fix(npm): improved optional dependency support (#19135)

Note: If the package information has already been cached, then this
requires running with `--reload` or for the registry information to be
fetched some other way (ex. the cache busting).

Closes #15544

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

4 files changed, 36 insertions, 26 deletions

diff --git a/cli/npm/resolvers/common.rs b/cli/npm/resolvers/common.rs
index c91b206cf..abfdd6371 100644
--- a/cli/npm/resolvers/common.rs
+++ b/cli/npm/resolvers/common.rs
@@ -69,7 +69,6 @@ pub async fn cache_packages(
 
   let mut handles = Vec::with_capacity(packages.len());
   for package in packages {
-    assert_eq!(package.copy_index, 0); // the caller should not provide any of these
     let cache = cache.clone();
     let registry_url = registry_url.clone();
     let handle = spawn(async move {
diff --git a/cli/npm/resolvers/global.rs b/cli/npm/resolvers/global.rs
index fe8764b0c..22211071a 100644
--- a/cli/npm/resolvers/global.rs
+++ b/cli/npm/resolvers/global.rs
@@ -14,6 +14,7 @@ use deno_npm::resolution::PackageNotFoundFromReferrerError;
 use deno_npm::NpmPackageCacheFolderId;
 use deno_npm::NpmPackageId;
 use deno_npm::NpmResolutionPackage;
+use deno_npm::NpmSystemInfo;
 use deno_runtime::deno_fs::FileSystem;
 use deno_runtime::deno_node::NodePermissions;
 use deno_runtime::deno_node::NodeResolutionMode;
@@ -33,6 +34,7 @@ pub struct GlobalNpmPackageResolver {
   cache: Arc<NpmCache>,
   resolution: Arc<NpmResolution>,
   registry_url: Url,
+  system_info: NpmSystemInfo,
 }
 
 impl GlobalNpmPackageResolver {
@@ -41,12 +43,14 @@ impl GlobalNpmPackageResolver {
     cache: Arc<NpmCache>,
     registry_url: Url,
     resolution: Arc<NpmResolution>,
+    system_info: NpmSystemInfo,
   ) -> Self {
     Self {
       fs,
       cache,
       resolution,
       registry_url,
+      system_info,
     }
   }
 
@@ -125,7 +129,26 @@ impl NpmPackageFsResolver for GlobalNpmPackageResolver {
   }
 
   async fn cache_packages(&self) -> Result<(), AnyError> {
-    cache_packages_in_resolver(self).await
+    let package_partitions = self
+      .resolution
+      .all_system_packages_partitioned(&self.system_info);
+
+    cache_packages(
+      package_partitions.packages,
+      &self.cache,
+      &self.registry_url,
+    )
+    .await?;
+
+    // create the copy package folders
+    for copy in package_partitions.copy_packages {
+      self.cache.ensure_copy_package(
+        &copy.get_package_cache_folder_id(),
+        &self.registry_url,
+      )?;
+    }
+
+    Ok(())
   }
 
   fn ensure_read_permission(
@@ -137,26 +160,3 @@ impl NpmPackageFsResolver for GlobalNpmPackageResolver {
     ensure_registry_read_permission(&self.fs, permissions, &registry_path, path)
   }
 }
-
-async fn cache_packages_in_resolver(
-  resolver: &GlobalNpmPackageResolver,
-) -> Result<(), AnyError> {
-  let package_partitions = resolver.resolution.all_packages_partitioned();
-
-  cache_packages(
-    package_partitions.packages,
-    &resolver.cache,
-    &resolver.registry_url,
-  )
-  .await?;
-
-  // create the copy package folders
-  for copy in package_partitions.copy_packages {
-    resolver.cache.ensure_copy_package(
-      &copy.get_package_cache_folder_id(),
-      &resolver.registry_url,
-    )?;
-  }
-
-  Ok(())
-}
diff --git a/cli/npm/resolvers/local.rs b/cli/npm/resolvers/local.rs
index b2ad08357..e14d7e0c5 100644
--- a/cli/npm/resolvers/local.rs
+++ b/cli/npm/resolvers/local.rs
@@ -24,6 +24,7 @@ use deno_core::url::Url;
 use deno_npm::resolution::NpmResolutionSnapshot;
 use deno_npm::NpmPackageCacheFolderId;
 use deno_npm::NpmPackageId;
+use deno_npm::NpmSystemInfo;
 use deno_runtime::deno_core::futures;
 use deno_runtime::deno_fs;
 use deno_runtime::deno_node::NodePermissions;
@@ -52,6 +53,7 @@ pub struct LocalNpmPackageResolver {
   registry_url: Url,
   root_node_modules_path: PathBuf,
   root_node_modules_url: Url,
+  system_info: NpmSystemInfo,
 }
 
 impl LocalNpmPackageResolver {
@@ -62,6 +64,7 @@ impl LocalNpmPackageResolver {
     registry_url: Url,
     node_modules_folder: PathBuf,
     resolution: Arc<NpmResolution>,
+    system_info: NpmSystemInfo,
   ) -> Self {
     Self {
       fs,
@@ -72,6 +75,7 @@ impl LocalNpmPackageResolver {
       root_node_modules_url: Url::from_directory_path(&node_modules_folder)
         .unwrap(),
       root_node_modules_path: node_modules_folder,
+      system_info,
     }
   }
 
@@ -205,6 +209,7 @@ impl NpmPackageFsResolver for LocalNpmPackageResolver {
       &self.progress_bar,
       &self.registry_url,
       &self.root_node_modules_path,
+      &self.system_info,
     )
     .await
   }
@@ -230,6 +235,7 @@ async fn sync_resolution_with_fs(
   progress_bar: &ProgressBar,
   registry_url: &Url,
   root_node_modules_dir_path: &Path,
+  system_info: &NpmSystemInfo,
 ) -> Result<(), AnyError> {
   if snapshot.is_empty() {
     return Ok(()); // don't create the directory
@@ -254,7 +260,8 @@ async fn sync_resolution_with_fs(
   // Copy (hardlink in future) <global_registry_cache>/<package_id>/ to
   // node_modules/.deno/<package_folder_id_folder_name>/node_modules/<package_name>
   let sync_download = should_sync_download();
-  let mut package_partitions = snapshot.all_packages_partitioned();
+  let mut package_partitions =
+    snapshot.all_system_packages_partitioned(system_info);
   if sync_download {
     // we're running the tests not with --quiet
     // and we want the output to be deterministic
diff --git a/cli/npm/resolvers/mod.rs b/cli/npm/resolvers/mod.rs
index f54e509f0..a41727dda 100644
--- a/cli/npm/resolvers/mod.rs
+++ b/cli/npm/resolvers/mod.rs
@@ -18,6 +18,7 @@ use deno_npm::resolution::NpmResolutionSnapshot;
 use deno_npm::resolution::PackageReqNotFoundError;
 use deno_npm::resolution::SerializedNpmResolutionSnapshot;
 use deno_npm::NpmPackageId;
+use deno_npm::NpmSystemInfo;
 use deno_runtime::deno_fs::FileSystem;
 use deno_runtime::deno_node::NodePermissions;
 use deno_runtime::deno_node::NodeResolutionMode;
@@ -289,6 +290,7 @@ pub fn create_npm_fs_resolver(
   registry_url: Url,
   resolution: Arc<NpmResolution>,
   maybe_node_modules_path: Option<PathBuf>,
+  system_info: NpmSystemInfo,
 ) -> Arc<dyn NpmPackageFsResolver> {
   match maybe_node_modules_path {
     Some(node_modules_folder) => Arc::new(LocalNpmPackageResolver::new(
@@ -298,12 +300,14 @@ pub fn create_npm_fs_resolver(
       registry_url,
       node_modules_folder,
       resolution,
+      system_info,
     )),
     None => Arc::new(GlobalNpmPackageResolver::new(
       fs,
       cache,
       registry_url,
       resolution,
+      system_info,
     )),
   }
 }