fix: allow npm: specifiers in import.meta.resolve (#21716)

Closes https://github.com/denoland/deno/issues/21298.

"npm:" specifiers are matched against import map entries
and if no match is found they are passed through.

2 files changed, 19 insertions, 0 deletions

diff --git a/runtime/web_worker.rs b/runtime/web_worker.rs
index 41e6ca4fe..308c294ef 100644
--- a/runtime/web_worker.rs
+++ b/runtime/web_worker.rs
@@ -5,6 +5,7 @@ use crate::ops;
 use crate::permissions::PermissionsContainer;
 use crate::shared::runtime;
 use crate::tokio_util::create_and_run_current_thread;
+use crate::worker::import_meta_resolve_callback;
 use crate::worker::FormatJsErrorFn;
 use crate::BootstrapOptions;
 use deno_broadcast_channel::InMemoryBroadcastChannel;
@@ -536,6 +537,9 @@ impl WebWorker {
       inspector: options.maybe_inspector_server.is_some(),
       feature_checker: Some(options.feature_checker.clone()),
       op_metrics_factory_fn,
+      import_meta_resolve_callback: Some(Box::new(
+        import_meta_resolve_callback,
+      )),
       ..Default::default()
     });
 
diff --git a/runtime/worker.rs b/runtime/worker.rs
index 237ebfe13..f48f81fe7 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -50,6 +50,18 @@ use crate::BootstrapOptions;
 
 pub type FormatJsErrorFn = dyn Fn(&JsError) -> String + Sync + Send;
 
+pub fn import_meta_resolve_callback(
+  loader: &dyn deno_core::ModuleLoader,
+  specifier: String,
+  referrer: String,
+) -> Result<ModuleSpecifier, AnyError> {
+  loader.resolve(
+    &specifier,
+    &referrer,
+    deno_core::ResolutionKind::DynamicImport,
+  )
+}
+
 #[derive(Clone, Default)]
 pub struct ExitCode(Arc<AtomicI32>);
 
@@ -447,6 +459,9 @@ impl MainWorker {
       wait_for_inspector_disconnect_callback: Some(
         wait_for_inspector_disconnect_callback,
       ),
+      import_meta_resolve_callback: Some(Box::new(
+        import_meta_resolve_callback,
+      )),
       ..Default::default()
     });