feat: Add Deno.formatDiagnostics (#4032)

1 files changed, 9 insertions, 0 deletions

diff --git a/cli/js/format_error.ts b/cli/js/format_error.ts
index d1d5a73f2..63250473b 100644
--- a/cli/js/format_error.ts
+++ b/cli/js/format_error.ts
@@ -1,4 +1,5 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { DiagnosticItem } from "./diagnostics.ts";
 import * as dispatch from "./dispatch.ts";
 import { sendSync } from "./dispatch_json.ts";
 
@@ -7,3 +8,11 @@ export function formatError(errString: string): string {
   const res = sendSync(dispatch.OP_FORMAT_ERROR, { error: errString });
   return res.error;
 }
+
+/**
+ * Format an array of diagnostic items and return them as a single string.
+ * @param items An array of diagnostic items to format
+ */
+export function formatDiagnostics(items: DiagnosticItem[]): string {
+  return sendSync(dispatch.OP_FORMAT_DIAGNOSTIC, { items });
+}