1 files changed, 328 insertions, 0 deletions
diff --git a/cli/lsp/resolver.rs b/cli/lsp/resolver.rs
new file mode 100644
index 000000000..076d48bb4
--- /dev/null
+++ b/cli/lsp/resolver.rs
@@ -0,0 +1,328 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+use crate::args::package_json;
+use crate::args::CacheSetting;
+use crate::cache::DenoDir;
+use crate::cache::FastInsecureHasher;
+use crate::http_util::HttpClient;
+use crate::lsp::config::Config;
+use crate::lsp::config::ConfigData;
+use crate::lsp::logging::lsp_warn;
+use crate::npm::create_cli_npm_resolver_for_lsp;
+use crate::npm::CliNpmResolver;
+use crate::npm::CliNpmResolverByonmCreateOptions;
+use crate::npm::CliNpmResolverCreateOptions;
+use crate::npm::CliNpmResolverManagedCreateOptions;
+use crate::npm::CliNpmResolverManagedPackageJsonInstallerOption;
+use crate::npm::CliNpmResolverManagedSnapshotOption;
+use crate::npm::ManagedCliNpmResolver;
+use crate::resolver::CliGraphResolver;
+use crate::resolver::CliGraphResolverOptions;
+use crate::resolver::CliNodeResolver;
+use crate::util::progress_bar::ProgressBar;
+use crate::util::progress_bar::ProgressBarStyle;
+use deno_core::error::AnyError;
+use deno_graph::source::NpmResolver;
+use deno_graph::source::Resolver;
+use deno_graph::ModuleSpecifier;
+use deno_npm::NpmSystemInfo;
+use deno_runtime::deno_fs;
+use deno_runtime::deno_node::NodeResolution;
+use deno_runtime::deno_node::NodeResolutionMode;
+use deno_runtime::deno_node::NodeResolver;
+use deno_runtime::deno_node::PackageJson;
+use deno_runtime::fs_util::specifier_to_file_path;
+use deno_runtime::permissions::PermissionsContainer;
+use deno_semver::npm::NpmPackageReqReference;
+use deno_semver::package::PackageReq;
+use package_json::PackageJsonDepsProvider;
+use std::path::Path;
+use std::rc::Rc;
+use std::sync::Arc;
+
+#[derive(Debug, Clone)]
+pub struct LspResolver {
+  graph_resolver: Arc<CliGraphResolver>,
+  npm_resolver: Option<Arc<dyn CliNpmResolver>>,
+  node_resolver: Option<Arc<CliNodeResolver>>,
+  npm_config_hash: LspNpmConfigHash,
+  config: Arc<Config>,
+}
+
+impl Default for LspResolver {
+  fn default() -> Self {
+    Self {
+      graph_resolver: create_graph_resolver(&Default::default(), None, None),
+      npm_resolver: None,
+      node_resolver: None,
+      npm_config_hash: LspNpmConfigHash(0),
+      config: Default::default(),
+    }
+  }
+}
+
+impl LspResolver {
+  pub async fn with_new_config(
+    &self,
+    config: &Config,
+    global_cache_path: Option<&Path>,
+    http_client: Option<&Arc<HttpClient>>,
+  ) -> Arc<Self> {
+    let npm_config_hash = LspNpmConfigHash::new(config, global_cache_path);
+    let mut npm_resolver = None;
+    let mut node_resolver = None;
+    if npm_config_hash != self.npm_config_hash {
+      if let (Some(http_client), Some(config_data)) =
+        (http_client, config.tree.root_data())
+      {
+        npm_resolver =
+          create_npm_resolver(config_data, global_cache_path, http_client)
+            .await;
+        node_resolver = create_node_resolver(npm_resolver.as_ref());
+      }
+    } else {
+      npm_resolver = self.npm_resolver.clone();
+      node_resolver = self.node_resolver.clone();
+    }
+    let graph_resolver = create_graph_resolver(
+      config,
+      npm_resolver.as_ref(),
+      node_resolver.as_ref(),
+    );
+    Arc::new(Self {
+      graph_resolver,
+      npm_resolver,
+      node_resolver,
+      npm_config_hash,
+      config: Arc::new(config.clone()),
+    })
+  }
+
+  pub fn snapshot(&self) -> Arc<Self> {
+    let npm_resolver =
+      self.npm_resolver.as_ref().map(|r| r.clone_snapshotted());
+    let node_resolver = create_node_resolver(npm_resolver.as_ref());
+    let graph_resolver = create_graph_resolver(
+      &self.config,
+      npm_resolver.as_ref(),
+      node_resolver.as_ref(),
+    );
+    Arc::new(Self {
+      graph_resolver,
+      npm_resolver,
+      node_resolver,
+      npm_config_hash: self.npm_config_hash.clone(),
+      config: self.config.clone(),
+    })
+  }
+
+  pub async fn set_npm_package_reqs(
+    &self,
+    reqs: &[PackageReq],
+  ) -> Result<(), AnyError> {
+    if let Some(npm_resolver) = self.npm_resolver.as_ref() {
+      if let Some(npm_resolver) = npm_resolver.as_managed() {
+        return npm_resolver.set_package_reqs(reqs).await;
+      }
+    }
+    Ok(())
+  }
+
+  pub fn as_graph_resolver(&self) -> &dyn Resolver {
+    self.graph_resolver.as_ref()
+  }
+
+  pub fn as_graph_npm_resolver(&self) -> &dyn NpmResolver {
+    self.graph_resolver.as_ref()
+  }
+
+  pub fn maybe_managed_npm_resolver(&self) -> Option<&ManagedCliNpmResolver> {
+    self.npm_resolver.as_ref().and_then(|r| r.as_managed())
+  }
+
+  pub fn in_npm_package(&self, specifier: &ModuleSpecifier) -> bool {
+    if let Some(npm_resolver) = &self.npm_resolver {
+      return npm_resolver.in_npm_package(specifier);
+    }
+    false
+  }
+
+  pub fn node_resolve(
+    &self,
+    specifier: &str,
+    referrer: &ModuleSpecifier,
+    mode: NodeResolutionMode,
+  ) -> Result<Option<NodeResolution>, AnyError> {
+    let Some(node_resolver) = self.node_resolver.as_ref() else {
+      return Ok(None);
+    };
+    node_resolver.resolve(
+      specifier,
+      referrer,
+      mode,
+      &PermissionsContainer::allow_all(),
+    )
+  }
+
+  pub fn resolve_npm_req_reference(
+    &self,
+    req_ref: &NpmPackageReqReference,
+    referrer: &ModuleSpecifier,
+    mode: NodeResolutionMode,
+  ) -> Result<Option<NodeResolution>, AnyError> {
+    let Some(node_resolver) = self.node_resolver.as_ref() else {
+      return Ok(None);
+    };
+    node_resolver
+      .resolve_req_reference(
+        req_ref,
+        &PermissionsContainer::allow_all(),
+        referrer,
+        mode,
+      )
+      .map(Some)
+  }
+
+  pub fn url_to_node_resolution(
+    &self,
+    specifier: ModuleSpecifier,
+  ) -> Result<Option<NodeResolution>, AnyError> {
+    let Some(node_resolver) = self.node_resolver.as_ref() else {
+      return Ok(None);
+    };
+    node_resolver.url_to_node_resolution(specifier).map(Some)
+  }
+
+  pub fn get_closest_package_json(
+    &self,
+    referrer: &ModuleSpecifier,
+  ) -> Result<Option<Rc<PackageJson>>, AnyError> {
+    let Some(node_resolver) = self.node_resolver.as_ref() else {
+      return Ok(None);
+    };
+    node_resolver
+      .get_closest_package_json(referrer, &PermissionsContainer::allow_all())
+  }
+}
+
+async fn create_npm_resolver(
+  config_data: &ConfigData,
+  global_cache_path: Option<&Path>,
+  http_client: &Arc<HttpClient>,
+) -> Option<Arc<dyn CliNpmResolver>> {
+  let deno_dir = DenoDir::new(global_cache_path.map(|p| p.to_owned()))
+    .inspect_err(|err| {
+      lsp_warn!("Error getting deno dir: {:#}", err);
+    })
+    .ok()?;
+  let node_modules_dir = config_data
+    .node_modules_dir
+    .clone()
+    .or_else(|| specifier_to_file_path(&config_data.scope).ok())?;
+  let options = if config_data.byonm {
+    CliNpmResolverCreateOptions::Byonm(CliNpmResolverByonmCreateOptions {
+      fs: Arc::new(deno_fs::RealFs),
+      root_node_modules_dir: node_modules_dir,
+    })
+  } else {
+    CliNpmResolverCreateOptions::Managed(CliNpmResolverManagedCreateOptions {
+      http_client: http_client.clone(),
+      snapshot: match config_data.lockfile.as_ref() {
+        Some(lockfile) => {
+          CliNpmResolverManagedSnapshotOption::ResolveFromLockfile(
+            lockfile.clone(),
+          )
+        }
+        None => CliNpmResolverManagedSnapshotOption::Specified(None),
+      },
+      // Don't provide the lockfile. We don't want these resolvers
+      // updating it. Only the cache request should update the lockfile.
+      maybe_lockfile: None,
+      fs: Arc::new(deno_fs::RealFs),
+      npm_global_cache_dir: deno_dir.npm_folder_path(),
+      // Use an "only" cache setting in order to make the
+      // user do an explicit "cache" command and prevent
+      // the cache from being filled with lots of packages while
+      // the user is typing.
+      cache_setting: CacheSetting::Only,
+      text_only_progress_bar: ProgressBar::new(ProgressBarStyle::TextOnly),
+      maybe_node_modules_path: config_data.node_modules_dir.clone(),
+      // do not install while resolving in the lsp—leave that to the cache command
+      package_json_installer:
+        CliNpmResolverManagedPackageJsonInstallerOption::NoInstall,
+      npm_registry_url: crate::args::npm_registry_url().to_owned(),
+      npm_system_info: NpmSystemInfo::default(),
+    })
+  };
+  Some(create_cli_npm_resolver_for_lsp(options).await)
+}
+
+fn create_node_resolver(
+  npm_resolver: Option<&Arc<dyn CliNpmResolver>>,
+) -> Option<Arc<CliNodeResolver>> {
+  let npm_resolver = npm_resolver?;
+  let fs = Arc::new(deno_fs::RealFs);
+  let node_resolver_inner = Arc::new(NodeResolver::new(
+    fs.clone(),
+    npm_resolver.clone().into_npm_resolver(),
+  ));
+  Some(Arc::new(CliNodeResolver::new(
+    None,
+    fs,
+    node_resolver_inner,
+    npm_resolver.clone(),
+  )))
+}
+
+fn create_graph_resolver(
+  config: &Config,
+  npm_resolver: Option<&Arc<dyn CliNpmResolver>>,
+  node_resolver: Option<&Arc<CliNodeResolver>>,
+) -> Arc<CliGraphResolver> {
+  let config_data = config.tree.root_data();
+  let config_file = config_data.and_then(|d| d.config_file.as_deref());
+  Arc::new(CliGraphResolver::new(CliGraphResolverOptions {
+    node_resolver: node_resolver.cloned(),
+    npm_resolver: npm_resolver.cloned(),
+    package_json_deps_provider: Arc::new(PackageJsonDepsProvider::new(
+      config_data
+        .and_then(|d| d.package_json.as_ref())
+        .map(|package_json| {
+          package_json::get_local_package_json_version_reqs(package_json)
+        }),
+    )),
+    maybe_jsx_import_source_config: config_file
+      .and_then(|cf| cf.to_maybe_jsx_import_source_config().ok().flatten()),
+    maybe_import_map: config_data.and_then(|d| d.import_map.clone()),
+    maybe_vendor_dir: config_data.and_then(|d| d.vendor_dir.as_ref()),
+    bare_node_builtins_enabled: config_file
+      .map(|config| config.has_unstable("bare-node-builtins"))
+      .unwrap_or(false),
+    // Don't set this for the LSP because instead we'll use the OpenDocumentsLoader
+    // because it's much easier and we get diagnostics/quick fixes about a redirected
+    // specifier for free.
+    sloppy_imports_resolver: None,
+  }))
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+struct LspNpmConfigHash(u64);
+
+impl LspNpmConfigHash {
+  pub fn new(config: &Config, global_cache_path: Option<&Path>) -> Self {
+    let config_data = config.tree.root_data();
+    let scope = config_data.map(|d| &d.scope);
+    let node_modules_dir =
+      config_data.and_then(|d| d.node_modules_dir.as_ref());
+    let lockfile = config_data.and_then(|d| d.lockfile.as_ref());
+    let mut hasher = FastInsecureHasher::new();
+    hasher.write_hashable(scope);
+    hasher.write_hashable(node_modules_dir);
+    hasher.write_hashable(global_cache_path);
+    if let Some(lockfile) = lockfile {
+      hasher.write_hashable(&*lockfile.lock());
+    }
+    hasher.write_hashable(global_cache_path);
+    Self(hasher.finish())
+  }
+}