1 files changed, 21 insertions, 1 deletions
diff --git a/cli/proc_state.rs b/cli/proc_state.rs
index 253878872..6e8507810 100644
--- a/cli/proc_state.rs
+++ b/cli/proc_state.rs
@@ -51,6 +51,7 @@ use deno_runtime::deno_web::BlobStore;
 use deno_runtime::inspector_server::InspectorServer;
 use deno_runtime::permissions::Permissions;
 use import_map::ImportMap;
+use log::warn;
 use std::collections::HashSet;
 use std::env;
 use std::fs::File;
@@ -230,7 +231,7 @@ impl ProcState {
               import_map_specifier
             ))?;
           let import_map =
-            ImportMap::from_json(import_map_specifier.as_str(), &file.source)?;
+            import_map_from_text(&import_map_specifier, &file.source)?;
           Some(Arc::new(import_map))
         }
       };
@@ -676,6 +677,25 @@ impl SourceMapGetter for ProcState {
   }
 }
 
+pub fn import_map_from_text(
+  specifier: &Url,
+  json_text: &str,
+) -> Result<ImportMap, AnyError> {
+  let result = ImportMap::from_json_with_diagnostics(specifier, json_text)?;
+  if !result.diagnostics.is_empty() {
+    warn!(
+      "Import map diagnostics:\n{}",
+      result
+        .diagnostics
+        .into_iter()
+        .map(|d| format!("  - {}", d))
+        .collect::<Vec<_>>()
+        .join("\n")
+    )
+  }
+  Ok(result.import_map)
+}
+
 fn source_map_from_code(code: String) -> Option<Vec<u8>> {
   let lines: Vec<&str> = code.split('\n').collect();
   if let Some(last_line) = lines.last() {