wasm://wasm/d1c677ea`, with a hash of the module.

However, wasm modules compiled through streaming APIs, like
`WebAssembly.compileStreaming()`, do have a known URL, which can be
obtained from the `Response` object passed into the streaming APIs. And
as per the developer-facing display conventions in the WebAssembly
Web API spec, this URL should be used in stack traces. This change
implements that.

2 files changed, 19 insertions, 0 deletions

diff --git a/core/lib.deno_core.d.ts b/core/lib.deno_core.d.ts
index efa138d77..6db01df61 100644
--- a/core/lib.deno_core.d.ts
+++ b/core/lib.deno_core.d.ts
@@ -63,6 +63,8 @@ declare namespace Deno {
      *     compiler. Takes the rid and a `Uint8Array`.
      *   - `op_wasm_streaming_abort`. Aborts the wasm compilation. Takes the rid
      *     and an exception. Invalidates the resource.
+     *   - `op_wasm_streaming_set_url`. Sets a source URL for the wasm module.
+     *     Takes the rid and a string.
      *   - To indicate the end of the resource, use `Deno.core.close()` with the
      *     rid.
      */
diff --git a/core/ops_builtin.rs b/core/ops_builtin.rs
index 392062960..bb04cddf4 100644
--- a/core/ops_builtin.rs
+++ b/core/ops_builtin.rs
@@ -26,6 +26,10 @@ pub(crate) fn init_builtins() -> Extension {
       ("op_resources", op_sync(op_resources)),
       ("op_wasm_streaming_feed", op_sync(op_wasm_streaming_feed)),
       ("op_wasm_streaming_abort", op_sync(op_wasm_streaming_abort)),
+      (
+        "op_wasm_streaming_set_url",
+        op_sync(op_wasm_streaming_set_url),
+      ),
     ])
     .build()
 }
@@ -137,3 +141,16 @@ pub fn op_wasm_streaming_abort(
 
   Ok(())
 }
+
+pub fn op_wasm_streaming_set_url(
+  state: &mut OpState,
+  rid: ResourceId,
+  url: String,
+) -> Result<(), AnyError> {
+  let wasm_streaming =
+    state.resource_table.get::<WasmStreamingResource>(rid)?;
+
+  wasm_streaming.0.borrow_mut().set_url(&url);
+
+  Ok(())
+}