Port internal TS code to JS (#6793)

Co-authored-by: Ryan Dahl <ry@tinyclouds.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/cli/js2/40_diagnostics.js b/cli/js2/40_diagnostics.js
new file mode 100644
index 000000000..110d3d767
--- /dev/null
+++ b/cli/js2/40_diagnostics.js
@@ -0,0 +1,27 @@
+// 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: "Log",
+    1: "Debug",
+    2: "Info",
+    3: "Error",
+    4: "Warning",
+    5: "Suggestion",
+
+    Log: 0,
+    Debug: 1,
+    Info: 2,
+    Error: 3,
+    Warning: 4,
+    Suggestion: 5,
+  };
+
+  window.__bootstrap.diagnostics = {
+    DiagnosticCategory,
+  };
+})(this);