refactor(resolver): improve and expose details of CouldNotResolveError (denoland#30410)

Need this for deno-js-loader.

Author: dsherret

libs/resolver/graph.rs

@@ -25,6 +25,7 @@ use node_resolver::InNpmPackageChecker;
 use node_resolver::IsBuiltInNodeModuleChecker;
 use node_resolver::NpmPackageFolderResolver;
 use node_resolver::UrlOrPath;
+use node_resolver::errors::NodeJsErrorCoded;
 use url::Url;
 
 use crate::DenoResolveError;
@@ -51,7 +52,7 @@ pub struct ResolveWithGraphError(pub Box<ResolveWithGraphErrorKind>);
 impl ResolveWithGraphError {
   pub fn maybe_specifier(&self) -> Option<Cow<'_, UrlOrPath>> {
     match self.as_kind() {
-      ResolveWithGraphErrorKind::CouldNotResolve(err) => {
+      ResolveWithGraphErrorKind::CouldNotResolveNpmNv(err) => {
         err.source.maybe_specifier()
       }
       ResolveWithGraphErrorKind::ResolveNpmReqRef(err) => {
@@ -85,7 +86,7 @@ impl ResolveWithGraphError {
 pub enum ResolveWithGraphErrorKind {
   #[error(transparent)]
   #[class(inherit)]
-  CouldNotResolve(#[from] CouldNotResolveError),
+  CouldNotResolveNpmNv(#[from] CouldNotResolveNpmNvError),
   #[error(transparent)]
   #[class(inherit)]
   ResolvePkgFolderFromDenoModule(
@@ -108,11 +109,17 @@ pub enum ResolveWithGraphErrorKind {
 #[derive(Debug, thiserror::Error, deno_error::JsError)]
 #[class(inherit)]
 #[error("Could not resolve '{reference}'")]
-pub struct CouldNotResolveError {
-  reference: deno_semver::npm::NpmPackageNvReference,
+pub struct CouldNotResolveNpmNvError {
+  pub reference: deno_semver::npm::NpmPackageNvReference,
   #[source]
   #[inherit]
-  source: node_resolver::errors::PackageSubpathFromDenoModuleResolveError,
+  pub source: node_resolver::errors::PackageSubpathFromDenoModuleResolveError,
+}
+
+impl NodeJsErrorCoded for CouldNotResolveNpmNvError {
+  fn code(&self) -> node_resolver::errors::NodeJsErrorCode {
+    self.source.code()
+  }
 }
 
 impl FoundPackageJsonDepFlag {
@@ -359,7 +366,7 @@ impl<
           resolution_mode,
           resolution_kind,
         )
-        .map_err(|source| CouldNotResolveError {
+        .map_err(|source| CouldNotResolveNpmNvError {
           reference: nv_ref.clone(),
           source,
         })?