1 files changed, 51 insertions, 0 deletions
diff --git a/cli/tests/integration/lsp_tests.rs b/cli/tests/integration/lsp_tests.rs
index 11cb09994..433088fe9 100644
--- a/cli/tests/integration/lsp_tests.rs
+++ b/cli/tests/integration/lsp_tests.rs
@@ -7735,6 +7735,57 @@ fn lsp_diagnostics_refresh_dependents() {
 }
 
 #[test]
+fn lsp_npm_missing_type_imports_diagnostics() {
+  let context = TestContextBuilder::new()
+    .use_http_server()
+    .use_temp_cwd()
+    .build();
+  let mut client = context.new_lsp_command().build();
+  client.initialize_default();
+  client.did_open(json!({
+    "textDocument": {
+      "uri": "file:///a/file.ts",
+      "languageId": "typescript",
+      "version": 1,
+      "text": r#"
+        import colorName, { type RGB } from 'npm:color-name';
+        const color: RGB = colorName.black;
+        console.log(color);
+      "#,
+    },
+  }));
+  client.write_request(
+    "workspace/executeCommand",
+    json!({
+      "command": "deno.cache",
+      "arguments": [[], "file:///a/file.ts"],
+    }),
+  );
+  let diagnostics = client.read_diagnostics();
+  assert_eq!(
+    json!(
+      diagnostics.messages_with_file_and_source("file:///a/file.ts", "deno-ts")
+    ),
+    json!({
+      "uri": "file:///a/file.ts",
+      "diagnostics": [
+        {
+          "range": {
+            "start": { "line": 1, "character": 33 },
+            "end": { "line": 1, "character": 36 },
+          },
+          "severity": 1,
+          "code": 2305,
+          "source": "deno-ts",
+          "message": "Module '\"npm:color-name\"' has no exported member 'RGB'.",
+        },
+      ],
+      "version": 1,
+    })
+  );
+}
+
+#[test]
 fn lsp_jupyter_diagnostics() {
   let context = TestContextBuilder::new().use_temp_cwd().build();
   let mut client = context.new_lsp_command().build();