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.

6 files changed, 24 insertions, 47 deletions

diff --git a/cli/tests/integration/run_tests.rs b/cli/tests/integration/run_tests.rs
index 8c337b771..f247aa93f 100644
--- a/cli/tests/integration/run_tests.rs
+++ b/cli/tests/integration/run_tests.rs
@@ -856,11 +856,18 @@ itest!(wasm_async {
 });
 
 itest!(wasm_unreachable {
-  args: "run wasm_unreachable.js",
+  args: "run --allow-read wasm_unreachable.js",
   output: "wasm_unreachable.out",
   exit_code: 1,
 });
 
+itest!(wasm_url {
+  args: "run --quiet --allow-net=localhost:4545 wasm_url.js",
+  output: "wasm_url.out",
+  exit_code: 1,
+  http_server: true,
+});
+
 itest!(weakref {
   args: "run --quiet --reload weakref.ts",
   output: "weakref.ts.out",
diff --git a/cli/tests/testdata/unreachable.wasm b/cli/tests/testdata/unreachable.wasm
new file mode 100644
index 000000000..a4110ee39
--- /dev/null
+++ b/cli/tests/testdata/unreachable.wasm
diff --git a/cli/tests/testdata/wasm_unreachable.js b/cli/tests/testdata/wasm_unreachable.js
index 991ebcec8..36aab0d84 100644
--- a/cli/tests/testdata/wasm_unreachable.js
+++ b/cli/tests/testdata/wasm_unreachable.js
@@ -1,50 +1,9 @@
 // WebAssembly module containing a single function with an unreachable instruction
-const binary = Uint8Array.from([
-  0x00,
-  0x61,
-  0x73,
-  0x6d,
-  0x01,
-  0x00,
-  0x00,
-  0x00,
-  0x01,
-  0x04,
-  0x01,
-  0x60,
-  0x00,
-  0x00,
-  0x03,
-  0x02,
-  0x01,
-  0x00,
-  0x07,
-  0x0f,
-  0x01,
-  0x0b,
-  0x75,
-  0x6e,
-  0x72,
-  0x65,
-  0x61,
-  0x63,
-  0x68,
-  0x61,
-  0x62,
-  0x6c,
-  0x65,
-  0x00,
-  0x00,
-  0x0a,
-  0x05,
-  0x01,
-  0x03,
-  0x00,
-  0x00,
-  0x0b,
-]);
+const binary = await Deno.readFile("./unreachable.wasm");
 
 const module = new WebAssembly.Module(binary);
 const instance = new WebAssembly.Instance(module);
 
+// Compare the stack trace with wasm_url.js, which compiles the WASM module with
+// streaming APIs.
 instance.exports.unreachable();
diff --git a/cli/tests/testdata/wasm_unreachable.out b/cli/tests/testdata/wasm_unreachable.out
index 28fe00de6..cbb6b6519 100644
--- a/cli/tests/testdata/wasm_unreachable.out
+++ b/cli/tests/testdata/wasm_unreachable.out
@@ -1,3 +1,3 @@
-error: Uncaught RuntimeError: unreachable
-    at <anonymous> (wasm://wasm/[WILDCARD])
+error: Uncaught (in promise) RuntimeError: unreachable
+    at <anonymous> (wasm://wasm/d1c677ea:1:41)
     at [WILDCARD]/wasm_unreachable.js:[WILDCARD]
diff --git a/cli/tests/testdata/wasm_url.js b/cli/tests/testdata/wasm_url.js
new file mode 100644
index 000000000..bb7ccd73d
--- /dev/null
+++ b/cli/tests/testdata/wasm_url.js
@@ -0,0 +1,8 @@
+const module = await WebAssembly.compileStreaming(
+  fetch("http://localhost:4545/unreachable.wasm"),
+);
+const instance = new WebAssembly.Instance(module);
+
+// Compare the stack trace with wasm_unreachable.js, which compiles the WASM
+// module with synchronous APIs.
+instance.exports.unreachable();
diff --git a/cli/tests/testdata/wasm_url.out b/cli/tests/testdata/wasm_url.out
new file mode 100644
index 000000000..c88b51020
--- /dev/null
+++ b/cli/tests/testdata/wasm_url.out
@@ -0,0 +1,3 @@
+error: Uncaught (in promise) RuntimeError: unreachable
+    at <anonymous> (http://localhost:4545/unreachable.wasm:1:41)
+    at [WILDCARD]/wasm_url.js:[WILDCARD]