1 files changed, 23 insertions, 0 deletions
diff --git a/runtime/rt/40_diagnostics.js b/runtime/rt/40_diagnostics.js
new file mode 100644
index 000000000..2b7457853
--- /dev/null
+++ b/runtime/rt/40_diagnostics.js
@@ -0,0 +1,23 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+// Diagnostic provides an abstraction for advice/errors received from a
+// compiler, which is strongly influenced by the format of TypeScript
+// diagnostics.
+
+((window) => {
+  const DiagnosticCategory = {
+    0: "Warning",
+    1: "Error",
+    2: "Suggestion",
+    3: "Message",
+
+    Warning: 0,
+    Error: 1,
+    Suggestion: 2,
+    Message: 3,
+  };
+
+  window.__bootstrap.diagnostics = {
+    DiagnosticCategory,
+  };
+})(this);