feat(lsp): workspace jsr resolution (#24121)

cli/jsr.rs

@@ -3,207 +3,14 @@
 use crate::args::jsr_url;
 use crate::file_fetcher::FileFetcher;
 use dashmap::DashMap;
-use deno_cache_dir::HttpCache;
-use deno_core::parking_lot::Mutex;
 use deno_core::serde_json;
-use deno_core::ModuleSpecifier;
 use deno_graph::packages::JsrPackageInfo;
 use deno_graph::packages::JsrPackageVersionInfo;
-use deno_lockfile::Lockfile;
 use deno_runtime::deno_permissions::PermissionsContainer;
-use deno_semver::jsr::JsrPackageReqReference;
 use deno_semver::package::PackageNv;
 use deno_semver::package::PackageReq;
-use std::borrow::Cow;
 use std::sync::Arc;
 
-/// Keep in sync with `JsrFetchResolver`!
-#[derive(Debug)]
-pub struct JsrCacheResolver {
-  nv_by_req: DashMap<PackageReq, Option<PackageNv>>,
-  /// The `module_graph` field of the version infos should be forcibly absent.
-  /// It can be large and we don't want to store it.
-  info_by_nv: DashMap<PackageNv, Option<Arc<JsrPackageVersionInfo>>>,
-  info_by_name: DashMap<String, Option<Arc<JsrPackageInfo>>>,
-  cache: Arc<dyn HttpCache>,
-}
-
-impl JsrCacheResolver {
-  pub fn new(
-    cache: Arc<dyn HttpCache>,
-    lockfile: Option<Arc<Mutex<Lockfile>>>,
-  ) -> Self {
-    let nv_by_req = DashMap::new();
-    if let Some(lockfile) = lockfile {
-      for (req_url, nv_url) in &lockfile.lock().content.packages.specifiers {
-        let Some(req) = req_url.strip_prefix("jsr:") else {
-          continue;
-        };
-        let Some(nv) = nv_url.strip_prefix("jsr:") else {
-          continue;
-        };
-        let Ok(req) = PackageReq::from_str(req) else {
-          continue;
-        };
-        let Ok(nv) = PackageNv::from_str(nv) else {
-          continue;
-        };
-        nv_by_req.insert(req, Some(nv));
-      }
-    }
-    Self {
-      nv_by_req,
-      info_by_nv: Default::default(),
-      info_by_name: Default::default(),
-      cache: cache.clone(),
-    }
-  }
-
-  pub fn req_to_nv(&self, req: &PackageReq) -> Option<PackageNv> {
-    if let Some(nv) = self.nv_by_req.get(req) {
-      return nv.value().clone();
-    }
-    let maybe_get_nv = || {
-      let name = req.name.clone();
-      let package_info = self.package_info(&name)?;
-      // Find the first matching version of the package which is cached.
-      let mut versions = package_info.versions.keys().collect::<Vec<_>>();
-      versions.sort();
-      let version = versions
-        .into_iter()
-        .rev()
-        .find(|v| {
-          if req.version_req.tag().is_some() || !req.version_req.matches(v) {
-            return false;
-          }
-          let nv = PackageNv {
-            name: name.clone(),
-            version: (*v).clone(),
-          };
-          self.package_version_info(&nv).is_some()
-        })
-        .cloned()?;
-      Some(PackageNv { name, version })
-    };
-    let nv = maybe_get_nv();
-    self.nv_by_req.insert(req.clone(), nv.clone());
-    nv
-  }
-
-  pub fn jsr_to_registry_url(
-    &self,
-    req_ref: &JsrPackageReqReference,
-  ) -> Option<ModuleSpecifier> {
-    let req = req_ref.req().clone();
-    let maybe_nv = self.req_to_nv(&req);
-    let nv = maybe_nv.as_ref()?;
-    let info = self.package_version_info(nv)?;
-    let path = info.export(&normalize_export_name(req_ref.sub_path()))?;
-    jsr_url()
-      .join(&format!("{}/{}/{}", &nv.name, &nv.version, &path))
-      .ok()
-  }
-
-  pub fn lookup_export_for_path(
-    &self,
-    nv: &PackageNv,
-    path: &str,
-  ) -> Option<String> {
-    let info = self.package_version_info(nv)?;
-    let path = path.strip_prefix("./").unwrap_or(path);
-    let mut sloppy_fallback = None;
-    for (export, path_) in info.exports() {
-      let path_ = path_.strip_prefix("./").unwrap_or(path_);
-      if path_ == path {
-        return Some(export.strip_prefix("./").unwrap_or(export).to_string());
-      }
-      // TSC in some cases will suggest a `.js` import path for a `.d.ts` source
-      // file.
-      if sloppy_fallback.is_none() {
-        let path = path
-          .strip_suffix(".js")
-          .or_else(|| path.strip_suffix(".mjs"))
-          .or_else(|| path.strip_suffix(".cjs"))
-          .unwrap_or(path);
-        let path_ = path_
-          .strip_suffix(".d.ts")
-          .or_else(|| path_.strip_suffix(".d.mts"))
-          .or_else(|| path_.strip_suffix(".d.cts"))
-          .unwrap_or(path_);
-        if path_ == path {
-          sloppy_fallback =
-            Some(export.strip_prefix("./").unwrap_or(export).to_string());
-        }
-      }
-    }
-    sloppy_fallback
-  }
-
-  pub fn lookup_req_for_nv(&self, nv: &PackageNv) -> Option<PackageReq> {
-    for entry in self.nv_by_req.iter() {
-      let Some(nv_) = entry.value() else {
-        continue;
-      };
-      if nv_ == nv {
-        return Some(entry.key().clone());
-      }
-    }
-    None
-  }
-
-  pub fn package_info(&self, name: &str) -> Option<Arc<JsrPackageInfo>> {
-    if let Some(info) = self.info_by_name.get(name) {
-      return info.value().clone();
-    }
-    let read_cached_package_info = || {
-      let meta_url = jsr_url().join(&format!("{}/meta.json", name)).ok()?;
-      let meta_bytes = read_cached_url(&meta_url, &self.cache)?;
-      serde_json::from_slice::<JsrPackageInfo>(&meta_bytes).ok()
-    };
-    let info = read_cached_package_info().map(Arc::new);
-    self.info_by_name.insert(name.to_string(), info.clone());
-    info
-  }
-
-  pub fn package_version_info(
-    &self,
-    nv: &PackageNv,
-  ) -> Option<Arc<JsrPackageVersionInfo>> {
-    if let Some(info) = self.info_by_nv.get(nv) {
-      return info.value().clone();
-    }
-    let read_cached_package_version_info = || {
-      let meta_url = jsr_url()
-        .join(&format!("{}/{}_meta.json", &nv.name, &nv.version))
-        .ok()?;
-      let meta_bytes = read_cached_url(&meta_url, &self.cache)?;
-      partial_jsr_package_version_info_from_slice(&meta_bytes).ok()
-    };
-    let info = read_cached_package_version_info().map(Arc::new);
-    self.info_by_nv.insert(nv.clone(), info.clone());
-    info
-  }
-
-  pub fn did_cache(&self) {
-    self.nv_by_req.retain(|_, nv| nv.is_some());
-    self.info_by_nv.retain(|_, info| info.is_some());
-    self.info_by_name.retain(|_, info| info.is_some());
-  }
-}
-
-fn read_cached_url(
-  url: &ModuleSpecifier,
-  cache: &Arc<dyn HttpCache>,
-) -> Option<Vec<u8>> {
-  cache
-    .read_file_bytes(
-      &cache.cache_item_key(url).ok()?,
-      None,
-      deno_cache_dir::GlobalToLocalCopy::Disallow,
-    )
-    .ok()?
-}
-
 /// This is similar to a subset of `JsrCacheResolver` which fetches rather than
 /// just reads the cache. Keep in sync!
 #[derive(Debug)]
@@ -304,33 +111,9 @@ impl JsrFetchResolver {
   }
 }
 
-// TODO(nayeemrmn): This is duplicated from a private function in deno_graph
-// 0.65.1. Make it public or cleanup otherwise.
-fn normalize_export_name(sub_path: Option<&str>) -> Cow<str> {
-  let Some(sub_path) = sub_path else {
-    return Cow::Borrowed(".");
-  };
-  if sub_path.is_empty() || matches!(sub_path, "/" | ".") {
-    Cow::Borrowed(".")
-  } else {
-    let sub_path = if sub_path.starts_with('/') {
-      Cow::Owned(format!(".{}", sub_path))
-    } else if !sub_path.starts_with("./") {
-      Cow::Owned(format!("./{}", sub_path))
-    } else {
-      Cow::Borrowed(sub_path)
-    };
-    if let Some(prefix) = sub_path.strip_suffix('/') {
-      Cow::Owned(prefix.to_string())
-    } else {
-      sub_path
-    }
-  }
-}
-
 /// This is a roundabout way of deserializing `JsrPackageVersionInfo`,
 /// because we only want the `exports` field and `module_graph` is large.
-fn partial_jsr_package_version_info_from_slice(
+pub fn partial_jsr_package_version_info_from_slice(
   slice: &[u8],
 ) -> serde_json::Result<JsrPackageVersionInfo> {
   let mut info = serde_json::from_slice::<serde_json::Value>(slice)?;