feat(lsp): jsr support first pass (#22382)

This implementation heavily depends on there being a lockfile, meaning
JSR specifiers will always diagnose as uncached unless it's there. In
practice this affects cases where a `deno.json` isn't being used. Our
NPM specifier support isn't subject to this.

The reason for this is that the version constraint solving code is
currently buried in `deno_graph` and not usable from the LSP, so the
only way to reuse that logic is the solved-version map in the lockfile's
`packages.specifiers`.

1 files changed, 15 insertions, 4 deletions

diff --git a/cli/lsp/diagnostics.rs b/cli/lsp/diagnostics.rs
index 0c193040b..0b3faa551 100644
--- a/cli/lsp/diagnostics.rs
+++ b/cli/lsp/diagnostics.rs
@@ -42,6 +42,7 @@ use deno_lint::rules::LintRule;
 use deno_runtime::deno_fs;
 use deno_runtime::deno_node;
 use deno_runtime::tokio_util::create_basic_runtime;
+use deno_semver::jsr::JsrPackageReqReference;
 use deno_semver::npm::NpmPackageReqReference;
 use deno_semver::package::PackageReq;
 use log::error;
@@ -329,6 +330,8 @@ impl DiagnosticsState {
       if diagnostic.code
         == Some(lsp::NumberOrString::String("no-cache".to_string()))
         || diagnostic.code
+          == Some(lsp::NumberOrString::String("no-cache-jsr".to_string()))
+        || diagnostic.code
           == Some(lsp::NumberOrString::String("no-cache-npm".to_string()))
       {
         no_cache_diagnostics.push(diagnostic.clone());
@@ -968,6 +971,8 @@ pub enum DenoDiagnostic {
   NoAttributeType,
   /// A remote module was not found in the cache.
   NoCache(ModuleSpecifier),
+  /// A remote jsr package reference was not found in the cache.
+  NoCacheJsr(PackageReq, ModuleSpecifier),
   /// A remote npm package reference was not found in the cache.
   NoCacheNpm(PackageReq, ModuleSpecifier),
   /// A local module was not found on the local file system.
@@ -994,6 +999,7 @@ impl DenoDiagnostic {
       Self::InvalidAttributeType(_) => "invalid-attribute-type",
       Self::NoAttributeType => "no-attribute-type",
       Self::NoCache(_) => "no-cache",
+      Self::NoCacheJsr(_, _) => "no-cache-jsr",
       Self::NoCacheNpm(_, _) => "no-cache-npm",
       Self::NoLocal(_) => "no-local",
       Self::Redirect { .. } => "redirect",
@@ -1072,7 +1078,7 @@ impl DenoDiagnostic {
           }),
           ..Default::default()
         },
-        "no-cache" | "no-cache-npm" => {
+        "no-cache" | "no-cache-jsr" | "no-cache-npm" => {
           let data = diagnostic
             .data
             .clone()
@@ -1188,6 +1194,7 @@ impl DenoDiagnostic {
       match code.as_str() {
         "import-map-remap"
         | "no-cache"
+        | "no-cache-jsr"
         | "no-cache-npm"
         | "no-attribute-type"
         | "redirect"
@@ -1226,6 +1233,7 @@ impl DenoDiagnostic {
       Self::InvalidAttributeType(assert_type) => (lsp::DiagnosticSeverity::ERROR, format!("The module is a JSON module and expected an attribute type of \"json\". Instead got \"{assert_type}\"."), None),
       Self::NoAttributeType => (lsp::DiagnosticSeverity::ERROR, "The module is a JSON module and not being imported with an import attribute. Consider adding `with { type: \"json\" }` to the import statement.".to_string(), None),
       Self::NoCache(specifier) => (lsp::DiagnosticSeverity::ERROR, format!("Uncached or missing remote URL: {specifier}"), Some(json!({ "specifier": specifier }))),
+      Self::NoCacheJsr(pkg_req, specifier) => (lsp::DiagnosticSeverity::ERROR, format!("Uncached or missing jsr package: {}", pkg_req), Some(json!({ "specifier": specifier }))),
       Self::NoCacheNpm(pkg_req, specifier) => (lsp::DiagnosticSeverity::ERROR, format!("Uncached or missing npm package: {}", pkg_req), Some(json!({ "specifier": specifier }))),
       Self::NoLocal(specifier) => {
         let sloppy_resolution = SloppyImportsResolver::resolve_with_fs(&deno_fs::RealFs, specifier);
@@ -1310,7 +1318,7 @@ fn diagnose_resolution(
         // If the module was redirected, we want to issue an informational
         // diagnostic that indicates this. This then allows us to issue a code
         // action to replace the specifier with the final redirected one.
-        if doc_specifier != specifier {
+        if specifier.scheme() != "jsr" && doc_specifier != specifier {
           diagnostics.push(DenoDiagnostic::Redirect {
             from: specifier.clone(),
             to: doc_specifier.clone(),
@@ -1332,8 +1340,11 @@ fn diagnose_resolution(
             None => diagnostics.push(DenoDiagnostic::NoAttributeType),
           }
         }
-      } else if specifier.scheme() == "jsr" {
-        // TODO(nayeemrmn): Check if jsr specifiers are cached.
+      } else if let Ok(pkg_ref) =
+        JsrPackageReqReference::from_specifier(specifier)
+      {
+        let req = pkg_ref.into_inner().req;
+        diagnostics.push(DenoDiagnostic::NoCacheJsr(req, specifier.clone()));
       } else if let Ok(pkg_ref) =
         NpmPackageReqReference::from_specifier(specifier)
       {