feat(lsp): node specifier completions (#24904)

1 files changed, 37 insertions, 0 deletions

diff --git a/cli/lsp/completions.rs b/cli/lsp/completions.rs
index a51edcb33..88900ceef 100644
--- a/cli/lsp/completions.rs
+++ b/cli/lsp/completions.rs
@@ -18,6 +18,7 @@ use crate::util::path::is_importable_ext;
 use crate::util::path::relative_specifier;
 use deno_graph::source::ResolutionMode;
 use deno_graph::Range;
+use deno_runtime::deno_node::SUPPORTED_BUILTIN_NODE_MODULES;
 use deno_runtime::fs_util::specifier_to_file_path;
 
 use deno_ast::LineAndColumnIndex;
@@ -192,6 +193,8 @@ pub async fn get_import_completions(
     get_npm_completions(specifier, &text, &range, npm_search_api).await
   {
     Some(lsp::CompletionResponse::List(completion_list))
+  } else if let Some(completion_list) = get_node_completions(&text, &range) {
+    Some(lsp::CompletionResponse::List(completion_list))
   } else if let Some(completion_list) =
     get_import_map_completions(specifier, &text, &range, maybe_import_map)
   {
@@ -732,6 +735,40 @@ async fn get_npm_completions(
   })
 }
 
+/// Get completions for `node:` specifiers.
+fn get_node_completions(
+  specifier: &str,
+  range: &lsp::Range,
+) -> Option<CompletionList> {
+  if !specifier.starts_with("node:") {
+    return None;
+  }
+  let items = SUPPORTED_BUILTIN_NODE_MODULES
+    .iter()
+    .map(|name| {
+      let specifier = format!("node:{}", name);
+      let text_edit = Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
+        range: *range,
+        new_text: specifier.clone(),
+      }));
+      lsp::CompletionItem {
+        label: specifier,
+        kind: Some(lsp::CompletionItemKind::FILE),
+        detail: Some("(node)".to_string()),
+        text_edit,
+        commit_characters: Some(
+          IMPORT_COMMIT_CHARS.iter().map(|&c| c.into()).collect(),
+        ),
+        ..Default::default()
+      }
+    })
+    .collect();
+  Some(CompletionList {
+    is_incomplete: false,
+    items,
+  })
+}
+
 /// Get workspace completions that include modules in the Deno cache which match
 /// the current specifier string.
 fn get_workspace_completions(